RS485 to Ethernet Converter Industrial RS485 Serial Server TCP/IP to Serial Module Modbus MQTT Gateway, Support PoE Ethernet Port Power Supply, with Power and Signal Isolation Protection, Rail-

Overview
This is a RS485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc. The module features RS485 and Ethernet port(POE function), uses screw terminals for power input. Rail- flame-retardant case design, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring.

Specifications
1. Features
Product Type：Serial server, Modbus Gateway, MQTT Gateway
Basic Function：Bi-directional transparent data transmission between RS485 and Ethernet
Communication interface：RS485 port x 1, Ethernet port x 1
Power supply：6 ~ 36V DC screw terminal, or PoE port
Isolation Protection：Power isolation, Signal isolation

2. Communication
Ethernet：PoE network port, support IEEE 802.3af standard, 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection
Serial port：Isolated RS485

3. Serial specification
Baudrate：300 ~ 115200 bps
Parity bit：none, odd, even, mark, space
Data bit：5 ~ 9 bits
Flow control：N/A

4. Software
Protocol：ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
Configuration：host, web browser, device management functions library
Communication method：TCP/IP direct communication, VCOM
Operating mode：TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast

5. Environment requirement
Operating temperature：-40℃ ~ 85℃
Storage temperature：-45℃ ~ 125℃
Humidity range：5% ~ 95% relative humidity
Dimensions：L × W × H: 87 × 36 × 59 mm

User Manual and Development Resources
https://www.waveshare.com/wiki/RS485_TO_ETH_(B)?

Package Content
RS485 TO POE ETH (B) Module x1

• RS485 to RJ45 Ethernet bi-directional transparent data transmission serial server, with POE function and electrical isolation, support rail-, easy to combine multi rail-ed serial server together.
• Modbus gateway support, suitable for Modbus gridding upgrade, can be used with 3D configuration software. Multi communication modes, supports TCP server / TCP client / UDP mode / UDP multicast.
• MQTT/JSON to Modbus, more flexible conversion between different protocols. Multi hosts roll-polling support, different network devices will be identified and responsed respectively, no more crosstalk issue while communicating with multi network devices.
• User-defined heartbeat/registration packet, easy for cloud communication and device identification, NTP protocol support, getting network time info for serial output or data upload.
• Multi configuration methods, supports Web browser configuration, obtaining dynamic IP via DHCP, DNS protocol connected domain server address.