Read the input status of virtual ModbusRTU in Node Red

Hello friend,

I want to read out the input words of virtual ModbusRTU Master module in Node Red. However I have no good solution. Do you have some idea? Thank you!

Hi hikaru,

have look at Help Read Data Gateway Profinet Please!

At the last post you should replace "RevPiLED" with your word variable, e.g. "Input_Word_1"

Best regards
Johannes

Hi Johannes,

Thank you!
Your method works, but the return type is string in Node-red. Additionally I use function node(msg.payload = Number(msg.payload); return msg;) to convert the string value into number value, then the value can be calculated later.

Hello hikaru,

custom/manual return types is a already feature request, you can follow future progress here https://github.com/erminas/node-red-con ... /issues/13

Greetings,
Jonas