SMC_CheckForLimits (FB)¶

FUNCTION_BLOCK SMC_CheckForLimits

The function block checks whether a path leaves its specific, rectangular range.

Typically, poqDataOut of the previous function block is fed to the input poqDataIn. Subsequent function blocks should in turn use poqDataOut of this FB.

In contrast to other pre-processing function blocks, SMC_CheckForLimits works on the SMC_Outqueue-structure only, it doesn’t need a buffer and does not change the path (whose data is still held by the buffer of the previous function block).

InOut:

Scope	Name	Type	Initial	Comment
Input	bExecute	BOOL	FALSE	Execution starts on the rising edge.
	bAbort	BOOL	FALSE	TRUE: Aborts the processing of the function block
	poqDataIn	POINTER TO SMC_OUTQUEUE	SMC_NULL	Pointer to data of structure SMC_OUTQUEUE containing the path objects of type SMC_GEOINFO.
	wAddAxis	WORD		Bit field of the axes that will be tested X: Bit 0 Y: Bit 1 Z: Bit 2 A: Bit 3 B: Bit 4 C: Bit 5 P: Bit 6 Q: Bit 7 U: Bit 8 V: Bit 9 W: Bit 10 Example: 16#104 causes test of Z and U
	piMin	SMC_POSINFO		Lower edge of permissible range
	piMax	SMC_POSINFO		Upper edge of permissible range
	d3dCheckDistance	LREAL		In case of an 3D-object, the distance between the points that are checked. If 0, the number of points per object will be the object’s length divided by 10, plus start- and end-position.
	diMinNoPoints	DINT	5	Apart from start- and end-position, the minimal number of points per object that are checked.
	diMaxNoPoints	DINT	100	Analogously. -1 means that there is no maximum number.
Output	bBusy	BOOL	FALSE	TRUE: Function block in execution
	bError	BOOL	FALSE	TRUE: Error has occurred
	wErrorID	SMC_ERROR	SMC_NO_ERROR	Error identification
	wAxisOutOfLimits	WORD		Axes that have left the boundary
	iSourceLine_No	DINT	INVALID_LINE_NUMBER	Line number of the first object that has exceeded the limit. The line number is zero based and the value -1 shows that no line with exceeding limits was found.
	poqDataOut	POINTER TO SMC_OUTQUEUE	SMC_NULL	Pointer to data of structure SMC_OUTQUEUE containing the path elements of type SMC_GEOINFO that has been checked
	wLimitSwPositive	WORD		Axes that have exceeded the upper limit
	wLimitSwNegative	WORD		Axes that have exceeded the lower limit

Structure: