
Description:
The Waveshare Industrial RS232/485/422 Serial Server & IoT Gateway is a powerful and versatile data acquisition device designed for demanding industrial environments. It integrates multiple functions in one compact unit, including a serial server, Modbus gateway, MQTT gateway, and RS232/485/422 to JSON converter, enabling seamless communication between serial devices and Ethernet networks.
Equipped with RS232/485/422 and RJ45 Ethernet interfaces and supporting PoE (Power over Ethernet), this module offers flexible power options through both PoE and screw terminals (5.5 mm outer / 2.1 mm inner diameter). Its rail-mount, space-saving enclosure ensures quick installation and reliable performance in control panels and factory settings.
Ideal for industrial data collection, this gateway can gather information from serial devices and sensors for local network monitoring or cloud data uploading, making it a cost-effective solution for smart factory and IoT applications.

Specification:
| Product | RS232 TO ETH (B) | RS232 TO POE ETH (B) |
|---|---|---|
| Product Type | Serial server, Modbus Gateway, MQTT Gateway | |
| Basic Function | Bi-directional transparent data transmission between RS232 and Ethernet | |
| Communication interface | RS232 port x 1, Ethernet port x 1 | |
| Power supply | 6 ~ 36V DC screw terminal | 6 ~ 36V DC screw terminal, or PoE port |
| Isolation Protection | Power isolation, Signal isolation | |
| Communication | ||
| Ethernet | common network port | PoE network port supports the IEEE 802.3af standard |
| 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection | ||
| Serial port | Isolated RS232 | |
| Serial specification | ||
| Baudrate | 300 ~ 115200 bps | |
| Parity bit | none, odd, even, mark, space | |
| Data bit | 5 ~ 9 bits | |
| Flow control | N/A | |
| 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 | |
| Others | ||
| Operating temperature | -40℃ ~ 85℃ | |
| Humidity range | 5% ~ 95% relative humidity | |
| Dimensions | L × W × H: 87 × 36 × 59 mm | |

Features:
- Support TCP server, TCP client, UDP mode, and UDP multicast. When used as a TCP client, it also supports TCP server functions. It supports 30 TCP connections as a TCP server and 7 destination IPs as a TCP client.
- The baud rate supports 1200~115200bps, the data bit supports 5~9 bits, and the parity bit can be in five ways: no parity, odd parity, even parity, mark, and space.
- Supports the function of sending the MAC address on device connection, which is convenient for cloud management of devices.
- Provides a secondary development kit DLL development library for searching and configuring devices on the computer side.
- Support Web browser configuration, support DHCP to obtain IP dynamically, and the DNS protocol to connect domain name server address.
- Support cloud remote search for devices, configure device parameters, and upgrade device programs.
- Support viewing the TCP connection status, and the data sending and receiving of the serial port. The virtual serial port also supports the monitoring function.
Product Interface:



Three Different Interfaces:
Onboard RS232 / 485 / 422 Interfaces, Suitable For More Application Scenarios
Ethernet Port To RS232/485/422:
The Ethernet port can send data to three serial ports at the same time

RS232 / 485 / 422 To Ethernet Port:
Only one of the RS232, RS485, and RS422 can send data to the Ethernet port at the same time

Useful Link:
Waveshare Industrial Rail-Mount Serial Server
Package Included:
1 x Waveshare Industrial Rail-Mount Serial Server