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Cloud-Automation / node-modbus

Modbus TCP Client/Server implementation for Node.JS
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On Register Change Event #203

Closed wongjasont closed 6 years ago

wongjasont commented 6 years ago

I am implementing a jsmodbus simulator. One of the key features I'm implementing is that one particular register will depend its value from another. In lieu:

I am looking for an event that the server could listen to when a particular register has been updated; For example, client.writeMultipleRegisters(0, [1,2,3,4,5]) has been invoked; a particular event I'm expecting should be triggered, and it should be emitting this event with the address like:

server.onRegisterChange( (address, changedValues) => {
     // LOGIC HERE
})
stefanpoeter commented 6 years ago

You can listen to the pre/post events that the server emits for the single requests (unfortunatly a few events for certain fcs are missing) an check the memory areas related to the request and call your handler.

stefanpoeter commented 6 years ago

Added pre and post events to all available function codes. See branch v3.1.0-dev