With the use of the IoConfig_Globals.drivename.wCommunicationState errors that have a values > 1000 can occur.
These are often not immediately obvious, which errors are hidden behind it.
These numbers (>1000) come from the fact that in our state-machine, in a certain state an error has occurs.
Then the "known state +1000" is copied into wCommunicationState.
Thus it can be determined in which step/state the error has occurred.
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See also....