GPS protocols and commands

MP875 Modem User Guide

Note: The “MP 3G Modems TAIP Reference manual” (document #2130312) provides a description of the TAIP commands that can be used with the MP modem. This is available at www.sierrawireless.com. Information about Trimble GPS modules, including more documentation on TAIP commands, is available at www.trimble.com.

More information on NMEA message standards is available

at www.nmea.org.

The GPS module supports two methods of reporting naviga‐ tional information, using either the TAIP (Trimble ASCII Interface Protocol) or NMEA (National Marine Electronics Association) protocols. The GPS module is pre‐configured for TAIP. If you are using a GPS application that requires data to be reported according to the NMEA protocol, the MP modem must be reconfigured using an AT command. (See the MP 3G Modems AT Command Reference manual (document #2130810.)

NMEA is a reporting protocol only, while TAIP provides the ability to send commands to the module to query for infor‐ mation and configure reports. When the MP modem is set for TAIP, commands can be sent to the MP modem in these ways:

•Using 3G Watcher

•Using AT commands

TAIP commands can be used to:

•Query the MP modem for its current position, heading, and speed

•Enable and disable automatic reporting of GPS data, and set the interval at which automatic reports are sent

•Configure the format of reports

GPS display in 3G Watcher

To view 3G Watcher’s GPS Display window, which reports latitude, longitude, speed, direction, altitude, and local and UTC time1, select Tools > Display GPS or double‐click the GPS icon on the main 3G Watcher window.

From a cold start (where the MP modem is powered on with no stored navigational data), it may take up to 39 seconds for the GPS module to obtain satellite fixes and begin reporting.

1.UTC replaces Greenwich Mean Time as the basis for standard time throughout the world. UTC, which uses atomic measurements rather than the Earth’s rotation, is the equivalent of mean solar time at the prime meridian (0° longitude).


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MP 875 specifications

The Sierra Wireless MP 875 is a cutting-edge device designed to cater to the needs of modern IoT applications and mobile networking solutions. This rugged mobile router stands out for its robustness, versatility, and advanced features, making it an ideal choice for industries such as transportation, public safety, and remote work environments.

At the heart of the MP 875 is its support for both LTE and advanced LTE-A technologies, providing high-speed internet access with speeds reaching up to 300 Mbps. This enables seamless connectivity for multiple devices, supporting applications such as video streaming, real-time data transfer, and cloud-based solutions. The dual-SIM capability enhances network reliability and allows for automatic failover, ensuring continuous connectivity even in remote locations.

One of the key characteristics of the MP 875 is its rugged design, built to withstand tough environmental conditions. The IP67-rated casing ensures protection against dust and water, making it suitable for deployment in harsh outdoor settings. Its wide operating temperature range further enhances its versatility, allowing it to function effectively in extreme heat or cold.

Another notable feature is the onboard Wi-Fi, which supports both 2.4 GHz and 5 GHz bands, enabling the connection of multiple devices with minimal interference. This dual-band functionality provides users with the flexibility to optimize their wireless connections based on their specific requirements. Additionally, the MP 875 includes comprehensive security features, such as VPN support, firewall protection, and advanced encryption protocols to safeguard sensitive data.

Moreover, the device supports various IoT applications, including fleet management, asset tracking, and telemetry. With built-in GPS capabilities, users can easily track the location of their assets or vehicles in real-time, enhancing operational efficiency and safety.

The MP 875 also boasts a user-friendly management interface, allowing for straightforward configuration and monitoring of devices. Remote management capabilities facilitate streamlined updates and troubleshooting, reducing downtime and improving overall productivity.

In conclusion, the Sierra Wireless MP 875 is an advanced mobile router that excels in providing reliable, high-speed connectivity in a rugged form factor. Its blend of LTE technologies, robust design, and comprehensive security features makes it an exceptional choice for businesses looking to leverage the power of IoT and mobile networking. Whether for transporting goods, managing public safety operations, or enabling remote work solutions, the MP 875 is a reliable partner for modern connectivity needs.