Hello Everyone, I am new to node-red and learning about it using internet. I have found various information about siemens PLC - node red communication by using S7 comm & modbus TCP nodes but Is it possible to use tcp in/ tcp out/tcp request nodes for Siemens PLC communication? I am using TSEND_C …

[ { "id": "859a3b1.9af2bc8", "type": "tcp request", "z": "543af69d.409c98", "server": "localhost", "port": "1880", "out": "immed", "splitc": " ", "name": "", "x": 490, "y": 140, "wires": [ [ …

Hello, the port that you are listening on in node-red should be the same as the port you configured in the PLC connection. You look to have set this to 1880 where as it should be what you have set up in the plc (from pic this is 2000)

I have a question, why don´t you simply use the s7 node , as you mentioned above?

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Siemens PLC communication using TCP IP node

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knolleary 15 May 2020 16:55 2

@RAW I have deleted the other topic you started. Please repost the flow here following the guide here: How to share code or flow json

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Siemens PLC communication using TCP IP node

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