FUNCTION_BLOCK GetBusError EXTENDS CBM.ETrigA
If IBus.GetBusState returns BUS_STATE.ERROR this function block returns the associated bus error code. The error codes are fieldbus specific and will be defined by the associated communication stack.
Info
This feature may not be supported by all fieldbus drivers. eError will return ERROR.NOT_SUPPORTED if not supported.
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InOut:
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Scope
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Name
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Type
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Comment
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Inherited from
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Input
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xExecute
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BOOL
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Rising edge: Action starts
Falling edge: Resets outputs
If a falling edge occurs before the function block has completed its action, the outputs operate in the usual manner and are only reset if either the action is completed or in the event of an error. In this case, the corresponding output values (xDone, xError, iError) are present at the outputs for exactly one cycle.
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ETrigA
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xAbort
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BOOL
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TRUE: Action is stopped immediately and all outputs are reset to their initial values.
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ETrigA
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Output
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xDone
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BOOL
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TRUE: Action successfully completed
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ETrigA
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xBusy
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BOOL
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TRUE: Function block active
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ETrigA
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xError
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BOOL
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TRUE: Error occurred, function block aborts action
FALSE: No error
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ETrigA
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xAborted
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BOOL
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TRUE : Action aborted by user
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ETrigA
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Input
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itfNode
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INode
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bus node
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Output
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eError
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ERROR
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operation error code
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einBusError
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ERROR_INFO
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bus error code
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