MP 700 Series GPS modem 2.0

Transcripción

MP 700 Series GPS modem
Software Installation,
Configuration, and Integration
Guide
2130346
Rev 2.0
Preface
Important Notice
Due to the nature of wireless communications, transmission
and reception of data can never be guaranteed. Data may be
delayed, corrupted (i.e., have errors) or be totally lost.
Although significant delays or losses of data are rare when
wireless devices such as the Sierra Wireless modem are used in
a normal manner with a well-constructed network, the Sierra
Wireless modem should not be used in situations where failure
to transmit or receive data could result in damage of any kind
to the user or any other party, including but not limited to
personal injury, death, or loss of property. Sierra Wireless,
accepts no responsibility for damages of any kind resulting
from delays or errors in data transmitted or received using the
Sierra Wireless modem, or for failure of the Sierra Wireless
modem to transmit or receive such data.
If you have purchased this product under a United States
Government contract, it shall be subject to restrictions as set
forth in subparagraph (c)(1)(ii) of Defense Federal Acquisitions
Regulations (DFARs) Section 252.227-7013 for Department of
Defense contracts, and as set forth in Federal Acquisitions
Regulations (FARs) Section 52.227-19 for civilian agency
contracts or any successor regulations. If further government
regulations apply, it is your responsibility to ensure
compliance with such regulations.
Safety and Hazards
Do not operate the Sierra Wireless modem in areas where
blasting is in progress, where explosive atmospheres may be
present, near medical equipment, near life support equipment,
or near any equipment which may be susceptible to any form
of radio interference. In such areas, the Sierra Wireless modem
MUST BE POWERED OFF. The Sierra Wireless modem can
transmit signals that could interfere with this equipment.
Do not operate the Sierra Wireless modem in any aircraft,
whether the aircraft is on the ground or in flight. In aircraft, the
Sierra Wireless modem MUST BE POWERED OFF. When
operating, the Sierra Wireless modem can transmit signals that
could interfere with various onboard systems.
Note: Some airlines may permit the use of cellular phones while the
aircraft is on the ground and the door is open. Sierra Wireless
modems may be used at this time.
The driver or operator of any vehicle should not operate a
computer or any other device connected to the Sierra Wireless
modem while in control of a vehicle. Doing so will detract
Rev 2.0 Oct.04
1
MP 700 Series GPS Software Installation, Configuration, and Integration Guide
from the driver or operator's control and operation of that
vehicle. In some states and provinces, operating such communications devices while in control of a vehicle is an offence.
Limitation of
Liability
The information in this manual is subject to change without
notice and does not represent a commitment on the part of
Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL
DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL,
CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES
INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS OR
REVENUE OR ANTICIPATED PROFITS OR REVENUE
ARISING OUT OF THE USE OR INABILITY TO USE ANY
SIERRA WIRELESS PRODUCT, EVEN IF SIERRA WIRELESS
AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES OR THEY ARE
FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra
Wireless, and/or its affiliates aggregate liability arising under
or in connection with the Sierra Wireless product, regardless of
the number of events, occurrences, or claims giving rise to
liability, be in excess of the price paid by the purchaser for the
Sierra Wireless product.
Patents
Portions of this product are covered by some or all of the
following US patents:
5,515,013
5,617,106
5,629,960
5,682,602
5,748,449
5,845,216
5,847,553
5,878,234
5,890,057
5,929,815
6,169,884
6,191,741
6,199,168
6,327,154
6,339,405
6,359,591
6,400,336
6,643,501
6,516,204
6,561,851
6,653,979
6,697,030
6,712,627, 6.785,830
D367,062
D372,248
D372,701
D416,857
D442,170
D452,495
D452,496
D453,733
D459,303
D496,642
D496,655
and other patents pending.
Manufactured or sold by Sierra Wireless or its licensees under
one or more patents licensed from InterDigital Group.
Copyright
© 2004 Sierra Wireless. All rights reserved.
Trademarks
“Heart of the Wireless Machine®” is a registered trademark of
Sierra Wireless.
Sierra Wireless™, the Sierra Wireless logo, the red wave
design, and Watcher™ are trademarks of Sierra Wireless.
Windows® is a registered trademark of Microsoft Corporation.
2
2130346
Preface
Trimble® is a registered trademark of Trimble Navigation
Limited.
Lassen™ is a trademark of Trimble Navigation Limited.
InstallShield® is a registered trademark and service mark of
InstallShield Software Corporation.
Other trademarks are the property of the respective owners.
Contact
Information
Sales Desk:
Phone: 1-604-232-1488
Hours: 8:00am to 5:00pm Pacific Time
e-mail: [email protected]
Post: Sierra Wireless, Inc.
13811 Wireless Way,
Richmond, BC
Canada V6V 3A4
Fax: 1-604-231-1109
Web: www.sierrawireless.com
Your comments and suggestions on improving this documentation are welcome and appreciated. Please e-mail your
feedback to [email protected]. Thank you.
Consult our website for up-to-date product descriptions,
documentation, application notes, firmware upgrades, troubleshooting tips, and press releases:
www.sierrawireless.com
Rev 2.0 Oct.04
3
4
2130346
Table of Contents
Introducing the MP 700 Series GPS modem . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Voice support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Provided software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
About GSM, GPRS, and EDGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GSM accounts and coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supported GSM radio frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connection types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
11
12
12
Serial or USB PC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installing Watcher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installing the modem driver (Windows NT only) . . . . . . . . . . . . . . . . . . . . . . . 17
Account Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
The SIM card and account information . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Inserting the SIM card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Setting up connection profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Configuring a profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Default profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Operating the MP 700 Series GPS modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Modem hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turning the modem on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading the status indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resetting the modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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23
23
24
25
5
Watcher software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Watcher help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Launching Watcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Watcher window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
26
26
26
Using the Modem as a Mobile Phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Connecting voice devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Making voice calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Configuring the Operating Mode and Fallback Feature . . . . . . . . . . . . . . . . .29
Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial PC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB PC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Autoconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29
30
30
30
Fallback feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Configuring the Modem to Report GPS and I/O Data . . . . . . . . . . . . . . . . . . .33
6
GPS configuration and reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPS protocols and commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPS configuration using AT commands . . . . . . . . . . . . . . . . . . . . . . . . . .
GPS configuration in Watcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPS display in Watcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPS TAIP quick reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
34
34
37
37
37
I/O device installation and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Port specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital output devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O configuration using AT commands . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O configuration in Watcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog input setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital I/O setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38
38
39
39
40
41
41
44
44
45
2130346
Contents
Sending Data to your Network Application . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Configuring the modem to route data to a server . . . . . . . . . . . . . . . . . . . . . .
Report frequency timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MTP configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The problem created by Network Address Translation (NAT) . . . . . . . .
Solutions to the NAT problem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47
47
50
51
52
Retrieving the Unique Mobile Device ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Using the Monitoring and Tracking Protocol . . . . . . . . . . . . . . . . . . . . . . . . . .55
The RNAP protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Packet layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Multiplexing layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
The MTP protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MTP message types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary/registration message frequency . . . . . . . . . . . . . . . . . . . . . . . .
TAIP commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alarm acknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
57
57
64
64
65
Support and Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
RF and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Weight and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
GPS performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
I/O port characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Rev 2.0 Oct.04
7
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
European Union. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Declaration of Conformity for CE Marking . . . . . . . . . . . . . . . . . . . . . . . . . 73
Canada (Industry Canada approval) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
U.S.A. (FCC approval). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8
2130346
1: Introducing the
1
• Provided software
• About GSM, GPRS,
and EDGE
• Serial or USB PC
connection
• Documentation
Note: Do not connect the
MP 700 Series GPS to a USB
port on a PC before installing the
software. See Chapter 2.
The Sierra Wireless MP 700 Series GPS modem provides a
wireless network connection for portable computers installed
in vehicles. The modem has a rugged design that withstands
the vibration, shock, humidity, and extremes of temperature
experienced in the normal operation of police, emergency,
utility, and field service vehicles.
The network connection provided by the MP 700 Series GPS
can be used to access shared data, browse the Internet, and
send and receive e-mail and text messages. The modem also
allows for sensors, gauges, and alarms (such as panic buttons)
to be deployed in vehicles and remotely monitored from a
central location or dispatch. A built-in GPS module provides
location and heading data that can also be remotely monitored.
Voice support
Depending on your service provider, the MP 700 Series GPS
may be voice-enabled. If so, you can attach a headset to your
modem and use it as a mobile phone.
Rev 2.0 Oct.04
9
Provided software
The MP 700 Series GPS modem comes with this software:
•
Watcher, the enabling software for the modem that
manages and monitors your connections.
•
The driver that forms the interface between the modem
and your Windows operating system.
•
The firmware that is stored in non-volatile memory.
The MP 700 Series GPS has an embedded AirCard wireless
network card (also made by Sierra Wireless). There are two
firmware programs on the MP 700 Series GPS—one stored on
the controller board of the modem, and one on the AirCard.
The firmware was loaded into the AirCard and controller
board when the modem was assembled. As new versions of
the software and firmware are released, they are posted to the
Sierra Wireless web site, www.sierrawireless.com.
About GSM, GPRS, and EDGE
The MP 700 Series GPS operates on GSM network technology.
GSM (Global System for Mobile communications) is a type of
wireless communications network designed for mobile phones
that is widely deployed throughout the world. GPRS (General
Packet Radio Service) and EDGE (Enhanced Data GSM
Environment) are add-on data services to GSM networks.
GPRS provides a maximum data transmission speed of
56 kbps while EDGE provides a maximum data transmission
speed of 216 kbps. The MP 750 GPS supports GPRS while the
MP 775 GPS supports GPRS and EDGE service.
GPRS service has been implemented on most GSM networks
but there are a few areas (mainly rural areas in Europe) with
GSM coverage but no GPRS service. EDGE is less widely
implemented. The MP 700 Series GPS modem is primarily
designed to provide GPRS/EDGE data connections but it also
allows for CSD (Circuit-Switched Data) connections in areas
that have GSM coverage but no GPRS or EDGE service
(assuming CSD is supported by your service provider).
10
2130346
Introducing the MP 700 Series GPS modem
GPS Satellite
GSM/GPS
Antenna
MP 775 GPS
MP 700 Series GPS installed in a vehicle with laptop computer.
Base Station (GSM)
GSM
Network Operations Center
Private/Dedicated Link
Customer Fixed End System
Figure 1-1: The MP 700 Series GPS modem and the GSM and GPS
networks.
GSM accounts and coverage
You must set up an account with a GSM service provider (that
offers GPRS/EDGE service) for each
MP 700 Series GPS modem you install. After installing the
MP 700 Series GPS modem software, you must configure it to
use an account. (See “Account Configuration” on page 19.)
The service provider supplies a SIM (Subscriber Identity
Module) card—sometimes called a “smart card” or “smart
chip”—for each account. The SIM card provides the
MP 700 Series GPS modem’s identity on the GSM network. It
contains account information and must be inserted in the
MP 700 Series GPS modem for the modem to operate. (See
“Inserting the SIM card” on page 19.)
