SMC_ControlAxisByPos (FB)¶

FUNCTION_BLOCK SMC_ControlAxisByPos

The function block writes the set position fSetPosition to the drive structure Axis and monitors Axis for jumps. SMC_ControlAxisByPos is mostly used with CNC and an instance of the SMC_Interpolator.

InOut:

Scope	Name	Type	Initial	Comment
Inout	Axis	AXIS_REF_SM3		Reference to axis See also: AXIS_REF_SM3
Input	iStatus	SMC_INT_STATUS		Status of the instance of SMC_Interpolator
	bEnable	BOOL		TRUE: Starts execution
	bAvoidGaps	BOOL	TRUE	TRUE: Starts the monitoring of the position If the velocity exceeds the limit value which is set in AXIS_REF_SM3.fSWMaxVelocity and configured in the drive dialog with the Maximum Values setting, then the bStopIpo output is set. The axis is moved to the position with the values fGapVelocity, fGapAcceleration and fGapDeceleration. On reaching the set position, bStopIpo is set to FALSE.
	fSetPosition	LREAL		Set position of the axis in [u]. Typically connected to the output of the transformation block
	fGapVelocity	LREAL	1	Velocity for the bypassing of the jump in [u/s]
	fGapAcceleration	LREAL	1	Acceleration for the bypassing of the jump in [u/s2]
	fGapDeceleration	LREAL	1E+15	Deceleration for the bypassing of the jump in [u/s2] Note: Also used if bAvoidGaps is FALSE, for stopping when disabled
	fGapJerk	LREAL	1E+16	Jerk for the bypassing of the jump in [u/s3] Note: also used if bAvoidGaps is FALSE, for stopping when disabled
Output	bBusy	BOOL		TRUE: Function block operating
	bCommandAborted	BOOL		TRUE: Execution was interrupted by another function block instance operating on axis.
	bError	BOOL		TRUE: Error has occurred
	iErrorID	SMC_ERROR		Error identification
	bStopIpo	BOOL		TRUE: Jump in velocity or position occurred and adaptation to new position is running. If bStopIpo is connected to the EmergencyStop input of the SMC_Interpolator instance, the interpolator waits until the axis is correctly positioned. See also: SMC_ERROR