How to merge arrays from two Modbus fc 1 and fc 3


Almost always the simplest solution in cases like this is to perform the operations in series rather than parallel. Perform on of the modbus operations and then move the results to a msg property (msg.firstGet for example), then do the second get and you should still have the previous data available in msg.firstGet.

Do you have an example for me to see? I'm new in node red. thx

It is pretty much as colin said dont do parallel operations, do everything in series...

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