Rev 2.0 Oct.04
11
The ability of the MP 700 Series GPS modem to obtain GSM
and GPRS/EDGE service in any area is determined by several
factors:
Network proximity and GPRS/EDGE availability To
obtain GSM service, you must be within the coverage area of a
GSM network operating in one of the radio frequency bands
supported by the MP 700 Series GPS modem. (See “Supported
GSM radio frequencies” on page 12.)
GPRS has been implemented on most GSM networks, except
in a few rural areas in Europe. (EDGE is less ubiquitous.) In
areas which have do not have GPRS/EDGE service, you may
be able to make circuit-switched data (CSD) connections and
voice calls (if supported by your service provider), but you will
not be able to make high-speed, packet-data connections.
Roaming If you are within the coverage area of a GSM
network operated by a service provider other than your own,
your ability to obtain service depends on whether a roaming
agreement exists between your service provider and the one
operating your current local network. There may be additional
fees for roaming service. Contact your reseller or service
provider for information.
Account provisions Your account may restrict usage of
certain networks, may prevent voice communications, or may
limit your connection time or data transmission.
Supported GSM radio frequencies
Every GSM network operates on one of these sets of radio
frequency bands:
•
850 MHz band—used by some North American service
providers
•
900 MHz band—used by some European service
providers
•
1800 MHz band—used by some European and Asian
service providers
•
1900 MHz band—(also called the PCS band) used by
many North American service providers
The MP 750 GPS is a tri-band product operating on the 900,
1800, and 1900 MHz bands. The MP 775 GPS is a quad-band
product operating on the 850, 900, 1800, and 1900 MHz bands.
Connection types
The MP 700 Series GPS modem supports three types of
connections.
12
2130346
Introducing the MP 700 Series GPS modem
Packet data connections When using GPRS/EDGE, the
MP 700 Series GPS modem makes a high-speed, packet-based
wireless connection using standard Internet data protocols.
Packet data connections require GPRS/EDGE service. GPRS
provides a maximum data transmission speed of 56 kbps while
EDGE provides a maximum data transmission speed of
216 kbps.
Circuit-switched data (CSD) connections Circuitswitched connections can be established in areas that have
GSM but not GPRS/EDGE coverage. The Fallback feature must
be properly configured to allow for this. (See page 31.) In a
circuit-switched connection, the modem connects to a specific
phone number. The maximum data rate in this type of
connection is 14.4 kbps.
Voice connections Depending on your service provider,
your MP 700 Series GPS may be voice-enabled. If so, you can
attach a headset to your modem and use it as a mobile phone.
You require a headset or other audio device with a 4-wire,
2.5 mm connector connected to the Audio connector on the
modem.
Serial or USB PC connection
The MP 700 Series GPS can be connected to either a serial
(DB9) or USB port on a PC. When connected to a serial port,
the MP 700 Series GPS behaves like a dial-up modem. When
connected to a USB port, the MP 700 Series GPS behaves more
like a network card. With a USB PC connection, the modem
connects instantly to the network on startup, unless the
operating mode is set to On Demand. (The operating modes
are covered in Chapter 4, beginning on page 23.) With a USB
PC connection, and the operating mode set to Always On, it is
not necessary to run Watcher to make connections.
Depending on how you are using the MP 700 Series GPS, you
may want to have both a USB and serial connection between
the modem and the host. This allows you, for example, to
make a network connection over the USB connection, while
using a “moving map” application over the serial connection.
To do this, you must configure the modem to send GPS data to
the serial port using the AT command, AT!MPGPSCOMOUT.
(See the AT Command Reference, document number 2130309,
for more details.)
If you intend to use the modem in this way, you must install
the modem using the USB option. (See page 15.) If you install
the modem using the serial option and then connect a USB
cable, the modem will not function.
Rev 2.0 Oct.04
13
Documentation
The MP 700 Series GPS modem documentation consists of
two guides and an online help system.
The MP 700 Series GPS Software Installation, Configuration, and
Integration Guide (this document) describes how to:
•
Install the software.
•
Configure the software to use a GSM account and SIM
(Subscriber Identity Module) card.
•
Understand the LEDs on the modem and the indicators in
the Watcher software.
•
Set up the modem’s operating mode and configure the
feature that allows for CSD connections.
•
Configure the modem to report GPS and/or I/O (input/
output) data (from sensors, gauges, or panic buttons).
•
Use the modem to connect to a VPN (Virtual Private
Network).
•
Collect and use GPS and I/O data from a fleet of vehicles
in which MP 700 Series GPS modems are installed.
The MP 700 Series GPS modem Vehicle Installation Guide
provides instructions on installing the hardware, describing
how to:
•
Mount the modem in a vehicle.
•
Connect to the vehicle’s battery.
•
Connect to the vehicle’s ignition switch or a separate on/
off switch.
•
Ground the device.
•
Connect the radio and GPS antennas.
•
Connect a headset, a notebook computer, and other I/O
(input/output) devices.
The Software Installation, Configuration, and Integration Guide
and the Vehicle Installation Guide are provided as PDF
(Portable Document Format) files on the installation CD.
Online help is provided with Watcher. The help describes all
the icons and indicators in Watcher, provides detailed instructions on using Watcher to make voice and data connections,
and explains how to send and receive SMS messages. When
using Watcher, you can access help through the menu system
or by pressing the <F1> key.
14
2130346
2: Software Installation
• System requirements
• Installing Watcher
2
Before you can use the MP 700 Series GPS, you must install
Watcher and the modem driver. This section guides you
through the installation.
System requirements
Note: Do not connect the
MP 700 Series GPS to a USB
port on a PC before installing the
software.
Note: Windows NT 4.0 is
supported only on the
MP 750 GPS; it is not supported
on the MP 775 GPS.
The Watcher software supports notebook computers with
these operating systems (using either a serial or USB PC
connection):
•
Windows 2000 Professional (with Service Pack 4 or later)
•
Windows XP Professional
These operating systems are also supported but require a serial
connection between the modem and PC:
•
Microsoft® Windows® 98 SE
•
Windows NT 4.0 (with Service Pack 6a)
Table 2-1: System resource requirements
Interface
Available DB9 serial or USB port
Drive
CD-ROM drive (installation only)
Memory
32 MB RAM
Installing Watcher
Note: On Windows NT, 2000,
and XP, you must be logged in
with administrative privileges to
install the software. (Windows
NT is only supported on the
AirCard 750.)
Follow these steps to install Watcher and the modem driver:
1.
Close any Windows programs that are open on your
computer.
2.
Insert the MP 700 Series GPS modem CD in your CD-ROM
drive.
The CD should automatically launch and display a menu.
If not, select Start > Run from the Windows taskbar and
type d:\launch.exe (where d is the drive letter of your CDROM drive).
3.
Rev 2.0 Oct.04
From the CD start-up menu, select installation and
documentation and then MP Watcher installation to launch the
InstallShield® Wizard.
15
Note: If you want to have both a
USB and serial connection to the
modem, install the modem using
the USB option. See page 13.
4.
· If you have multiple COM ports, the wizard prompts
you to select one. Use the check boxes to select the port
to which you are connecting the modem. (If you are
connecting the modem to a USB connector on the PC,
your selection here has no effect.)
Note: Once the modem is
installed, if you chose to switch
connections (from serial to USB,
or from USB to serial), you must
rerun the installer.
Note: The final window of the
wizard may be slow to appear as
the driver installation occurs.
Use the Next and Back buttons to navigate through the
wizard.
· If you are running Windows 2000 or XP, you are
prompted to configure Watcher for either the “MP Series
Modem (Serial)” or “MP Series Network Adapter (USB)”
driver. (If you are running Windows 98 or NT, you only
have the serial option.) If you are connecting the modem
to a DB9 serial connector on the PC, select the first
option. If you are connecting the modem to the USB
connector on the PC, select the second option.
5.
If the Digital Signature Not Found (Windows 2000) or
Software Installation (Windows XP) window appears, you
can safely ignore the warning. Click Yes or Continue Anyway
when it appears.
6.
If you are installing the USB driver, you are prompted to
connect the modem. Connect the modem and click OK.
7.
Click Finish in the final window. To close the CD start-up
menu, select the taskbar button to redisplay the window,
then select exit in the lower right corner of the window.
8.
If you are running Windows XP, the Found New
Hardware Wizard appears. Click Next. If the Hardware
Installation window appears again, click Continue Anyway.
Click Finish on the final window of the wizard.
9.
If you are running Windows NT, a window appears
informing you that you must install the
“Sierra Wireless MP Series Modem” prior to using
Watcher. Click OK. (The modem driver installation is
covered in the next section.)
10. If you are installing the serial driver, connect the modem to
your PC. Windows then completes driver installation. If
you are running Windows 98, 2000, or XP, you can proceed
to the next chapter (page 19) for instructions on configuring your account. If you are running Windows NT,
proceed to the next section.
16
2130346
Software Installation
Note: Windows NT is only
supported on the MP 750 GPS.
Installing the modem driver
(Windows NT only)
Note: The Windows NT CD and the Service Pack 6a CD are required
to complete the installation.
Before installing the software ensure that Windows Networking and
RAS (Remote Access Services) are installed. (See the Windows NT
online help for procedures.)
1.
2.
If you have not yet done so, connect the MP 700 Series GPS
to your PC.
From the Windows taskbar, choose Start > Settings >
Control Panel.
3.
Double-click the Modems icon. If the Install New Modem
wizard launches, proceed to the next step. Otherwise, click
Add to launch the wizard.
4.
Select Don’t detect my modem, I will select it from a list and click
Next.
5.
From the Manufacturers list in the left column, choose
Sierra Wireless Inc. (not Sierra Wireless).
6.
From the Models list in the right column, choose Sierra
Wireless MP Series Modem and click Next.
7.
Click the Selected Ports radio button and select the COM
port to which the modem is attached (usually COM 1), then
click Next.
8.
Click Finish.
9.
If the Modems Properties window is not already open,
double-click the Modems icon to open it.
10. Select Sierra Wireless MP Series Modem and click the
Properties button.
11. In the Maximum speed drop-down list, select 115200 if it is
not already selected. Click OK.
12. Click Close to close the Modems Properties window.
13. Reinstall Service Pack 6a.
Rev 2.0 Oct.04
17
18
2130346
3: Account Configuration
• Inserting the SIM card
• Setting up connection
profiles
• Default profile
3
Once the Watcher software is installed (as described in the
previous chapter), you must configure the
MP 700 Series GPS modem with an account before it is ready
for use.
The SIM card and account information
You require an account with a GSM service provider for each
MP 700 Series GPS being deployed. For each account, you
should also obtain a SIM card. The SIM contains account information used by the network to identify subscribers and
provide access to the appropriate messages and services. The
SIM must be inserted in the modem’s SIM slot (as described in
the next section.)
Your service provider may give you only one APN in which
case you require only one profile. Some service providers
assign separate APNs for separate purposes. For example,
some service providers supply one APN to use for Internet
browsing and a different APN to use with a VPN. In this case
you must set up multiple profiles. The MP 700 Series GPS
allows for up to three profiles.
