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Process data of the Automation Protocol device

The following figure shows an example of the process image with a Publisher variable and a Subscriber variable.

Process data of the Automation Protocol device 1:

  • "DevState":
    The Link state. Value 0 is the target state.
  • "DevCtrl":
    Used, among other things, to suppress individual Publishers. See chapter Suppress publisher.

 

Publisher

  • "CycleIdx":
    Must be incremented by the user for each transmission. See chapter Beckhoff network variables - Settings, section "Basic principles of Beckhoff network variables".
  • "VarData":
    The data to be transmitted.

 

Subscriber

  • "Quality":
    If a network variable arrives too late, "Quality" contains the measured delay. Unit: 100 µs.
    See also chapter Beckhoff network variables - Settings, section "Basic principles of Beckhoff network variables".
  • "CycleIndex":
    Subscriber-side counterpart to CycleIdx.
  • "VarData":
    Received data.