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WSAL24962 – 2-CH RS485 TO ETH (B)/en

Aus JW Tech Wiki

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.

Summary

The 2-channel RS485-to-Ethernet serial server (WSAL24962/WSAL24963) is an industrial data acquisition and IoT gateway. It features two independent RS485 channels and two Ethernet ports that can operate simultaneously. The device functions as a serial server, Modbus gateway, and MQTT gateway in a compact rail-mountable enclosure.

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Technical overview

  • Two RS485 channels operate independently, sending and receiving simultaneously without mutual interference.
  • Two RJ45 Ethernet ports; the PoE variant supports IEEE 802.3af.
  • Serial specification: baud rates 300 to 115200 bps, data bits 5–9, parity options: none, odd, even, mark, space.
  • Operating modes: TCP server (up to 30 connections), TCP client (up to 7 destination IPs, coexisting with TCP server), UDP, and UDP multicast.
  • Supported protocols: ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS.
  • Configuration via web browser, dynamic IP assignment through DHCP, and DNS for domain name resolution.
  • Modbus gateway function: conversion between Modbus RTU and Modbus TCP, with storage and non-storage modes available.
  • MQTT gateway, JSON-to-Modbus-RTU, HTTP POST/GET data transmission, and NTP time synchronization.
  • Environment: operating temperature -40 °C to 85 °C, humidity 5–95 % relative humidity.
  • Dimensions: 78 × 72.5 × 24.2 mm; power via DC jack (outer Ø 5.5 mm, inner Ø 2.1 mm) or screw terminal, 6–40 V DC.

Commands and examples – verify before use:  

TCPClient:Waveshare_RS485_1
TCPClient:Waveshare_RS485_2

Notes and version constraints

  • The IP addresses mentioned in the source (e.g., 192.168.1.200, 192.168.1.201, 192.168.1.254) are example values from the wiki; actual addresses depend on network configuration.
  • Factory reset is performed by holding the RESET button for 5 seconds; afterward, both channels' IP addresses change to 192.168.1.254 and device names become WSDEV0001.
  • If IP changes fail, a firmware issue may be present; upgrading to the latest firmware is recommended.
  • For PoE cascading, the first stage must first receive PoE power itself, because the controller only operates after detecting the detection voltage; direct cascading may fail.
  • Specific configuration parameters and firmware versions should be verified before deployment, as they may be version-sensitive.

Source and revision record

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