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Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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'''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.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL24962 WSAL24962 – 2-Ch RS485 to RJ45 Ethernet Serial Server, Dual channels RS485 independent operation, Dual Ethernet Ports]
* [https://shop.jw-tech.eu/p/WSAL24963 WSAL24963 – 2-Ch RS485 to RJ45 Ethernet Serial Server, Dual channels RS485 independent operation, Dual Ethernet Ports]

== 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:'''
<syntaxhighlight lang="text">
TCPClient:Waveshare_RS485_1
TCPClient:Waveshare_RS485_2
</syntaxhighlight>

== 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 ==
* [https://www.waveshare.com/wiki/2-CH_RS485_TO_ETH_(B) 2-CH RS485 TO ETH (B) - Waveshare Wiki]
* Source revision: 104009
* Captured: 2026-08-29T08:21:01+00:00
* SHA-256: <code>65a0e516827f59120adf06c019112bb05143ddefe1bdf1819a944cdc17d43d59</code>

WSAL24962 – 2-CH RS485 TO ETH (B)/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex