USR-TCP232-410S — Modbus Serial to Ethernet Converter

Overview
The USR-TCP232-410S is an industrial-grade Modbus Serial to Ethernet converter from USR IoT Technology. Designed to connect legacy serial devices (RS232 and RS485) directly to TCP/IP networks, it enables remote data transmission, control, and integration into modern automation systems.

Key Features

• Dual Serial Ports: One RS232 and one RS485 port that can operate simultaneously.

• Modbus Gateway Support: Built‑in conversion between Modbus RTU and Modbus TCP protocols for seamless PLC/SCADA integration.

• Edge Computing Capability: On‑device processing and reporting in JSON format, minimizing server load.

• Secure Communication: SSL/TLS encryption across HTTP, MQTT, and TCP client modes to protect data in transit.

• IoT Connectivity: Native MQTT support for easy connection to cloud platforms and IoT systems.

• Rich Protocol Support: TCP/UDP/MQTT/HTTP and DHCP for flexible network integration.

• Configurable Interface: Web‑based interface, software tools, and AT commands for simple setup and customization.

• Industrial‑Grade Design: Wide‑range DC power (9–36 V), metal housing, and operation from ‑40 ℃ to +85 ℃.

How It Works
The USR‑TCP232‑410S acts as a serial device server, enabling bidirectional transparent data transfer between serial equipment and Ethernet networks. This allows traditional Modbus devices to communicate over LAN/WAN, achieve remote monitoring, and connect with automation platforms without protocol mismatch issues.

Industrial Applications

• Remote data acquisition and control in PLC/SCADA systems

• Smart building systems and energy monitoring

• Industrial automation and process control

• IoT sensor integration and cloud data reporting