# Nodered Modbus TCP Maico KWL

**URL:** <https://discourse.nodered.org/t/nodered-modbus-tcp-maico-kwl/59283>\
**Category:** Industrial\
**Created:** [3 March 2022 09:53 UTC](https://discourse.nodered.org/t/nodered-modbus-tcp-maico-kwl/59283 "2022-03-03T09:53:42Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![marco1990](https://avatars.discourse-cdn.com/v4/letter/m/58956e/32.png) [@marco1990](https://discourse.nodered.org/u/marco1990)\
**Post date:** [3 March 2022 09:53 UTC](https://discourse.nodered.org/t/nodered-modbus-tcp-maico-kwl/59283/1 "2022-03-03T09:53:42Z")

</div>

Hello,

I would read and write my Maico KWL. The "Lüftungsanlage" is created and connected.

I would write "Stoßlüftung " to on but it did not work. The payload 1 send but nothing do.

```auto
[{"id":"c8bb1d688921ebde","type":"tab","label":"Flow 6","disabled":false,"info":"","env":[]},{"id":"b0f9055fda3e114e","type":"modbus-write","z":"c8bb1d688921ebde","name":"Stoßlüften","showStatusActivities":false,"showErrors":false,"unitid":"1","dataType":"MHoldingRegisters","adr":"551","quantity":"1","server":"94c8f3345386013a","emptyMsgOnFail":false,"keepMsgProperties":false,"x":710,"y":160,"wires":[[],[]]},{"id":"74a417e9d35449d2","type":"function","z":"c8bb1d688921ebde","name":"aktiv","func":"return {payload: '1'};","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":410,"y":160,"wires":[["b0f9055fda3e114e"]]},{"id":"d514107501930212","type":"function","z":"c8bb1d688921ebde","name":"deaktivieren","func":"return {payload: '0'};","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":430,"y":100,"wires":[["b0f9055fda3e114e"]]},{"id":"949d072893028b8b","type":"inject","z":"c8bb1d688921ebde","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":160,"y":100,"wires":[["d514107501930212"]]},{"id":"4e022121c8bd9bcb","type":"inject","z":"c8bb1d688921ebde","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":160,"y":160,"wires":[["74a417e9d35449d2"]]},{"id":"94c8f3345386013a","type":"modbus-client","name":"Lüftungsanlage","clienttype":"tcp","bufferCommands":true,"stateLogEnabled":false,"queueLogEnabled":false,"tcpHost":"192.168.31.171","tcpPort":"502","tcpType":"TELNET","serialPort":"/dev/ttyUSB","serialType":"RTU-BUFFERD","serialBaudrate":"9600","serialDatabits":"8","serialStopbits":"1","serialParity":"none","serialConnectionDelay":"100","serialAsciiResponseStartDelimiter":"0x3A","unit_id":"1","commandDelay":"1","clientTimeout":"1000","reconnectOnTimeout":true,"reconnectTimeout":"2000","parallelUnitIdsAllowed":true}]

```

```
551 Stoßlüftung	03-Read Holding Register(4x)	06-Write Single Register	16-Write Multiple Register	1	uint16	0	1	0	1 0=inaktiv; 1=aktiv
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [2 May 2022 09:53 UTC](https://discourse.nodered.org/t/nodered-modbus-tcp-maico-kwl/59283/2 "2022-05-02T09:53:51Z")

</div>

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