Most service providers have one or two standard profiles that
all or most of their subscribers are expected to use. Most of
these standard profiles have been pre-defined in Watcher,
allowing you to select a standard profile, rather than creating it
manually. To manually set up an account, you require the
necessary information from your service provider: username,
password, and APN (Access Point Name).
Inserting the SIM card
The MP 700 Series GPS modem has a SIM card slot next to the
lights on the indicator panel. The slot is protected by a
removable rubber cover, and houses a SIM card sled. To insert
a SIM card into the modem:
Rev 2.0 Oct.04
1.
Open the rubber cover.
2.
Use a pen or stylus to press the yellow eject button inside
the slot.
19
Figure 3-1: Opening the SIM card cover and ejecting the carrier.
3.
Pull the sled out of the slot.
4.
Place the SIM card into the sled until it clicks into place.
The SIM card should fit in only one way, with the contact
surfaces facing up as shown.
Figure 3-2: Placing a SIM card into the sled.
5.
Insert the sled back into the SIM slot.
Figure 3-3: Inserting the SIM card carrier and closing the cover.
6.
Push the sled in until it clicks into place in the slot.
Close the rubber cover again, by fitting in the left edge, then
pressing in to seal the cover, as shown.
20
2130346
Account Configuration
Setting up connection profiles
Note: Your profiles are stored on
your MP 700 Series GPS
modem—not on the SIM card.
This means that if you use your
SIM card in another device, you
must create a profile on that
device.
Unless your MP 700 Series GPS modem was preconfigured by
your reseller or service provider, you must set up at least one
connection profile before you can use it to access the Internet.
Some service providers offer a single profile. Some offer
separate profiles for separate purposes (for example: one for
web browsing and one to use while accessing a corporate
network over a VPN). You may also require different profiles
for different types of data connections, or if you have multiple
SIMs. The MP 700 Series GPS modem allows you to create up
to three profiles.
Configuring a profile
Note: If the version of firmware
on your modem is not current
with your version of
MP750 Watcher, you will be
prompted to update your
firmware when you launch the
program. This update is
important to ensure proper
operation of your modem. The
update may take as long as
fifteen minutes.
To create a profile:
1.
Ensure that the SIM card is inserted into the card slot (see
“Inserting the SIM card” on page 19).
2.
If Watcher is not running, start Watcher by
choosing Start > Programs > Sierra Wireless >
MP 700 Series > MP 700 Series GPS Watcher, or
double click the desktop shortcut.
3.
Select TOOLS > Connections. The Connections
window appears, showing you the currently configured
profiles.
If a profile is listed, your modem is likely preconfigured
and is ready for use—you may choose Cancel and proceed
to “Configuring the Modem to Report GPS and I/O Data”
on page 33 or “Operating the MP 700 Series GPS modem”
on page 23. (If you wish to examine the existing profile,
highlight the profile and click the Edit button.)
4.
In the Connections window, click Add to create a new
profile. The User Profile window appears.
5.
Either select a pre-defined profile from the Profile Name
field, or enter your profile information as follows:
· Profile Name: Enter a description of the profile or
account. This name appears in the main Watcher
window and, if you later create more profiles, you can
use it to select this profile.
· User Name and Password: Enter your user name and/or
password if assigned by your service provider.
· APN (Access Point Name): Enter the APN that the
service provider gave you, if any.
When you have finished configuring the profile, click OK.
Rev 2.0 Oct.04
21
Default profile
Note: The Fallback connection
is only invoked when a
connection is established using
the default profile. See page 31.
22
The default connection profile is the one used to establish a
wireless data connection if you do not select a specific profile
before you click Watcher’s Connect button. If you only have one
profile, it is the default. If you create more than one profile,
you can set the default in the Connections window:
1.
In Watcher, choose TOOLS > Connections. The Connections
window appears.
2.
On the Profiles tab, select the appropriate box in the
Default Connection column, then click OK.
2130346
4: Operating the
• Modem hardware
• Watcher software
4
Operating the MP 700 Series GPS modem requires some
knowledge of both the modem hardware and the Watcher
software. This chapter describes the basics of each.
Modem hardware
The MP 700 Series GPS modem is usually mounted in the
trunk or passenger compartment of a vehicle.
Turning the modem on and off
The way in which the MP 700 Series GPS is wired determines
how it is powered on and off. In most cases the power supply
for the modem is the vehicle's electrical system and the modem
is powered on and off in one of these ways (see the
MP 700 Series GPS modem Vehicle Installation Guide—document
number 2130286—for details):
•
Accessory on. The modem is powered when the ignition is
switched to "Accessories". (This allows the modem to be
powered when the engine is off.)
—or—
•
Engine on. The modem is powered only when the ignition
is on. (The modem is only on when the engine is on.)
—or—
•
Separately switched. The modem is connected to a
separate on/off switch so that it can be turned on and off
independently of the engine and vehicle accessories.
Rather than cutting power to the modem, the ignition key or
power switch allows the modem to perform a controlled
shutdown sequence that avoids data loss. (You can also set the
modem to wait up to 240 minutes after the power switch has
been turned off before it shuts down. See the description of the
Power Off Timer in the Watcher online help for details.)
Rev 2.0 Oct.04
23
Reading the status indicators
The MP 700 Series GPS modem’s indicator panel includes four
indicator lights and the SIM card slot:
Power indicator
SIM card slot
Receive (Rx)
indicator
GPS indicator
Transmit (Tx) indicator
Figure 4-1: The indicator panel of the MP 700 Series GPS modem.
The table below shows the behavior of the LEDs during
normal modem operation:
Table 4-1: LED operation
LED
Power
24
Behavior
Indicates
Off
Modem is not powered.
Rapid flashing
Modem is powered and has not acquired GSM or
GPRS/EDGE service.
Slow flashing (about 1.5 seconds
between flashes)
Modem has acquired GSM service but not
GPRS/EDGE service.
On solid
Modem has acquired GPRS/EDGE service.
Tx
Flashing
Modem is transmitting data.
Rx
Flashing
Modem is receiving data.
GPS
Off
GPS module is not active.
Flashing
GPS module is active but not receiving valid
fixes.
On solid
GPS module is active and providing valid fixes.
2130346
Operating the MP 700 Series GPS modem
Resetting the modem
The reset button for the MP 700 Series GPS modem is on the
top of the housing.
To reset the modem, press hard on
the button until all four indicator
lights illuminate. (Use a thin, blunt
tool such as a stylus or capped
pen; avoid sharp implements that
might puncture the rubber.)
This terminates any data
connection and causes the modem
to perform a self-test. (Stored
settings are not lost.)
Figure 4-2: The modem reset button.
Watcher software
Watcher is the program used to manage and monitor the
MP 700 Series GPS modem. For information about installing
Watcher and setting up a connection profile, see “Software
Installation” on page 15 and “Account Configuration” on
page 19.
Watcher allows you to:
Note: Dependent on the
operating mode, it may not be
necessary to run Watcher to use
the modem, but it is useful to do
so because Watcher provides
useful status information as well
as providing the ability to
configure certain options.
Rev 2.0 Oct.04
•
Create and edit connection profiles.
•
Determine signal strength, roaming status, GPRS/EDGE
availability, and other network connection parameters.
•
Monitor the status of the MP 700 Series GPS modem and
of GSM service.
•
Initiate data connections.
•
Make and receive phone calls (if voice is enabled).
•
Send and receive SMS messages.
•
Enable or disable SIM security that prevents others from
using your SIM card if it is lost or stolen.
•
Set Watcher notification options.
•
Configure the I/O ports.
•
View GPS position information.
25
Watcher help
Watcher has a well-indexed and detailed online help system.
To get help in Watcher, select HELP > Help Topics. You can also
display help by pressing the <F1> key on your computer.
Launching Watcher
To launch Watcher:
1.
Ensure that the SIM card is inserted into the card slot (see
“Inserting the SIM card” on page 19).
2.
If Watcher is not running, start Watcher by
choosing Start > Programs > Sierra Wireless>
MP 700 Series > MP 700 Series GPS Watcher, or
double click the desktop shortcut.
Watcher window
Watcher indicators
The main Watcher window includes a number of elements that
let you control and monitor your MP 700 Series GPS modem
and your connection to the GSM network.
Signal strength
GPRS
EDGE
Roaming
HELP menu
TOOLS menu
VIEW menu
Title bar
Compact view
Minimize
Close Watcher
SMS message
DATA tab
Headset
VOICE tab (when
enabled)
Incoming call
Missed call
Call forwarding
Edit connection
profile button
Voice mail
Power off timer
GPS
Transmit / Receive
Status area
Connect/Disconnect
button
Connection profile
drop-down list
Figure 4-3: The Watcher window, showing the DATA tab controls.
26
2130346
5: Using the Modem as a Mobile
Phone
• Connecting voice
devices
• Making voice calls
5
Depending on your service provider, your MP 700 Series GPS
may be voice-enabled. If so, you can attach a headset to your
modem and use it as a mobile phone.
Connecting voice devices
To use the modem for voice communications, connect a 4-wire
headset with a 2.5 mm connector to the modem’s Audio
connector. (If the modem is installed in the trunk of the vehicle,
it will be necessary to install an extension cable between the
headset and the modem. Contact your service provider for
information about supported cables.)
Figure 5-1: The MP 700 Series GPS modem’s Audio connector.
Making voice calls
When the voice features are enabled in Watcher, the main
window has a VOICE tab that functions like the keypad on a
mobile phone (see page 26). For more details, see the Watcher
online help.
Rev 2.0 Oct.04
27
28
2130346
6: Configuring the Operating
Mode and Fallback Feature
• Operating modes
• Fallback feature
6
Operating modes
The modem has two operating modes: Always On and On
Demand. To understand the operating modes for the modem, it
is necessary to understand the MP connection from end to end:
Fallback GSM Connection
Host-to-modem connection
Modem-to-network connection
Figure 6-1: Modem connections.
There are two modem connections: the host-to-modem
connection and the modem-to-network connection.
•
Host-to-modem—This is the connection between the PC
on which Watcher is installed and the MP 700 Series GPS.
Your PC connection (serial or USB) and your Autoconnect
setting determine how this is established.
•
Modem-to-network—This is the connection between the
MP 700 Series GPS and the network.
The operating mode determines how the modem-to-network
connection is established. In Always On mode, the modem-tonetwork connection is established whenever the modem is
powered and GPRS/EDGE service is available. In On Demand
mode, the modem-to-network connection is established only
when the host-to-modem connection is also established.
If you are developing a network application to control or
monitor MP 700 Series GPS modems installed in a fleet of
vehicles, it is usually best to use Always On mode. (With On
Demand mode, it can be difficult to track the modems’ IP
addresses.)
Rev 2.0 Oct.04
29
Serial PC connections
With a serial connection, the host-to-modem connection is established by selecting the Connect button in Watcher, or if
Autoconnect is enabled, the connection is automatically established when Watcher is launched. The modem-to-network
connection is established based on the operating mode as
described above.
USB PC connections
If the modem is connected to a USB port on the PC, the host-tomodem connection is established automatically when the
modem and the PC are powered. It isn’t necessary to launch
Watcher to establish the connection. There is little difference
between Always On and On Demand mode with a USB
connection, because the host-to-modem connection is established immediately on startup.
