USR-N540-H7 Serial to Ethernet Converter | 4-Port Industrial Serial Device Server | USR IoT

USR-N540-H7 Serial to Ethernet Converter | 4-Port Serial to IP Converter | USR IOT

The USR-N540-H7 is a high-performance 4-port Serial to Ethernet Converter that enables bi-directional transparent data transmission between RS232/RS485/RS422 serial devices and IP networks. Built with an industrial-grade design and reliable TI Cortex-M4 core, it ensures stable, secure, and continuous connectivity for mission-critical applications in industrial automation, traffic systems, and unattended equipment.

Key Features:

• 4 independent serial ports (RS232/RS485/RS422 3-in-1) with 10/100M adaptive Ethernet interface.

• Wide voltage input: DC 9~36V with reverse polarity protection.

• Multiple work modes: TCP Server, TCP Client, UDP, HTTPS Client, and Virtual COM.

• Modbus RTU ↔ Modbus TCP protocol conversion for industrial integration.

• Flow control support: CTS/RTS, XON/XOFF.

• Flexible configuration: Web Server, Windows Utility, and AT Commands.

• Industrial-grade protection:

  • ESD Protection: Air ±15KV, Contact ±8KV.

  • EFT Protection: Surge ±4KV, Pulse Group 1.5KV.

  • Hardware watchdog for 24/7 stability.

Work Modes:

• TCP Server/Client – Transparent transmission between serial devices and TCP applications.

• UDP Mode – Efficient data transmission with automatic reconnection.

• HTTPS Client – Secure data transfer to remote servers.

• WebSocket Mode – Real-time data display and bi-directional communication via HTML5.

Applications:

• Unattended weighing systems

• Traffic monitoring & control

• Industrial automation & SCADA systems

The USR-N540-H7 Serial to Ethernet Converter is the ideal choice for industries requiring multi-port serial connectivity, secure IP networking, and reliable data communication across demanding environments.