MC_CamOut_BkPlcMc (from V3.0)

The function block releases a cam plate coupling between two axes, which was started through an MC_CamIn_BkPlcMc function block.

Inputs

VAR_INPUT
    Execute:        BOOL;
ND_VAR

Name	Type	Description
Execute	BOOL	A rising edge at this input starts the coupling.

Inputs/outputs

VAR_INOUT
    Slave:          Axis_Ref_BkPlcMc;
END_VAR

Name	Type	Description
Slave	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	This indicates successful processing of the command.
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 Execute the function block checks the transferred axis interface. A number of problems can be detected and reported during this process:

If the pointer pStAxParams in Axis_Ref_BkPlcMc is not initialized, the system responds with Error and ErrorID:=dwTcHydErrCdPtrPlcMc.
If the pointer pStAxParams in Axis_Ref_BkPlcMc is not initialized, the system responds with Error and ErrorID:=dwTcHydErrCdPtrMcPlc.
If the axis is not coupled, the function block responds with Done, without further checks or activities.
If the current set velocity of the axis is smaller than the velocity specified by pStAxParams.fCreepSpeed, the axis immediately assumes McState_Standstill and dissipates the residual velocity. Done is indicated, and no further checks or activities take place.

If these checks could be performed without problem and Done is not already indicated for one of the reasons mentioned, the motion controlled by the cam plate coupling is converted to a continuous motion with the same velocity and direction, which is independent of the master. Done is indicated if this conversion was executed successfully, otherwise the system responds with Error and ErrorID:=error code.

	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.