To access the Operating Mode field, from the main Watcher
window, select TOOLS > Connections and select the Network tab.
Autoconnect
Note: The Autoconnect check
box is only available if the
modem is connected to the serial
port on the PC. (With a USB
connection, Autoconnect is
effectively always enabled.)
The Autoconnect feature controls whether the host-to-modem
connection is automatically established. When the feature is
enabled, the connection is established automatically when:
•
Watcher is launched
•
GPRS/EDGE service is re-acquired after it has been lost
When Autoconnect is enabled, a connection is maintained, as
long as Watcher is running and there is GPRS/EDGE service,
until you select the Disconnect button.
To access the Autoconnect field, from the main Watcher
window, select TOOLS > Options and select the Data tab.
30
2130346
Configuring the Operating Mode and Fallback Feature
Fallback feature
Note: Only the default profile
uses the fallback number—if you
select another profile from
Watcher’s pull-down menu (see
page 22) before attempting to
connect, the connection will fail if
no GPRS/EDGE service is
available.
The Fallback feature allows you to configure the modem to
attempt a dial-up connection (over the GSM network) when
GPRS/EDGE service is lost.
In North America and in highly-popluated areas of Europe,
GPRS/EDGE service is available throughout the GSM coverage
area and there is little need for the Fallback feature. In less
densely-populated, rural areas of Europe, there are areas
where there is GSM coverage but no GPRS/EDGE coverage. In
these areas, the Fallback feature can be useful.
When the Fallback feature is configured and enabled, the
modem attempts a dial-up connection in these circumstances
(if GPRS/EDGE service is not available):
Note: If a user establishes a
modem-to-GPRS connection by
selecting Connect, and the user
travels outside of GPRS/EDGE
coverage, the connection is
terminated. This does not invoke
the Fallback feature. The user
would need to select the
Connect button to establish the
dial-up connection.
•
The user selects the Connect button in Watcher
•
The modem requires a connection to make an automatic
report.
Fallback connections are billed as CSD (circuit-switched data)
connections. (Contact your service provider for details.) If the
Fallback feature is invoked by an automatic report, the
connection will be terminated when the inactivity timer
expires.
Regardless of whether the Fallback feature is invoked, the
modem’s IP address is lost anytime the modem-to-network
connection is lost. Many Internet applications stop running
when the IP address is lost.
Watcher does not display a message when the Fallback feature
is invoked, but the GPRS indicator will turn off.
The online help in Watcher provides complete instructions on
configuring and using this feature.
Rev 2.0 Oct.04
31
32
2130346
7: Configuring the Modem to
Report GPS and I/O Data
• GPS configuration and
reporting
• I/O device installation
and configuration
7
The MP 700 Series GPS modem is capable of reporting position
and heading information (using the embedded GPS module)
as well as reporting the status of sensors, gauges, and alarms
connected to the modem’s I/O port. The MP 700 Series GPS is
typically installed in a fleet of vehicles with the GPS and/or I/O
data being sent to a central office or dispatch location for
processing.
This chapter describes how to implement local reporting of
GPS and I/O data. Chapter 8 describes how to configure your
modem to exchange data with your private network. Chapter 9
describes the protocols used to report the GPS and I/O data so
that you can develop or configure a centralized system to
convert the raw data into meaningful information.
GPS configuration and
reporting
GPS receivers use an array of orbiting satellites operated by the
United States Department of Defense to triangulate their
coordinates on the earth’s surface. In order to use the GPS
module in the MP 700 Series GPS, a GPS antenna must be
connected to the modem. (The installation requires either two
antennas—one GSM and one GPS—or a single combination
GSM/GPS antenna.)
For more information about GPS, see the Primer on GPS Operations (document number 2130313) on the Sierra Wireless web
site, www.sierrawireless.com. The Vehicle Installation Guide on
the installation CD (document number 2130286) provides
information about installing the components required to
support GPS.
Rev 2.0 Oct.04
33
GPS protocols and commands
Note: The “MP Rugged Wireless
Modem TAIP Reference”
(document number 2130312)
provides a description of the
TAIP commands that can be
used with the
MP 700 Series GPS modem.
This is available on the Sierra
Wireless web site,
www.sierrawireless.com. Information about the Lassen SQ
GPS modules, including more
documentation on TAIP
commands, is available at
www.trimble.com. When
configured for NMEA, the GPS
module is limited to NMEA GGA
and NMEA VTG messages only.
More information on NMEA
message standards is available
at www.nmea.org.
The GPS module supports two methods of reporting navigational information, using either the TAIP (Trimble ASCII
Interface Protocol) or NMEA (National Marine Electronics
Association) protocols. When the MP 700 Series GPS is
shipped from the factory, the GPS module is configured for
TAIP. If you are using a GPS application that requires data to
be reported according to the NMEA protocol, the modem must
be reconfigured using an AT command. (See the next section.)
NMEA is a reporting protocol only, while TAIP provides the
ability to send commands to the module to query for information and configure reports. When the modem is set for
TAIP, TAIP commands can be sent to the modem in these
ways:
•
Using AT commands. (See the next section.)
•
Using the RNAP and MT protocol (described in Chapter
7).
•
Using Watcher. (See page 37.)
TAIP commands can be used to:
•
Query the modem for its current position, heading, and
speed.
•
Enable and disable automatic reporting of GPS data, and
(if enabled) set the interval at which automatic reports are
sent.
•
Configure the format of the reports.
The MP 700 Series GPS can be configured to store TAIP or
NMEA packets while the modem is out of GSM coverage, and
to forward the packets when coverage is restored. (See
Table 7-1 on page 35.)
GPS configuration using AT commands
The table on the next page lists the AT commands that allow
you to retrieve GPS data from the modem and configure the
GPS module. The MP 700 Series GPS AT Command Reference
(document number 2130309) describes how to establish a
session that allows you to send AT commands to the modem
and provides more details on the commands listed here (as
34
2130346
Configuring the Modem to Report GPS and I/O Data
well as all the other AT commands that work on the
MP 700 Series GPS). The reference is available on the Sierra
Wireless web site, www.sierrawireless.com.
Table 7-1: GPS AT commands
(Parameters are in the <> brackets)
AT command
Description
AT!MPGPSDATA?
Returns a string containing the:
• Status of the GPS LED
• Operational status of the GPS
module
• Latitude
• Longitude
• Altitude
• Speed
• Heading
• Number of satellite fixes
• Age of the data
• UTC time
AT!MPGPSCMD=
<“TAIP
command”>
Sends a TAIP command to the module.
Note that TAIP commands use “>” as the
start delimiter and “<“ as the end
delimiter. For example, to issue the TAIP
command QST (which queries the
operational status of the GPS module),
you would enter:
AT!MPGPSCMD=" >QST<"
AT!MPGPSINIT=
<init no>,
<“TAIP
command”>
Specifies TAIP commands to be included
in initialization strings that are executed
by the modem on start-up . The <init no>
parameter specifies the order in which
the commands are to be executed
(1=first, 5=last).
AT!MPGPSINTSET Sets the interval at which the GPS
=<update interval> module does position and altitude
readings. (This does not control the
interval at which these are reported). The
<update interval> is in seconds (minimum
0, maximum 255).
AT!MPMTCONF=
<engid>, <ctype>,
<destip>,
<destport>,
<lowtmr>,
<fasttmr>,
<gpstmr>
Rev 2.0 Oct.04
Sets the interval at which GPS data is
reported by each of the four reporting
engines. This command is covered in
detail under “MTP configuration” on
page 50.
35
Table 7-1: GPS AT commands
AT command
36
Description
ATI4
Displays the Unique Mobile Device ID.
This number is required to identify each
modem on the network. This is discussed
on page 53.
AT!MPGPSRESET=
[<protocol>]
Resets the GPS module and allows you
to switch between the TAIP and NMEA
protocols:
• AT!MPGPSRESET=0—Sets the
protocol to TAIP.
• AT!MPGPSRESET=1—Sets the
protocol to NMEA.
AT!MPGPSSTOR=
<#GPSrecords>
Enables and disables the storing and
forwarding of GPS records (TAIP or
NMEA) and, when enabled, sets the total
number of records stored.
• AT!MPGPSSTOR=0—Disables the
feature.
• AT!MPGPSSTOR=1-1000—Sets the
total number of records the modem
can accumulate while out of GSM
coverage. (The maximum is 1000.)
When this number is reached, the
modem discards the oldest record as
each new record is captured so that
the stored records are the most
recent.
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GPS configuration in Watcher
In Watcher, you can configure the modem to report velocity
and altitude data in either metric or imperial units. To set the
units, select TOOLS > Configuration > GPS from the main
Watcher window.
When the modem is set for TAIP, the Command field and Send
button on the GPS window allow you to issue TAIP commands
to the GPS module.
GPS display in Watcher
To view latitude, longitude, velocity, heading, altitude, and
local and UTC time1, select TOOLS > Display GPS from the main
Watcher window.
From a cold start (where the modem is powered on with no
stored navigational data), it may take a few minutes for the
GPS module to obtain satellite fixes and begin reporting. The
data is then updated every second.
GPS TAIP quick reference
The following table is a quick summary of the TAIP message
identifiers. For detailed information and message syntax, see
the MP Rugged Wireless Modem TAIP Reference (document
number 2130312) and the Lassen SQ GPS documentation on
TAIP commands available at www.trimble.com.
TAIP Message Identifiers
AL
Altitude/Vertical Velocity
CP
Compact Position Solution
DC
Differential Corrections
DD
Delta Differential Corrections
ID
Identification Number
IP
Initial Position
LN
Long Navigation Message
PV
Position/Velocity Solution
RM
Reporting Mode
RT
Reset
1. UTC is Universal Coordinated Time, the time in Green-
wich, England.
Rev 2.0 Oct.04
37
TAIP Message Identifiers
ST
Status
TM
Time/Date
VR
Version Number
I/O device installation and
configuration
The I/O port on the MP 700 Series GPS modem allows for the
remote monitoring of gauges, sensors, and alarms. This feature
can be used to display readings on instruments or gauges and
to remotely monitor panic buttons or alarms (such as gun rack
alarms that are trigged whenever a gun rack is opened).
This section describes how to connect and configure I/O
devices, such as sensors, gauges, and alarms to work with the
Connecting these devices requires that you make a customized
I/O cable. The cable must have, at one end, whatever connector
is required by the I/O device, and at the other end, the DB15
connector. The cable wires must pin to the appropriate pin
numbers on the I/O connector. The pinouts are described in the
next section.
The maximum length of the I/O cable is 15 feet.
Connector pinouts
The MP 700 Series GPS modem’s I/O port is a female DB15
connector with eight active I/O pins:
•
Two (2) digital I/O ports.
•
Two (2) digital input ports.
•
Four (4) analog input ports.
There are six reserved pins, and one ground pin.
38
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DB15 MALE
1. Reserved—do not connect
3. Digital I/O 1 (Din1/Dout1)
4. Digital input 3 (Din3)
6. Reserved for future support
of differential GPS—do not
connect
7. Analog input 2 (Ain2)
10. Ground (GND)
11. Digital I/O 2 (Din2/Dout2)
12. Digital input 4 (Din4)
Figure 7-1: Pinouts for a male DB15 I/O cable (left) that connects to the
MP 700 Series GPS modem’s female DB15 I/O connector (right). Note that the
two figures’ pinouts are mirror images of one another, since they plug
together.
