enter

Short summary

This method performs the given invoke only in the first cycle of the current step.

Parameters

Name	Type	Comment	Kind
invoke	CNM_CommandInterfaces.ISingleAttempt	command to execute	input
errorStep	DINT	step to proceed with in case of error	input

Code

Declaration

METHOD enter
VAR_INPUT
	(* command to execute *)
	invoke	:CNM_CommandInterfaces.ISingleAttempt;
	(* step to proceed with in case of error *)
	errorStep	:DINT := CNM_ReturnTypes.DefaultSteps.STEP.ERROR;
END_VAR

Implementation

THIS^.registeredEnter := TRUE;

RETURN (
	THIS^.executeStep 
	OR_ELSE THIS^.state <> CNM_ReturnTypes.SingleExecutionState.BUSY
);

IF (THIS^.isObjectNull(invoke) OR_ELSE (invoke.invoke() <> CNM_ReturnTypes.SingleExecutionResult.SUCCESS)) THEN
	THIS^.wasError := TRUE;
	THIS^.wasSuccess := FALSE;
	IF ((errorStep <> CNM_ReturnTypes.DefaultSteps.STEP.ERROR) 
		AND_THEN (errorStep <> THIS^.currentErrorStep)
	) THEN
		THIS^.currentErrorStep := errorStep;
	END_IF
END_IF