Multi-Tech Systems iCell GPRS (MTSMC-G2-IP specs

Part 6 – AT Commands for GPS-Enabled Devices

Chapter 16 – AT Commands for GPS-Enabled Devices

Application Note – GPS NMEA Messages

Introduction

The NMEA (National Marine Electronics Association) 0183 Standard is a standard protocol for interfacing navigational devices; e.g., GPS and DGPS receivers over a serial interface. The complete document of this standard may be obtained from NMEA at http://www.nmea.org. We wish to thank SkyTraq Technology, Inc. for providing the following summary of NMEA Messages.

NMEA Protocol Overview

Message Format

The structure of an NMEA message is shown below.

Checksum Range

	Start of	Address Field	Data Field(s)	Checksum	End of
S	equence			Field	Sequence
$	or !	<Address>	[,<data field>] [,<data field>]	*<checksum>	<CR><LF>

Start of Sequence

All sentences begin with the sentence start delimiter character “$” or “!”.

Address Field

The address field is used to define the sentence. Characters with digits and upper case letters are permitted to be in the address field. Note that the address field is required. It cannot be a null field. This field is subdivided into 2 fields.

<XX>	<XXX>
Talker Identifier	Sentence Formatter

Talker Identifier is always GP for a GPS receiver. The sentence formatter defines the format and the type of data.

Data Field(s)

Data fields are delimited by a “,” and contain valid characters specified in NMEA 0183 standard. It can consist of fields of variable lengths.

Checksum

The checksum field is the 8-bit exclusive OR (no start or stop bits) of all characters in the sentence. Checksum consists of 2 characters and is represented as a hex number.

End of Sequence

All sentences always end with sentence termination delimiter character “$” or “!”.

Universal IP AT Commands Reference Guide (Document S000457K)

iCell GPRS (MTSMC-G2-IP specifications

Multi-Tech Systems iCell GPRS (MTSMC-G2-IP) is a versatile and powerful device designed for seamless connectivity in various applications, particularly in industrial and commercial environments. Known for its robust performance, the iCell GPRS module incorporates advanced technologies that enable effective communication over GPRS networks, making it an ideal solution for IoT applications, remote monitoring, and data collection processes.

One of the main features of the iCell GPRS is its dual SIM capability, which enhances network reliability and ensures continuous connectivity even in the event of network outages. By allowing the use of two SIM cards from different carriers, the device can switch between networks automatically, thereby minimizing downtime and maintaining critical communication channels.

The iCell GPRS supports various protocols including TCP/IP, UDP, and MQTT, which facilitates seamless integration with a range of applications. This flexibility in communication protocols allows developers to create customized solutions tailored to their specific needs, ensuring that the device can fit seamlessly into their existing infrastructure.

Another key characteristic of the MTSMC-G2-IP is its compact design and durability, making it suitable for deployment in a variety of environments. It features a wide operating temperature range that allows it to function efficiently in both extreme heat and cold, thereby catering to diverse applications across different industries. Additionally, the device is designed for easy installation and integration, which helps reduce deployment time and costs.

The iCell GPRS also includes built-in security features such as firewalls and secure data transmission protocols, protecting sensitive information from unauthorized access. This is particularly important for applications in sectors such as healthcare, finance, and transportation, where data integrity and security are paramount.

Furthermore, the device is equipped with various I/O ports that facilitate connectivity with external sensors, actuators, and other hardware. This feature makes it highly adaptable for monitoring and control systems, enabling users to gather real-time data and respond promptly to changing conditions.

In sum, the Multi-Tech Systems iCell GPRS (MTSMC-G2-IP) is a reliable and feature-rich solution designed for modern communication needs. Its dual SIM support, protocol versatility, robust design, and integrated security features make it an ideal choice for IoT and remote monitoring applications across numerous industries. Whether used in industrial automation, environmental monitoring, or smart cities, the iCell GPRS stands out as a dependable device that enhances connectivity and operational efficiency.