SMC_Logical_Axis (FB)¶

FUNCTION_BLOCK SMC_Logical_Axis

the need to add a logical axis to the device tree.

Use the output variable Axis of type AXIS_REF_LOGICAL_SM3 instead of

a logical axis.

If the function block is restarted, the logical axis is reinitialized. The master axis can be changed by restarting the function block.

Note that instances of this function block must not be assigned to other instances of the same function block. If you create your own function block containing this function block, it is recommended to add the attribute ‘no_assign’ to your function block as well.

InOut:

Scope	Name	Type	Initial	Comment
Input	Execute	BOOL		Starts the execution of the function block.
	wDriveID	WORD	1	Identifier of the logical drive.
	iMovementType	SMC_AXIS_TYPE	SMC_AXIS_TYPE.modulo	The type (finite or modulo) of axis.
	fPositionPeriod	LREAL	360.0	Length of period for modulo drives in technical units [u].
	eValueReference	SMC_ValueSelect	actual	Master reference value.
	usiFilterDepthPosition	LREAL		Number of cycles the position value is averaged over.
	usiFilterDepthVelocity	LREAL		Number of cycles the velocity value is averaged over.
	fTimeShiftCycles	LREAL	3	Time shift relative to master values in cycles.
	RealAxis	REFERENCE TO AXIS_REF_SM3		The real master axis.
Output	Initialized	BOOL		The logical axis is intialized and can be used.
	InSteadyState	BOOL		The filter of the logical axis is intialized. InSteadyState implies Initialized.
	Error	BOOL		There is an error.
	Axis	AXIS_REF_LOGICAL_SM3		The logical axis.