Port specifications
Note: No more than 36 VDC
should be applied to any I/O
pins.
See “I/O port characteristics” on page 72 for the technical
specifications of the I/O ports, including input voltages.
Digital input devices
Digital input devices are those that have only two states and
send a signal to the modem in one of those states. An example
of a digital input device might be a gun rack alarm that sends a
signal to the modem any time the gun rack is open. Another
example would be a panic button that sends a signal to the
modem when it is pushed.
There are four pins of the DB15 connector to which a digital
input can be connected: Pins 3, 4, 11, and 12. (Pins 3 and 11
could alternatively be used for digital output.)
Rev 2.0 Oct.04
39
Typically a digital input device should be connected between
Ground (Pin 10) and the input port (Pin 3, 4, 11, or 12).
Figure 7-2: A button wired to Pin 4 (digital input) and Pin 10 (Ground).
The pins will report a logic high on an input of 3.3 VDC. An
internal pull-up resistor provides a high condition when the
switch is open.
The digital input pins report a logic low on an input between
0 VDC and 0.8 VDC. Sinking the input pin to ground yields a
logic low (0x00) when the port is polled.
If you configure the modem to send data to a network server,
digital input data can be remotely monitored. (Chapters 6 and
7 explain how to configure the modem and use the data.)
Digital output devices
Note: Digital outputs cannot be
controlled remotely. The
MP 700 Series GPS does not
receive or transmit digital output
data over the network.
Digital output devices are those that have only two states and
the state is controlled by a signal from the modem. Any device
that is to be switched on and off from Watcher would be
installed as a digital output device.
There are two pins of the DB15 connector to which a digital
output can be connected: Pins 3 and 11. (These can be used for
either input or output.)
Typically a digital output device should be connected between
Ground (pin 10) and the output port (Pin 3 or 11).
Figure 7-3: Wiring for using Pin 3 (digital output) as an electronic switch. Pin
10 is Ground.
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The digital I/O ports provide open-collector output to a
maximum of 500 mA.
Analog input devices
Note: Analog input data
CANNOT be sent to a remote
host. The MP 700 Series GPS
does not receive or transmit
analog input data over the
network.
Analog input devices are those that generate a signal of
varying voltage, based on the state of an instrument or gauge.
An example of an analog input device might be a sensor that
detects the vehicle’s speed or fuel volume.
There are four pins of the DB15 connector to which an analog
input can be connected: Pins 7, 8, 14, and 15.
Typically an analog input device should be connected between
Ground (pin 10) and the input port (Pin 7, 8, 14, or 15).
Figure 7-4: A sensor wired to Pin 7 (analog input) and Pin 10 (Ground).
The analog input ports use a 10-bit (1024-step) analog-todigital converter over a range from 0 to 3.3 VDC, yielding a
digital step resolution of 0.0032 V.
I/O configuration using AT commands
Once a sensor, gauge, button, or switch is physically connected
to the MP 700 Series GPS, the modem must be configured to
manage the input from, or output to, the device. This configuration can be done using either AT commands or using
Watcher.
The table below lists the AT commands that allow you to
retrieve I/O data from the modem and configure the I/O ports.
The MP 700 Series GPS AT Command Reference describes how to
establish a session that allows you to send AT commands to
the modem and provides more details on the commands listed
Rev 2.0 Oct.04
41
here (as well as all the other AT commands that work on the
MP 700 Series GPS). The reference is available on the Sierra
Wireless web site, www.sierrawireless.com.
Table 7-2: I/O AT commands
AT command
42
Description
AT!MPAIN?
<chan>,<scale>
Reports the current state of a specified
analog input port. The <chan> parameter
corresponds to a pin number as follows:
• <chan>=1—device on Pin 14
The <scale> parameter specifies whether
a raw or scaled value is reported (0=raw,
1=scaled value). See “Analog input
setup” on page 44 for an explanation of
raw and scaled values.
AT!MPAINCFG=
<chan>,
“<input label>”,
“<unit label>”,
<zero scale>,
<full scale>
Assigns a label, unit label, zero scale,
and full scale to a specified analog input.
See “Analog input setup” on page 44 for
a description of the parameters. The
<chan> corresponds to the pin numbers
as above.
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Table 7-2: I/O AT commands
AT command
AT!MPDIO=
<chan>,<value>
Description
Sets the value at a specified digital output
channel. The <value> parameter sets the
port to logic level low or logic level high
(0=low, 1=high). See “Digital I/O setup”
on page 45 for an explanation of the logic
levels. (The value can only be set for
channels 1 and 3 and only if they are
configured for output.)
AT!MPDIO?<chan> reports the current
value at a specified digital I/O port. The
<chan> parameter corresponds to a pin
number as follows:
AT!MPDIOCFG
<chan>,<type>,
“<IO label>”,
<alarm>,
“<logic low
label>”,
“<logic high
label>”,
[<level>]
Rev 2.0 Oct.04
Assigns a type (input or output), label,
alarm level, logic low level, and logic high
level to a specified digital input or output.
See “Digital I/O setup” on page 45 for a
description of the parameters. The
<chan> corresponds to the pin numbers
as above. (Only channels 1 and 3 can be
configured for output.)
AT!MPDIOCFG?<chan> reports the
configuration of a specified port.
43
I/O configuration in Watcher
There are separate windows in Watcher for configuring the
analog and digital ports.
Analog input setup
The Analog Input window (TOOLS > Configuration > Analog...) is
used to configure devices on the four analog inputs. Each tab
corresponds to a pin:
Analog Tab
Connector Pin
Input 1
14
Input 2
7
Input 3
15
Input 4
8
To configure an analog sensor or gauge, select the tab that
corresponds to the pin you are using, and complete the fields
as follows:
•
Label: Enter a description of the sensor or gauge (Measured
Voltage, Vehicle Speed, etc.), up to 20 characters in length.
•
Raw value: Shows the analog value from the input (readonly). The analog input has a 10-bit (1024-step) resolution,
so the raw value range is between 0 and 1023.
•
Zero scale: Enter the minimum value for the units you are
reporting (used to convert the raw analog value of zero).
•
Full scale: Enter the maximum value for the units you are
reporting (used to convert the raw value of 1023).
•
Current value: Shows the resulting converted value using
the zero and full scales entered.
•
Unit: Specify the units of the input (volts, km/h, etc.), up to
20 characters in length.
Example
If you are measuring the amount of fuel in the tank, and the
gauge you have connected to the I/O connector measures
between 0 (raw value 0) and 20 (raw value 1023) gallons, then
your zero scale is 0.0 and your full scale is 20.0. Your label
could be “Fuel”, and units, “gallons”.
The measurements are calculated for the 20-gallon range
(between 0 and +20), which is divided into 1024 steps
(0.01953 gallons per unit step). A reading of 10 gallons would
therefore show a raw value of 512 (10 gallons/0.0195 gallons
per unit).
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Digital I/O setup
The Digital Input/Output window (TOOLS > Configuration >
Digital...) is used to configure devices on the two digital I/O and
two digital input ports. Each tab corresponds to a pin:
Digital Tab
Connector Pin
I/O 1
Input or output on pin 3
I/O 2
Input or output on pin 11
Input 3
Input on pin 4
Input 4
Input on pin 12
To configure a digital sensor or gauge, select the tab that corresponds to the pin you are using, and complete the fields as
follows:
Note: Logged events are written
to disk as [date] [time]
[Type][Label][Current state],
using the short date and time
formats defined by the operating
system.
•
Label: Provide a description of the sensor or gauge, up to
20 characters in length.
•
Type: Select Input, Output, or Not used. (Output is not
available on tabs 3 and 4.)
•
Logic low name: Describe the state of the device at logic
level low, up to 20 characters in length. (For example, if a
switch in the off position leads to a logic low, you could
choose to label it Switched Off.)
•
Logic high name: Describe the state of the device at logic
level high, up to 20 characters in length (such as Switched
On).
•
Alarm logic level: Assign an action associated with the I/O
port:
· high: a notification is sent, and the event is logged, if the
state changes from a logic low to a logic high.
· low: a notification is sent, and the event is logged, if the
state changes from a logic high to a logic low.
· log only: no notification is sent, but any change in logic
level is logged.
The name and location of the log file is specified on the
Advanced tab of the Options window (TOOLS > Options). By
default, the log file is located in the program folder or user
folder and is called MPlog.txt.
•
Rev 2.0 Oct.04
Current value: Shows the current value of the port.
45
46
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8: Sending Data to your Network
Application
• Configuring the
modem to route data
to a server
• Retrieving the Unique
Mobile Device ID
8
This chapter discusses how to configure the MP 700 Series GPS
modem to send GPS and I/O data to a network server. This is a
simple process that uses a single AT command. If, however,
there are any firewalls on your or your service provider’s
network, provision must be made to route the data through or
around the firewall. A general discussion of some methods of
dealing with firewalls is provided.
This chapter also explains how to retrieve the Unique Mobile
Device ID from the modem. This is the number that uniquely
identifies each modem. Any application that uses the GPS and
I/O data from the modem requires this number.
Configuring the modem to route
data to a server
The protocol that defines how the MP 700 Series GPS data is
packaged is called MTP (Monitoring and Tracking Protocol).
This protocol is explained in detail in the next chapter. MTP is
configured using the AT command AT!MPMTCONF. In issuing
this command, you specify the IP address and port number to
which the MTP data is to be sent, and values for the timers that
determine the frequency with which the data is to be sent.
These timers are discussed in the next section.
The MP 700 Series GPS modem provides four independent
reporting engines, allowing data to be sent to four different
destinations. This allows, for example, GPS data to be sent to
one host application, and I/O data to be sent to another. You
must configure each engine that you intend to use separately
using AT!MPMTCONF.
Report frequency timers
The low rate timer, fast rate timer, and GPS timer control the
interval between reports from the modem. The low rate timer
sets the interval at which reports are sent in the absence of any
other trigger or timer. The low rate timer is in minutes with a
Rev 2.0 Oct.04
47
default of three minutes. (The other timers are in seconds.) In
most configurations, the low rate timer does not come into
effect.
Note: Alarm triggers must be
configured locally on the
MP 700 Series GPS, using
either Watcher or the AT
command AT!MPDIOCFG.
The fast rate timer only becomes active when an alarm
condition is triggered by a rise or drop in the level of one of the
digital I/O channels. The default for the fast rate timer is three
seconds.
Note: When the fast rate timer is set to 0, a single report is sent when
an I/O alarm is triggered. It is not necessary to acknowledge the alarm
(as described on page 65).
If the GPS timer is set to a value other than 0, it controls the
frequency of reports in the absence of any alarm or event
triggers. (This is unless it is set to an interval that is longer than
the low rate timer, but since the low rate timer is in minutes
and the GPS timer is in seconds, the GPS timer typically has
the shorter interval.).
