Hello everyone, I'm starting to work with node-red in the field of building automation, I would have a need that should be solved with a function node, basically I have a home automation system (system A) with modbus ip connection, from there come the commands that must then be sent to a listening …

Is this the same issue as your other post? [image] Function filter General Sounds like you need to use the RBE node. It only allows a msg to pass if it has changed.

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dceejay 14 September 2020 12:28 3

Duplicate of Function filter
closing this thread.

Topic		Replies	Views
Function filter General	2	686	13 November 2020
Fire a message only once unless it changes General function-node	5	287	10 July 2023
Filter by change or x min General	16	269	23 April 2024
One node inputs output only if inputs are different General	11	287	26 September 2022
RBE Node for msg.payload Array General	9	1344	17 April 2020

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