1. Introduction
1.1. Overview
USR-M300 is a high-performance and scalable edge IOT gateway. This device integrates edge collection,
data calculation, data reading and writing, active reporting, linkage control, IO collection and control and other
functions. The collection protocol includes standard Modbus protocol and a variety of common PLC protocols, as
well as industry-specific protocols. At the same time, the product also has routing and VPN as well as graphical
programming functions to ensure data transmission security. Using graphical programming, users can develop
independently to achieve the required functions.
USR-M300 is embedded in Linux kernel, with a main frequency of up to 1.2Ghz. It can access the Internet via
Ethernet port, ADSL and LTE cat4 cellular network to achieve easy network deployment.
It is widely used in various industrial intelligent solutions such as industrial robot, smart factories, smart
agriculture, smart water management system etc.
1.2. Features
• Dual-core professor with ultra-high performance, the main frequency is up to 1.2Ghz, providing high-
performance processing resources for edge computing.
• Supports Python development, for developing user custom applications.
• Supports graphical programming to facilitate user development.
• LTE 4G and Ethernet network serve as backups for each other to ensure stable network transmission
without downtime.
• Integrated 1*WAN/LAN and 1*LAN Ethernet port, VPN and firewall protection to ensure safe data
transmission.
• Integrated 2 serial ports: 1*RS232/485, 1*RS485, which can transform traditional serial devices into IOT
devices.
• Comes with IO interface: 2*DI, 2*DO, 2*AI, flexible expandable IO module is supported.
• Powerful edge gateway function: supports edge collection, edge computing, group reporting, and
supports real-time collection of up to 2000 points.
• Supports major industrial protocols including Modbus TCP/RTU, PLC protocols and OPC UA Server.
• Support 2 socket channels, each channel supports TCP(SS)/UDP, MQTT(S) protocols.
• Cloud support: MQTT via AWS IOT, Alibaba Cloud, and PUSR Cloud.
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General