I am trying to turn on a LED using node-red.
I have attached a LED to a PIN in PLC ( %Q0.0) .
I have made the configuration in modbus-write node accordingly as shown in screenshots below. but Its not working for some reason.
any help is appreciated.
with warm regards
This is the flow.
I have used a trigger node for sending high for 3 seconds.
This is the configuration for modbus-write node. ( Address 1 corresponds to %Qx0.0 in my openPLC )