User Manual
Your Trustworthy Industrial IoT Partner www.pusr.com
1. Introduction
1.1. Overview
The USR-M100 is an intelligent IoT I/O gateway with comprehensive functions like on-board I/O support and RS-485/232/Ethernet
interface, is an advanced modular RTU product with a unique hardware and software design, making it an ideal solution for a variety
of industrial data acquisition applications.
The USR-M100 has a unique mechanical design that reduces the amount of time required for installation and removal, simplifying
deployment and maintenance. In addition, the USR-M100 supports Modbus RTU Master protocol for retrieving field site serial data
from serial meters and also supports OT/IT protocol conversion.
With the ability to convert between multiple protocols, USR-M100 can convert the collected I/O and serial data to protocols suitable
for different upper-level software. For example, cloud service via MQTT, SCADA via Modbus TCP, web server via HTTP, and more.
This two-in-one design reduces system complexity, the amount of space required in the network topology, and overall installation
time. You can also connect your legacy devices to Ethernet, thereby increasing the lifetime of the devices since you can continue
using the devices’ original protocols.
1.2. Features
High-performance CPU processing ability,using 32-bit Arm Cortex-M7 core CPU, up to 400MHz frequency
Provides remote serial access over the Internet for industrial serial devices
10/100Mbps Ethernet port and support Auto MDI/MDIX
Built-in 15KV ESD serial port protection
Supports a wide industrial operating temperature,-40℃~85℃
Baud rate: 0.6~230.4 Kbps, and any baud rate setting, support None, Odd, Even, Mark, Space Parity bit
Flexible serial port data framing packing, which can satisfy user’s various demands for data packets segmentation
Versatile operation modes: TCP Server, TCP Client, UDP, HTTP client, Websocket server
Support virtual COM USR-VCOM(windows)
Modbus Ethernet-to-Serial support (Modbus/TCP, Modbus/RTU) for seamless integration of serial Modbus devices
Provides rich configuration access, including: Windows configuration tool, and Web Browser
Firmware upgrading via Web Browser and Windows configuration tool
High security via certificate verification SSL/TLS encryption for serial data transmission,HTTPS,TCPS,MQTTS
Support modbus RTU master,edge computing, modbus gateway,MQTT gateway
Support SNMP V1/V2c
Support on board I/O for analog input(2 AI), digital input(2 DI), digital output(SSR relay,2 DO), expandable with I/O modules
Support 2 RS485 serial port, the first one can also be RS232
Cloud support: MQTT via AWS IOT, Microsoft Azure, Thingsboard, Alibaba Cloud, EMQX, Tuya,Cumulocity IoT and so on
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General