WSAL23626 – RS232 – 485 – 422 TO ETH (B)/en
Erscheinungsbild
Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Catalog location in the JW Tech Shop:
- WSAL23626 – Rail-Mount Serial Server, RS232/485/422 to RJ45 Ethernet Module, TCP/IP to serial, POE Function Optional: IoT / Communication → Wired Comm / Converter → Ethernet TO UART / RS232 / RS485
- WSAL24759 – Rail-Mount Serial Server, RS232/485/422 to RJ45 Ethernet Module, TCP/IP to serial, POE Function Optional: Other products
Summary
A rail-mount serial server that converts RS232/485/422 serial signals to TCP/IP via an RJ45 Ethernet module with optional PoE power. It functions as an IoT gateway and Modbus gateway for industrial data acquisition.
Related products at JW Tech
- WSAL23626 – Rail-Mount Serial Server, RS232/485/422 to RJ45 Ethernet Module, TCP/IP to serial, POE Function Optional
- WSAL24759 – Rail-Mount Serial Server, RS232/485/422 to RJ45 Ethernet Module, TCP/IP to serial, POE Function Optional
Technical overview
- Interfaces: 1 isolated RS232/485/422 port, 1 10/100 Mbit/s RJ45 Ethernet port with 2 kV surge protection; PoE (IEEE 802.3af) is only available on models labeled “POE”
- Power: screw terminals accepting DC 6–36 V or PoE through the network port; barrel connector outer diameter 5.5 mm, inner diameter 2.1 mm
- Serial parameters: baud rates 300–115200 bps, 5–9 data bits, parity none/odd/even/mark/space, no flow control
- Operating modes: TCP server (up to 30 concurrent connections), TCP client (up to 7 destination IPs), UDP, and UDP multicast; TCP client also supports a coexisting TCP server function
- Protocols: ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS; configuration via PC software, web browser, or device-management library
- Advanced features: Modbus RTU-to-TCP gateway (storage and non-storage modes), MQTT gateway, JSON-to-Modbus RTU/645 meter protocol, NTP time sync, custom heartbeat/registration packets, password authentication for TCP connections
- Dimensions: 88.7 × 64.5 × 24.2 mm; operating temperature −40 °C to 85 °C; humidity 5–95 % RH
Notes and version constraints
- The IP addresses mentioned in the source (e.g., 192.168.1.200, ports 4196 and 1111) are example values from a test environment, not fixed defaults of the device.
- The exact maximum current draw when powered directly at 24 V is not stated in the source; only a measurement at 12 V (0.96 A, 1.16 W) is given.
- Firmware-specific configuration files (e.g., the 2043 web interface) must be re-downloaded depending on installed firmware; details depend on the specific firmware version.
- RS485 wiring: short-distance links may work without 120 Ω termination resistors; multi-point long-distance buses should have 120 Ω resistors at both ends — exact placement must be verified on site.
- If the web configuration page will not open because another firmware (MQTT, Jetson Modbus) overwrote the config files, manually re-downloading the correct web file is required.
Source and revision record
- RS232/485/422 TO POE ETH (B) - Waveshare Wiki
- Source revision: 98321
- Captured: 2026-08-29T08:17:20+00:00
- SHA-256:
0bd9b12c4b3d467192bbbaba60f8acd0d5590d8de561c62a8e57e05a98050e76