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Sending Data to your Network Application
Note: The “MP Rugged Wireless
Modem TAIP Reference”
provides a description of the
TAIP commands that can be
used with the
This document is available on
the Sierra Wireless web site,
www.sierrawireless.com. Information about the Lassen SQ
GPS modules, including more
documentation on TAIP
commands, is available at
www.trimble.com.
Rev 2.0 Oct.04
If the GPS timer is set to 0, reporting becomes “GPS driven”.
This means that the interval between reports is determined by
the configuration of the GPS module. If the GPS module is
configured for TAIP, the interval can be changed by issuing
TAIP commands. An advantage of configuring the report
frequency with TAIP commands is that you can specify a time
interval or a distance interval between reports. That is, you can
configure the module so that the frequency of the reports is
based on distance travelled and/or elapsed time.
TAIP commands can be issued to the module locally using the
AT command AT!MPGPSCMD. They can also be sent remotely
using MTP (Monitoring and Tracking Protocol—discussed in
the next chapter). If you configure the reports by simply
sending a TAIP command, that configuration does not persist
across power cycles. If you want to configure the TAIP reports
such that the configuration persists across power cycles, it is
best to include the TAIP commands in the initialization strings
for the modem, since commands in the initialization strings are
executed each time the modem is powered. The initialization
strings can be configured with the AT command
AT!MPGPSINIT or by using MTP. (See page 61.).
49
Note: The GPS module is
limited to NMEA GGA and
NMEA VTG messages only.
More information on NMEA
message standards is available
at www.nmea.org.
If the module is configured for NMEA, data is sent at fivesecond intervals. (The interval cannot be changed when the
module is configured for NMEA because NMEA is strictly a
reporting protocol.)
Note: The MP 700 Series GPS
AT Command Reference
describes how to establish a
session that allows you to send
AT commands. It also lists all
other AT commands that the
modem supports. The reference
is available on the Sierra
Wireless web site,
www.sierrawireless.com.
To set the MP 700 Series GPS to send MTP data to a network
server, you must issue the AT command AT!MPMTCONF to the
modem. The command has these parameters:
Note: The low rate, fast rate,
and GPS timers are discussed in
the section, “Report frequency
timers” on page 47.
MTP configuration
•
<engid>—the reporting engine:
0—engine 1
1—engine 2
2—engine 3
3—engine 4
•
<ctype>—the connection type:
0—the engine is unused
1—MTP embedded in UDP packets
2—unused
3—raw GPS data embedded in UDP packets
•
<destip>—the IP address of the network server.
•
<destport>—the port number on the network server to
which the MTP data is to be sent.
•
<lowtmr>—interval (in minutes) between reports sent by
the low rate timer. (The default is five minutes.)
•
<fasttmr>—interval (in seconds) between reports sent by
the high rate timer. (The default is three seconds.)
•
<gpstmr>—interval (in seconds) between reports sent by
the GPS timer. The default is ten seconds. (If this is sent to
0, the report frequency is “GPS driven”, as discussed in the
previous section.)
The MP 700 Series GPS sends MTP data to the IP address
specified by the <destip> parameter.
To send data to the MP 700 Series GPS, a host application on a
network server requires the IP address of the modem.
Typically service providers do not provide a static IP address
to each device on the network. Rather the IP address is dynamically assigned each time the modem registers on the GSM
network. This means that the host application must identify
each modem by its Unique Mobile Device ID (discussed on
page 53) and capture its IP address as it registers.
50
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Figure 8-1: An MP 700 Series GPS connected to a network server. In this
scenario, AT!MPMTCONF would have been used to configure the modem to
send data to the IP address 67.43.212.8. Since there are no firewalls, the
network server simply sends data to the IP address 192.218.36.5.
If the MP 700 Series GPS has a public IP address, the host
application can simply check the IP address on the incoming
data packets to determine the IP address of the modem.
However, if NAT (Network Address Translation) is in use, the
IP address assigned to the modem is likely to be a private IP
address. This may present problems, as discussed in the next
section.
The problem created by Network Address
Translation (NAT)
Note: A similar problem may
occur if NAT is in use on your
network. In this case, the host
application may reside on a
server that has a private IP
address. The
MP 700 Series GPS must be
configured to send data to a
server on your network with a
public IP address, and the server
must be configured to recognize
the MTP data and route it appropriately. (The UDP port number
might be used to route the data.
This is configured on the modem
using the <destport> parameter
of the AT command,
AT!MPMTCONF.)
Rev 2.0 Oct.04
Many service providers use NAT (Network Address Translation) which effectively creates a firewall in front of the GSM
network. Inside the GSM network, the service providers assign
private IP addresses to registered devices, since public IP
addresses are not needed to route data within the GSM
network. (This saves the service provider the expense of
having a large pool of public IP addresses.) A public IP
address is substituted for the private IP address when data
packets pass through the gateway between the GSM network
and the Internet. This public IP address might be used on data
transmissions from many different devices. The problem this
creates is that the network server is only aware of the substituted public IP address. If the server replies to this address, the
GSM network cannot identify the device for which the data
was intended.
Assume for example, an MP 700 Series GPS is registered on a
GSM network. On the GSM network the modem is assigned a
private IP address of 10.95.236.1. When the modem sends MTP
data to the network server, a public IP address of 24.7.6.30 is
substituted at the gateway to the Internet. When the network
server receives the data, the host application is only aware of
51
the public IP address, 24.7.6.30. However, if the network server
sends data back to the IP address 24.7.6.30, when the data
arrives at the GSM network, the network has no way of identifying the modem for which it is intended and is unable to
route the data appropriately.
Figure 8-2: An MP 700 Series GPS connected to a network server. In this
scenario, the IP address is “NATed” from 10.95.236.1 to 127.7.6.30. The
network server is only aware of the address 127.7.6.30 but if it sends data to
that address, the network cannot route the data to the modem.
Solutions to the NAT problem
If your service provider is using NAT, it is best to work with
the provider in devising a solution. Some service providers
offer, on request, accounts with public IP addresses. (There
may be additional charges for this.)
Another solution is to implement a frame relay connection
between your network and your service provider’s network.
The frame relay connection bypasses the address translation,
and is a method of overcoming NAT issues, encouraged by
some service providers.
NetMotion Wireless, Inc., Broadbeam Corporation, and
Padcom, Inc. are software vendors that develop client-server
applications that operate over wireless LANs (Local Area
Networks) and WANs (Wide Area Networks). The purpose of
these applications is to overcome the issues caused by NAT
addressing by assigning a consistent private IP address. These
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applications offer a potential solution to NAT issues, but they
are untested by Sierra Wireless, and Sierra Wireless does not
provide support for it.
Retrieving the Unique Mobile
Device ID
In order to associate GPS and I/O data with a particular
vehicle, you must create a database on your server that links
each modem’s Unique Mobile Device ID to the vehicle in
which it is installed. The Unique Mobile Device ID is a number
derived from the IMEI (International Mobile Equipment
Identity).
Use the AT command ATI4 to obtain the Unique Mobile Device
ID from each modem you deploy.
It may also be useful to assign a device name to the modem
that identifies the vehicle in which it is installed. This name can
be assigned locally using Watcher or remotely using MTP. (See
page 59). The device name is included in the MTP data sent to
the network server.
Rev 2.0 Oct.04
53
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9: Using the Monitoring and
Tracking Protocol
• The RNAP protocol
• The MTP protocol
9
This chapter describes the protocols used in data transmissions
between an MP 700 Series GPS modem and a network server,
providing the information necessary to develop host applications that process GPS and digital input data from a fleet of
MP 700 Series GPS modems. This discussion assumes that a
connection has been established between the modems and the
network server and that data is being received at the server.
(This was covered in the last chapter.)
All data sent from the MP 700 Series GPS is in the form of
UDP packets. The GPS and digital input data is encapsulated
within the UDP packets and framed according to two Sierra
Wireless proprietary protocols, RNAP (Remote Network
Access Protocol) and MTP (Monitoring and Tracking Protocol).
UDP
Packet
RNAP
Packet
Layer
RNAP
Multiplexing
Layer
MTP
Packet
Figure 9-1: Protocols used in data transmissions between the
MP 700 Series GPS and the network server
The host application must open a UDP socket through which it
receives the RNAP packets. It must then disassemble the
RNAP packets and the MTP packets to access the GPS and
digital input data. That data must then be parsed so that the
host application can process it to provide whatever information the host application is intended to provide.
The next two sections describe the RNAP and MTP protocols,
providing the information necessary to disassemble the
packets and parse the data.
The RNAP protocol
The RNAP protocol is designed to encapsulate several
different application protocols, of which only MTP is in use.
To allow for multiple application protocols, RNAP has been
designed with two layers: the packet layer, and the multiplexing layer.
Rev 2.0 Oct.04
55
Packet layer
At the packet layer, an RNAP packet consists of a two-byte
header followed by the message payload (a multiplexing layer
packet). The header only contains the length of the message
payload..
Header
(Packet length)
2 bytes
Message payload
(Multiplexing layer packet)
variable length up to 1410 bytes
Figure 9-2: RNAP Packet layer packet (the maximum length is 1412 bytes)
Multiplexing layer
At the multiplexing layer, an RNAP packet consists of a
10 byte header followed by the message payload (an MTP
packet). The header has five components.
Header
10 bytes
Message payload
(MTP packet)
variable length up to 1400 bytes
Header Option Application Unique Mobile Reserved for
version bits
Future Use
Device ID
ID
(32 bits, set to 0)
(4 bits) (4 bits)
(8 bits)
(32 bits)
3
Reserved
set to 0
0
2
1
Reserved Reserved Enable
set to 0
set to 0 encryption
Figure 9-3: RNAP Multiplexing layer packet. (Note that Bit 0 will, in future,
allow encryption to be enabled and disabled but encryption is not yet
supported.)
The header components are:
56
•
Header version (four bits)—revision number of the
header. The initial version is 0.
•
Option bits (four bits)—settings for options. Each bit is
designed to enable/disable an option. Bit 1, Bit 2, and Bit 3
are unassigned and reserved for future use. Bit 0 will, in
future, be used to enable (1) and disable (0) encryption.
(Encryption is not yet supported.)
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Using the Monitoring and Tracking Protocol
•
Application ID (8 bits)—code identifying the application
protocol. The only currently supported ID is ‘01’ for the
MTP protocol.
•
Unique Mobile Device ID (32 bits)—binary code identifying each individual MP 700 Series GPS modem. This is
not a user-defined ID. This number is derived from the
IMEI (International Mobile Equipment Identity).
For packets originating from the MP 700 Series GPS, this
identifies the source. For packets originating from the
server, this identifies the destination. When the packet
arrives at the MP 700 Series GPS, this ID is validated. If the
ID fails validation, the packet is silently discarded.
The host application must be able to recognize each vehicle
by this ID. See “Retrieving the Unique Mobile Device ID”
on page 53.
The MTP protocol
An MTP packet consists of a one-byte tag identifying the
message type, two bytes that identify the length of the
message, and the message payload.The message payload
contains the fields that correspond to the message type. Each
field is preceded by a one-byte field tag, and two bytes that
identify the length of the field.
Tag
(Message ID) Length
2 bytes
1 byte
Message payload
(variable length)
MTP message
Field Field ID Length Field
Field ID Length (variable
1 byte 2 bytes length) 1 byte 2 bytes (variable
length)
...
