MC_WriteParameter_BkPlcMc (from V3.0)

This function block writes the non-boolean parameters of an axis. The function block MC_WriteBoolParameter_BkPlcMc is available for boolean parameters.

Inputs

VAR_INPUT
    Enable:             BOOL;
    ParameterNumber:    INT;
    Value:              LREAL;
END_VAR

Name	Type	Description
Enable	BOOL	A write process is initiated by a rising edge at this input.
ParameterNumber	INT	This code number specifies the parameter that is to be read. Only named constants from E_TcMCParameter should be used.
Value	LREAL	The value of the parameter is to be provided here.

Inputs/outputs

VAR_INOUT
    Axis:       Axis_Ref_BkPlcMc;
END_VAR

Name	Type	Description
Axis	Axis_Ref_BkPlcMc	Here, the address of a variable of type Axis_Ref_BkPlcMc should be transferred.

Outputs

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

Name	Type	Description
Busy	BOOL	Indicates that a command is being processed.
Done	BOOL	Successful execution of the writing process is indicated here.
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

On a rising edge at Enable the function block checks the transferred axis interface. A number of problems can be detected and reported during this process:

If an unsupported value is given to ParameterNumber the system responds with Error and ErrorID:=dwTcHydErrCdNotSupport.

If these checks could be performed without problems Value is entered into the desired parameter value and Done is reported. If the parameter is changed recognizably in the process Axis_Ref_BkPlcMc.ST_TcHydAxRtData.bParamsUnsave is set.

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

	This function block requires no time for executing its tasks. The output Busy will never assume the value TRUE and only exists for compatibility reasons.