What Are M2m Modems in the Internet of Things?

To access the Internet from any device (PC, tablet, or smartphone), M2m modems or hotspots are required. Most broadband and mobile M2m modems operate on "4G" or fourth-generation network systems. While many of the basic principles of Internet connectivity are consistent with M2m modem technology, there are a number of changes that affect how users connect to the network and stay connected. So what exactly are M2m modems?

What is M2M Modem

The M2m modem, also known as a "data transmission terminal", is a wireless terminal device dedicated to converting IP data into serial port data or converting serial port data into IP data and transmitting the data through a wireless communication network. M2m modems can also realize the function of wireless network data transmission. According to the different transmission modes and networks used in data transmission, M2m modems can be divided into many types. For example M2M modems, NB-IOT M2M modems, LORA M2M modems, and GORS M2M modems. The M2m modem is a wireless data transmission terminal that uses the 4G network for data transmission. Nowadays, with the continuous development of the Internet of Things industry, more and more manufacturers produce Internet of Things equipment. Different manufacturers integrate different functions on the M2m modem equipment according to different needs.

How M2m Modems Work

The working principle of M2m modems is to connect the terminal equipment through the interface, obtain the data and then transmit it wirelessly through the operator network (2G/3G/4G/5G) to the data center or equipment. At the same time, the reverse data center can also send data or instruct the operator network to transmit to the M2m modems, and the M2m modems can transmit to the terminal device through the interface.

Functions and Features of M2m Modem

Support TCP/UDP/HTTP/MQTT multiple network protocol servers

Support the Modbus polling function. M2m modems can be used as the master station for active polling acquisition. Multiple RS485 slave devices are determined according to the acquisition cycle.

Support custom login package/heartbeat package. The heartbeat package supports setting the sending interval to prevent network disconnection and dead links. The content of the heartbeat package can be customized. The heartbeat package mechanism ensures that the device is continuously online.

Support 3-way Socket link, and each Socket works independently for data transmission, multi-server data transmission, backup, and abnormal diagnosis.

support script programming, users can achieve custom functions through script programming

Remote parameter modification and remote upgrade. With the remote management platform, remote parameter modification and remote firmware upgrades can be realized to ensure long-term reliable and stable operation and save traffic and time.

M2m modems can be simply divided into industrial M2m modems and ordinary M2m modems according to the different hardware facilities used. The main difference between them lies in the different use environments. Industrial M2m modem is more suitable for industrial fields, outdoors, and other harsh environments. Ordinary M2m modems are more suitable for indoor operating environments.

M2m modem is a terminal device widely used for data transmission in the industrial Internet of Things. The raw data of various sensor serial ports are transmitted to the M2m modem to the 4G network through RS485/232 for bidirectional and transparent transmission. It supports Modbus RTU to TCP/MQTT. It is widely used in remote power monitoring, hydrological and water resources monitoring, mountain flood geological disaster monitoring and early warning, environmental pollution monitoring, meteorological data acquisition, forest fire prevention monitoring, and other fields.

USR-G786 is a 4G all-Netcom gateway used by the EMCP IoT cloud platform to connect downstream devices. It is designed to meet industrial standards and the needs of industrial users. It uses a high-performance industrial ARM processor + 4G communication module to improve device stability through software multi-level detection and hardware multiple protection mechanisms. The G786 can be connected to the EMCP IoT cloud platform via a 4G/2G network or a wired network. With isolation protection, EMC protection, and other protection designs, it is suitable for harsh industrial sites.

G786 supports multi-brand PLC and other mainstream protocol analysis and realizes PLC remote data monitoring, PLC remote programming, PLC remote debugging, PLC program remote uploading and downloading, PLC remote control, and other functions. When the equipment is abnormal (data, communication, etc.), G786 will send alarm information to the user in a variety of ways, and the alarm information can be obtained through SMS. Users can remotely configure G786 parameters through the platform, which is easy to use and easy to create a reliable data communication network.