MTP message types
The table on the next page lists the six message types used in
the MTP protocol. The Message ID is the “tag” of the MTP
packet. Message types with ID numbers in the 0 to 127 range
are messages types sent from the MP 700 Series GPS to the
host application. Those with Message ID numbers in the 128 to
Rev 2.0 Oct.04
57
255 range are message types sent from the host application to
the MP 700 Series GPS. This section provides the information
required to parse those message types.
Table 9-1: MTP message types
Message type
Message
ID
MT_SUM_REG_IND 0x00
Description
Unsolicited summary/
registration information
This is the message in which
GPS and digital input data
from the modem is sent. It is
sent at regular intervals
based on the low rate, fast
rate, and gps timers
discussed on page 47. It is
also sent on the occurrence
of certain events, as shown
in the table on page 64.
MT_CONF_RSP
0x01
Response to configuration
This message is sent from
the modem in response to
MT_CONF_REQ. It
indicates whether the
configuration attempt was
successful.
MT_SUM_RSP
0x02
Response to summary
This message has the same
format as
MT_SUM_REG_IND but is
only sent in response to
MT_SUM_REQ.
MT_CONF_REQ
0x80
Configuration request
This message is used to
configure the report rate,
device name, and server IP
address, for a particular
engine. This message can
also be used to send TAIP
commands to the GPS
module and to edit the
initialization strings of the
modem.
58
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Table 9-1: MTP message types
Message type
MT_SUM_REQ
Message
ID
0x81
Description
Request summary
This message triggers the
modem to send
MT_SUM_REG_IND for a
particular engine.
MT_ALM_RST_IND
0x82
Latched alarm reset
This resets a digital input
alarm and de-activates the
fast rate timer. See “Alarm
acknowledgement” on
page 65.
The next tables specify the fields within each message type.
The Field ID is the code that must precede the length and
contents of the field when the MTP packets are assembled.
Table 9-2: MT_SUM_REG_IND (Unsolicited Summary / Registration Info) and
MT_SUM_RSP (Response to Summary Request)
Field
Field
ID
Description
Contents
MT_SR_ENGINE_ID
0x00
Engine ID.
One byte:
• 0—Engine 1
• 1—Engine 2
• 2—Engine 3
• 3—Engine 4
MT_SR_MP_NAME
0x01
Device name (set using
Watcher or the
MT_CONF_REQ message)
Variable length buffer (maximum 24
bytes) in Unicode format.
MT_SR_GPS_TAIP
0x02
If the GPS module is
configured for TAIP, this field
contains one or more
concatenated TAIP
messages.
Variable length buffer.
MT_SR_GPS_NMEA
0x03
If the GPS module is
configured for NMEA, this
field contains one or more
concatenated NMEA
messages. (These may be
of the type GGA, VTG, or
both.)
Variable length buffer.
Rev 2.0 Oct.04
59
Table 9-2: MT_SUM_REG_IND (Unsolicited Summary / Registration Info) and
MT_SUM_RSP (Response to Summary Request)
Field
Field
ID
Description
Contents
MT_SR_RSSI_MEAS
0x04
Current RSSI measurement
in dBm (decibels relative to
one milliwatt).
Two byte signed int16.
MT_SR_IO_STATUS
0x05
Digital input, alarm, battery,
and ignition status.
Four bytes:
• Byte 1—external digital input
status.
Bits 0 to 3 correspond to binary
inputs 0 to 3. For each bit, 1 is
“High” and 0 is “Low”.
Bits 4 to 7 are reserved.
• Byte 2—alarm status.
inputs 0 to 3. For each bit, 1
indicates that the alarm is on and
0 indicates that the alarm is off.
inputs 0 to 3. These bits toggle
when the alarm state switches
between “Idle” and “Latched and
Active”. See “Alarm acknowledgement” on page 65.
• Byte 3—battery status.
0x00—battery not low
0x01—battery low
• Byte 4—ignition sense status.
0—ignition is on
>0—ignition is off
Table 9-3: MT_CONF_RSP (Response to Configuration Request)
Field
MT_CRSP_ENGINE_ID
60
Field
ID
0x00
Description
Engine ID.
Contents
One byte:
• 0—Engine 1
• 1—Engine 2
• 2—Engine 3
• 3—Engine 4
2130346
Table 9-3: MT_CONF_RSP (Response to Configuration Request)
Field
Field
ID
Description
Contents
MT_CRSP_RESP_CODE
0x01
Response code.
One byte:
• 0—OK
• 1—Error
MT_CRSP_RESP_STRG
0x02
Response string.
Variable length ASCII string
providing a plain text
description of the error
condition, if applicable. NULL
termination is not required as
the tag length indicates the
length of the string.
Table 9-4: MT_CONF_REQ (Configuration Request)
Field
Field
ID
Description
Contents
MT_CREQ_ENGINE_ID
0x00
Engine ID.
One byte:
• 0—Engine 1
• 1—Engine 2
• 2—Engine 3
• 3—Engine 4
MT_CREQ_MP_NAME
0x01
Device name (set using
Watcher or the
MT_CONF_REQ message).
(Optional).
Variable length buffer
(maximum 24 bytes) in
unicode format.
MT_CREQ_CONN_TYPE
0x02
Connection type. (Optional).
One byte:
• 0—engine is disabled.
• 1—UDP.
• 2—TCP (not currently
supported).
Any other value represents a
configuration error.
MT_CREQ_SERVER_IPV4
0x03
Server IP address.
(Optional).
Four bytes, with each byte in
the range 0 to 255.
MT_CREQ_SERVER_PORT
0x04
Server port number.
(Optional).
Two byte port number.
MT_CREQ_LOW_RATE
0x05
Low reporting rate. See
“Report frequency timers” on
page 47. (Optional).
One byte:
• 0—disabled
• 1 to 255—low rate in
minutes. The default is 3.
Rev 2.0 Oct.04
61
Field
62
Field
ID
Description
Contents
MT_CREQ_FAST_RATE
0x06
Fast reporting rate. See
page 47. (Optional).
One byte:
• 0—disabled.
• 2 to 30—fast rate in
seconds. (The default is
3.)
Any other value (including 1)
represents a configuration
error.
MT_CREQ_GPS_RATE
0x07
GPS polling rate. (Optional).
One byte:
• 1 to 255—Sets the GPS
polling rate in seconds.
This sets the minimum
interval between
MT_SUM_REG_IND
messages. (The default
is 10.)
• 0—The
MT_SUM_REG_IND
message is sent based
on the GPS module
configuration.
If the rate is set to 0, reporting
is “GPS driven”, otherwise the
reporting is “polled”. See
page 47.
MT_CREQ_GPS_CONF
0x08
GPS configuration.
(Optional).
Variable length buffer. The
content of this field is any valid
TAIP message, relayed
directly to the GPS module of
the MP 700 Series GPS. Note
that the contents of this field
are ignored by the GPS
module if the module is
configured for NMEA.
MT_CREQ_GPS_INIT1
0x09
GPS initialization string 1.
(Optional).
Variable length buffer. The
content of this tag is any valid
TAIP message, issued to the
GPS module during MP
startup. See “Report
frequency timers” on page 47.
MT_CREQ_GPS_INIT2
0x0A
(Optional).
Same as
MT_CREQ_GPS_INIT1.
MT_CREQ_GPS_INIT3
0x0B
(Optional).
Same as
MT_CREQ_GPS_INIT1.
2130346
Field
Field
ID
Description
Contents
MT_CREQ_GPS_INIT4
0x0C
(Optional).
Same as
MT_CREQ_GPS_INIT1.
MT_CREQ_GPS_INIT5
0x0D
(Optional).
Same as
MT_CREQ_GPS_INIT1.
Table 9-5: MT_SUM_REQ (Request Summary)
Field
MT_SREQ_ENGINE_ID
Field
ID
0x00
Description
Engine ID.
Contents
One byte:
• 0—Engine 1
• 1—Engine 2
• 2—Engine 3
• 3—Engine 4
Table 9-6: MT_ALM_RST_IND (Latched Alarm Reset)
Field
Field
ID
Description
Contents
MT_ARI_ENGINE_ID
0x00
Engine ID.
One byte:
• 0—Engine 1
• 1—Engine 2
• 2—Engine 3
• 3—Engine 4
MT_ARI_DIO_ALM_ACK
0x01
Digital input alarm
acknowledgement.
One byte:
• Bits 0 to 3—correspond to
binary inputs 0 to 3. For
each bit, “1” indicates an
alarm reset, and “0”
indicates no action.
• Bits 4 to 7—correspond to
binary inputs 0 to 3.
These bits are copied
from Byte 2, Bits 4 to 7 of
the MT_SR_IO_STATUS
field of the
MT_SUM_REG_IND
message. (See page 59.)
Rev 2.0 Oct.04
63
Summary/registration message
frequency
When the MP 700 Series GPS has a GPRS/EDGE connection to
the network, it sends the summary/registration message
(MT_SUM_REG_IND) to the host application at regular
intervals, as well as on the occurrence of specific events. This
message contains an engine ID, the device name, GPS data in
the form of either a TAIP or NMEA message, the RSSI value,
and the status of the digital input ports.
The interval at which the MT_SUM_REG_IND message is
regularly sent is governed by three timers: the low rate timer,
the fast rate timer, and the GPS timer. These are discussed in
the section “Report frequency timers” on page 47.
As well as occurring at intervals based on the timer settings,
the MT_SUM_REG_IND message is triggered by the events
listed in the following table:
Table 9-7: Events which trigger MT_SUM_REG_IND
Event
Description
Change in IP
address
Anytime the MP 700 Series GPS
changes IP addresses,
MT_SUM_REG_IND is sent for
registration.
Digital input alarm
When an alarm is triggered by a drop or
rise in the level of a digital input port,
MT_SUM_REG_IND is sent at a faster
rate (as determined by the fast rate timer
described above). The message is sent
at the faster rate until it is acknowledged.
See “Alarm acknowledgement” below.
Change in battery
status
MT_SUM_REG_IND is sent whenever
the battery voltage rises or drops to predetermined levels.
Change in ignition
sense
MT_SUM_REG_IND is sent when at any
change in ignition status occurs.
TAIP commands
The MT_CONF-REQ message type allows you to issue TAIP
commands to the GPS module (if the module is configured for
TAIP rather than NMEA). You can send any TAIP command at
any time using the MT_CREQ_GPS_CONF field, however if you
use this to configure the GPS module, the configuration does
not persist across power cycles. If you want to configure the
TAIP reports such that the configuration persists across power
cycles, it is best to include the TAIP commands in the initialization strings for the modem, since commands in the initialization strings are executed each time the modem is powered.
64
2130346
The MT_CONF_REQ message includes five fields (those
beginning with MT_CREQ_GPS_INIT) for that purpose. TAIP
commands in those strings are executed in sequence from
MT_CREQ_GPS_INIT1 to MT_CREQ_GPS_INIT5.
Alarm acknowledgement
Note: When the fast rate timer is
set to 0, a single report is sent
when an I/O alarm is triggered. It
is not necessary to acknowledge
the alarm.
