MQTT ---> S7 PLC (node-red-contrib-s7comm)

General
2

Solved!

The issue was the format in which the MQTT message was split and sent to the PLC. S7 PLC requires the message as a javascript object within an array.

The important line was msg.payload = json.stringify(data);

Previously I wasn't changing the payload to a json string properly before it flowed through the json node to convert to javascript object.

image
image.png3084×1370 316 KB

Debug window showing correct format of message.

**image **