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	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	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: