Product description: RS485 to Ethernet converter with PoE - industrial TCP/IP serial port server - DIN rail - Waveshare 23273
The converter enables direct data transmission between the RS485 interface and an Ethernet (RJ45) network, supporting communication in TCP Server, TCP Client, UDP, and UDP Multicast modes. With PoE support and galvanic power and signal isolation , the converter guarantees reliability and security in harsh industrial environments. It supports Modbus RTU to MQTT or JSON conversion, making it an ideal solution for modern data acquisition systems and IoT applications.

Special features
- RS485 - Ethernet data transmission: enables bidirectional communication between the serial interface and the TCP/IP network
- Extensive support for communication protocols: compatibility with Modbus RTU, MQTT, JSON and HTTP (POST/GET)
- Ethernet port with PoE: IEEE 802.3af compliance simplifies installation and powering the device with a single cable
- Galvanic isolation: provides additional transmission security and protection against interference in industrial environments
- Flexible power supply: can be powered from 6V to 36V DC or directly via PoE port
- Robust and compact design: housing designed for DIN rail mounting, ideal for switchboards and control cabinets
- Support for multiple operating modes: TCP server, TCP client, UDP and multicast provide flexibility in system configuration
- 2kV surge protection: Increases the reliability and fault tolerance of the Ethernet port
- Easy setup: intuitive web panel and DHCP and DNS protocol support for easy integration with existing infrastructure
- Advanced networking features: multi-host support, registration packets, and heartbeat support for communication with cloud systems and IoT servers
Application in practice
The converter is ideal for industrial and automation applications such as:
- Remote reading of meters and sensors (Modbus RTU)
- Industrial SCADA and HMI systems
- Cloud integration (e.g. MQTT – Alibaba Cloud, Baidu Cloud, OneNet)
- Monitoring of technical infrastructure
- Intelligent building and measurement systems

Technical specifications of the converter
- Power supply: 6 V to 36 V DC (screw terminals) or PoE
- Serial interface: RS485 (isolated)
- Network port: Ethernet RJ45 10/100 Mbps with PoE support
- PoE standard: IEEE 802.3af
- Network protocols: TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS, MQTT
- Humidity: 5% to 95% RH (non-condensing)
- Configuration: via browser or management library
- Baudrate: from 300 to 115200 bps
- Operating temperature: -40°C to 85°C
- Mounting: DIN rail
- Dimensions: 106 x 36 x 58.6 mm

