MC_WriteDigitalOutput_BkPlcMc (from V3.0)

The function block determines the state of a digital output of a cam controller.

Inputs

VAR_INPUT
    Execute:        BOOL;
    OutputNumber:   INT;
    Value:          BOOL;
END_VAR

Name	Type	Description
Execute	BOOL	A rising edge at this input triggers an update of the state.
OutputNumber	INT	The number of the output to be determined.
Value	BOOL	The state of the digital output.

Inputs/outputs

VAR_INOUT
    Output:     OUTPUT_REF_BkPlcMc;
END_VAR

Name	Type	Description
Output	OUTPUT_REF_BkPlcMc	Here, the address of a variable of type OUTPUT_REF_BkPlcMc should be transferred.

Outputs

VAR_OUTPUT
    Done:       BOOL;
    Busy:       BOOL;
    Error:      BOOL;
    ErrorID:    UDINT;
END_VAR

Name	Type	Description
Done	BOOL	This indicates successful determination of the state.
Busy	BOOL	This output is TRUE while the command is being processed.
Error	BOOL	The occurrence of an error is indicated here.
ErrorID	UDINT	An encoded indication of the cause of the error is provided here.

Behavior of the function block

A rising edge at Execute causes the function block to check the transferred parameters. During this process, a problem may be detected and reported:

If the value of OutputNumber is not within the permissible range [0..31], the response is Error with ErrorID:=dwTcHydErrCdIllegalOutputNumber.

If these checks could be performed without problems, the state of the digital output is defined according to the value of Value, and Done is reported.

A falling edge at Execute clears all the pending output signals.