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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.		'''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.

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			[[File:JWTech-Wiki-preview-844e4df105a7789cf18ca2766e0efa603b85e7d7ce14de2a8f4731bb82cefede.jpg\|thumb\|right\|320px\|alt=Product view Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional)\|Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional)]]
			'''Catalog location in the JW Tech Shop:'''
			* WSAL20978 – Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional): Other products
			* WSAL23273 – Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional): IoT / Communication → Wired Comm / Converter → Ethernet TO UART / RS232 / RS485
			* WSAL30303 – Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional): Other products
			<!-- JWTECH-WIKI-MEDIA-CATALOG:END -->

	== Summary ==		== Summary ==

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

2026-08-29T21:05:46Z

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 Waveshare RS485 TO ETH (C) is an industrial serial server enabling bidirectional transparent data transmission between an isolated RS485 port and an RJ45 Ethernet port. It supports TCP/IP, Modbus gateway functions, MQTT, and configuration via a web browser or the VirCom software.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL20978 WSAL20978 – Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional)]
* [https://shop.jw-tech.eu/p/WSAL23273 WSAL23273 – Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional)]
* [https://shop.jw-tech.eu/p/WSAL30303 WSAL30303 – Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional)]

== Technical overview ==
* Power supply via screw terminal: 6–36 V DC; signal and power isolation present.
* Serial parameters: baud rate 300–115200 bps, 5–9 data bits, parity none/even/odd/mark/space; no flow control.
* Ethernet port: 10/100M self-adaptive RJ45 with 2 kV surge protection.
* Operating modes: TCP server (up to 30 connections), TCP client (up to 7 destination IPs, coexists with TCP server), UDP and UDP multicast.
* Modbus gateway: converts Modbus RTU to Modbus TCP; supports storage and non-storage modes for automatic data collection and storage.
* MQTT gateway and HTTP POST/GET data delivery to cloud systems; NTP time synchronization for timestamped protocol content.
* Web configuration via browser, DHCP for dynamic IP assignment, DNS resolution of domain addresses.
* Dimensions: 87 × 36 × 59 mm; DIN-rail mounting supported.
* Application cases: IoT gateway for RS485 sensors, electricity metering/energy monitoring, remote PLC maintenance, networking access-control systems.

== Notes and version constraints ==
* The source contains placeholders such as {{{name3}}} and {{{userDefinedInfo}}}, indicating incomplete templates; exact product designations should be manually verified before publication.
* The source mentions both versions (C and B); this guide focuses on the C version, but some test sections explicitly refer to the B version – the exact hardware wiring differences should be confirmed against the physical device.
* The '10/100M self-adaptive' specification is clarified in the FAQ as actually being limited to 10 Mbit/s serial throughput; this should be stated more clearly in the wiki to avoid misunderstandings about effective throughput limits.
* The source does not contain exact command strings or configuration commands; therefore the 'commands' field is left empty. If specific CLI or API commands are needed, they must be supplemented from official documentation.

== Source and revision record ==
* [https://www.waveshare.com/wiki/RS485_TO_ETH_(C) RS485 TO ETH (C) - Waveshare Wiki]
* Source revision: 104219
* Captured: 2026-08-29T08:14:58+00:00
* SHA-256: <code>7e739ed4a8467955ae0447f37a9cd6f14310914a1fcb584ddd3383db5c64ad53</code>

WSAL20978 – RS485 TO ETH (C)/en - Versionsgeschichte

JWTechPublisher: Freigegebenes Produktbild und Katalogposition ergänzt

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