Rev 2.0 Oct.04
As stated above, when a digital input alarm occurs, the
MP 700 Series GPS starts sending the MT_SUM_REG_IND
message at the interval designated by the fast rate timer. The
faster rate is used until the host application acknowledges the
alarm by sending the MT_ALM_RST_IND message. Even if the
alarm goes off, the modem persists in sending
MT_SUM_REG_IND with the alarm set on, until the acknowledgement is received. (That is, the alarm is “latched and
active” until it is reset by the host application with the
MT_ALM_RST_IND message. )
65
The alarm becomes “idle” on receipt of the MT_ALM_RST_IND
acknowledgement. The MP 700 Series GPS then resumes
sending MT_SUM_REG_IND at its regular rate.
66
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10: Support and Warranty
• Technical support
• Warranty
10
Technical support
To obtain technical support for your
MP 700 Series GPS modem, and firmware and software
upgrades, please contact your account manager at your
reseller or service provider.
Online technical support resources are also available at
www.sierrawireless.com.
Warranty
Sierra Wireless warrants the MP 700 Series GPS modem
against all defects in materials and workmanship for a period
of three (3) years from the date of purchase.
The sole responsibility of Sierra Wireless under this warranty
is limited to either repair or, at the option of Sierra Wireless,
replacement of the modem. There are no expressed or implied
warranties, including those of fitness for a particular purpose
or merchantability, which extend beyond the face hereof.
Sierra Wireless is not liable for any incidental or consequential
damages arising from the use, misuse, or installation of the
This warranty does not apply if the serial number label has
been removed, or if the wireless modem has been subjected to
physical abuse, improper installation, or unauthorized modification.
Rev 2.0 Oct.04
67
68
2130346
11: Technical Specifications
• RF and electrical
specifications
• Environmental
specifications
• Weight and
dimensions
• GPS performance
• I/O port characteristics
11
This chapter provides technical data for the
MP 700 Series GPS modem. (For information on the behavior
of the LED indicators on the modem, see “Reading the status
indicators” on page 24.)
RF and electrical specifications
Table 0-1: Radio frequency & electrical
specifications
Rev 2.0 Oct.04
Approvals
FCC
Industry Canada
PTCRB
eMark (MP 750 GPS only)
CE (MP 750 GPS only)
Compliance
Compliant with:
MP 750 GPS
GPRS GSM Release 97 SMG 31 Phase 2+
MP 775 GPS
3GPP Release 1999
Voltage Range
9 - 36 VDC
69
Table 0-1: Radio frequency & electrical
specifications
Current
MP 750 GPS
Max transmita
(EGSM, 2 W, 4 Tx slots):
500 mA average
Typical transmit
(DCS/PCS, 1 W, 2 Tx slots):
220 mA average
Receive:
160 mA
Ignition off:
2 mA
MP 775 GPS
Max transmitb
(EGSM/Cell, 2 W, 4 Tx slots):
458 mA average
Typical transmit
(DCS/PCS, 1 W, 2 Tx slots):
265 mA average
Receive:
200 mA
Ignition off:
3.2 mA
Maximum Output
Power
1 W (PCS/DCS 1800)
2 W (EGSM)
Multi-slot class
Class 12
Transmit
MP 750 GPS
PCS:
1850 to 1910 MHz
DCS1800:
1710 to 1785 MHz
EGSM900:
880 to 915 MHz
Receive
MP 750 GPS
PCS:
1930 to 1990 MHz
DCS1800:
1805 to 1880 MHz
EGSM900:
925 to 960 MHz
Channel spacing
200 kHz
Frequency
stability
0.1 ppm
MP 775 GPS
PCS:
1850 to 1910 MHz
DCS1800:
1710 to 1785 MHz
EGSM900:
880 to 915 MHz
GSM850
824 to 849 MHz
MP 775 GPS
PCS:
1930 to 1990 MHz
DCS1800:
1805 to 1880 MHz
EGSM900:
925 to 960 MHz
GSM850:
869 to 894 MHz
a. This applies to a typical installation with a well-matched antenna.
All current values are measured with an input voltage of 12 V.
Except for the peak current, other reported values are averages.
70
2130346
Technical Specifications
b. This applies to a typical installation with a well-matched antenna.
All current values are measured with an input voltage of 12 V.
Except for the peak current, other reported values are averages.
Environmental specifications
Table 0-2: Environmental specifications
Operating
temperature
-40 to +70 °C
(-40 to +158 °F)
Storage
temperature
-40 to +85 °C
(-40 to +185 °F)
Humidity
95% RH non-condensing
SAE J1455 4.2
MIL 202G 103B and 106G
MIL 810F 507.4
Vibration
SAE J1455 4.9
MIL 202G 214
MIL 810F 514.5
Shock
SAE J1455 4.10.3.2 and 4.10.3.4
MIL 202G 213B
MIL 810F 516.5
ESD
+/- 4 kV contact
Drop
SAE J1455 4.10.3.1 and 4.10.3.2
MIL 810F 516.5
Splash
SAE J1455 4.4
Weight and dimensions
Table 0-3: Weight and dimensions
Rev 2.0 Oct.04
Weight
0.9 kg (2 lbs)
Height
49 mm (1.93 in)
Width
138 mm (5.43 in)
Length
176 mm (6.93 in)
71
GPS performance
Table 0-4: GPS performance
Accuracy
Horizontal:
< 6 m (50%), < 9 m (90%)
Altitude:
< 11 m (50%), < 18 m (90%)
Velocity:
0.06 m/sec
Acquisition times
Re-acquisition
< 2 sec (90%)
Hot start:
< 14 sec (50%), < 18 sec (90%)
Warm start:
< 38 sec (50%), < 45 sec (90%)
Cold start:
< 90 sec (50%), < 170 sec (90%)
Operational limits
Altitude:
< 18,000 m or velocity < 515 m/sec
(either limit may be exceeded but not both)
I/O port characteristics
Table 0-5: I/O port characteristics
Absolute max
voltage
-0.3 VDC to 36 VDC
Digital inputs
Open-collector, max current 500 mA
Vih, min 2 VDC
Vil, max 0.8 VDC
Vih, max 36 VDC
72
Digital outputs
Open-collector
Analog input
Zero-scale: 0 VDC
Full-scale: 3.3 VDC
Leakage current: 66 µA
2130346
12: Regulatory Information
• European Union
• Canada (Industry
Canada approval)
• U.S.A. (FCC approval)
12
European Union
Declaration of Conformity for CE Marking
0682
We,
Sierra Wireless
13811 Wireless Way
Richmond, BC
Canada V6V 3A4
declare under our sole responsibility that the product
MP 750 GPS, to which this declaration relates, is in conformity
with the following standard(s) or other normative
document(s):
•
R&TTE 1999/EEC
· EN 301 511; V7.0.1
· EN 301 489-7 (9-2000)
· EN 60950:2000
· EC Recommendation 1999/519/EC
Steve Blaine
Vice President of Engineering
Rev 2.0 Oct.04
73
Canada (Industry Canada
approval)
Note: Unauthorized modifications or changes not expressly
approved by Sierra Wireless,
Inc. could void compliance with
regulatory rules, and thereby
your authority to use this
equipment.
To ensure that the MP 700 Series GPS modem meets Health
Canada’s Safety Code 6 requirements, a separation distance of
at least 20 cm must be maintained between the modem’s
GPRS/EDGE antenna and the body of the user and any nearby
persons at all times and in all applications and uses.
Additionally, to comply with Industry Canada and Health
Canada regulations limiting both maximum RF output power
and human exposure to RF radiation, the maximum antenna
gain for MP 750 GPS, including cable loss, must not exceed
4 dBi, and the maximum antenna gain for the MP 775 GPS,
including cable loss, must not exceed 4.5 dBi.
U.S.A. (FCC approval)
To comply with FCC regulations limiting both maximum RF
output power and human exposure to RF radiation, the
maximum antenna gain for the MP 750 GPS, including cable
loss, must not exceed 4 dBi, and the maximum antenna gain
for the MP 775 GPS, including cable loss, must not exceed
4.5 dBi. The GPRS/EDGE antenna must be mounted such that
there is a separation distance of at least 20 cm between the
GPRS/EDGE antenna and the body of the user or any nearby
persons.
Note: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will
be required to correct the interference at his own expense.
74
2130346
Index
A
F
account, 11, 19
always on (operating mode), 29
analog input
configuration, 44
wiring, 41
approvals, 69
AT commands
GPS, 34
I/O configuration, 41
MTP configuration, 47
unique mobile device ID, 53
audio connector, 27
auto connect, 30
fast rate timer, 47
firewall, 51
frequencies
receive, 70
transmit, 70
frequency bands, 12, 70
C
CDMA
overview, 10
CE
declaration of conformity for
CE marking, 73
class, multi-slot, 70
coverage, 11
CSD (Circuit Switched Data), 10,
10
current, 70
D
data connections, 29
auto connect, 30
DB9. See serial
declaration of conformity for CE
marking, 73
device name, 53
dial-up connections, 12
digital input
configuration, 45
wiring, 39
digital output
alarm acknowledgement, 65
configuration, 45
wiring, 40
dimensions, 71
documentation, 14
drop, 71
E
G
gauges. See I/O devices
GPRS
connections, 29
overview, 10
GPS
configuration and reporting,
33– 38
performance, 72
GPS timer, 47
GSM, 10
H
headset, 27
height, 71
humidity, 71
I
I/O devices, 38– 45
alarm, 48
alarm acknowledgement, 65
analog, 41
digital, 39
I/O port characteristics, 72
ignition options, 23
inputs. See I/O devices
installation
hardware, 14
software, 15– 17
L
LEDs, 24
low rate timer, 47
M
manuals, 14
electrostatic discharge (ESD), 71
Rev 2.0 Oct.04
75
MTP, 57– 66
configuring, 47
report frequency, 47
multi-slot class, 70
N
NAT, 51
NMEA, 34
O
on demand (operating mode), 29
operating modes, 29
output power, 70
outputs. See I/O devices
P
PC connection, 13
pinouts (on I/O connector), 38
power on options, 23
private IP address, 51
profiles, 21
public IP address, 51
R
receive frequencies, 70
regulatory information, ??– 74
report frequency, 47, 64
reporting engines, 47, 50
reset button, 24, 25
RNAP, 55
roaming, 12
S
sensors. See I/O devices
serial
switching between USB and
serial, 16
versus USB, 13
shock, 71
SIM, 19
insertion, 19
76
software
installation, 15– 17
specifications, 69– 72
splash, 71
status indicators, 24
system requirements, 15
T
TAIP
commands, 37
reporting protocol, 34
sending commands remotely, 64
technical specifications, 69– 72
temperature
operating, 71
storage, 71
timers
report frequency, 47
transmit frequencies, 70
U
unique mobile device ID, 53
USB
supported operating systems, 15
switching between serial and
USB, 16
versus serial connection, 13
V
vibration, 71
voice calls, 27
voltage, 39
voltage range, 69
W
warranty, 67
Watcher, 25– 26, ??– 31
installation, 15– 16
weight, 71
width, 71
Windows (supported versions),
15
2130346

MP 700 Series GPS modem 2.0

Transcripción

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