MC_WriteMotionFunction

The MC_WriteMotionFunction function block can be used to write the data of a motion function into the NC. Either the complete function with all interpolation points or only a part can be written. First, the data are stored within the PLC in the structure described by CamTable.

The MC_SetCamOnlineChangeMode function block can be used to define when the data is transferred to the cam plate. If activation of the data is to be delayed until the master reaches a certain position, the system will initially queue the written data and activate them at the master position.

The Axis.Status.CamDataQueued (AXIS_REF) status flag can be used to check whether data have been queued, i.e. written but not yet activated.

Inputs

VAR_INPUT
   Execute    : BOOL;
   CamTableID : MC_CAM_ID;
   PointID    : MC_MotionFunctionPoint_ID;
   NumPoints  : UDINT; 
   CamTable   : MC_CAM_REF;
   Options    : ST_WriteMotionFunctionOptions;
END_VAR

Name	Type	Description
Execute	BOOL	The command is executed with a rising edge at Execute input.
CamTableID	MC_CAM_ID	ID of the loaded table.
PointID	MC_MotionFunctionPoint_ID	Point ID of the first point of the motion function to be read.
NumPoints	UDINT	Number of motion function points to be written.
CamTable	MC_CAM_REF	Reference to the table (structure). The start address of the table data structure (CamTable.pArray) indicates the first point to be written.
Options	ST_WriteMotionFunctionOptions	Data structure with additional options:
Options	ST_WriteMotionFunctionOptions	SynchronousAccess	Writing takes place via synchronous access without a time delay. Should only be used for applications that are extremely time-critical.

Outputs

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

Name	Type	Description
Done	BOOL	Becomes TRUE if the data have been read successfully.
Busy	BOOL	The Busy output becomes TRUE when the command is started with Execute and remains TRUE for as long as the command is processed. If Busy becomes FALSE again, the function block is ready for a new order. At the same time one of the outputs, Done or Error, is set.
Error	BOOL	Becomes TRUE as soon as an error occurs.
ErrorID	UDINT	If the error output is set, this parameter supplies the error number.