Command SetStepRegister :

This command changes the internal value and the controller.
The unit position remains unchanged

SetStepRegister Definition
Input Argument	Tango::DEV_LONG	argin is stored in the internal and controller registers, if internal == controller. The motor unit position is unchanged. To resolve conflicts, write directly to the internal or controller registers.
Output Argument	Tango::DEV_LONG	Completion status
DisplayLevel	OPERATOR	..
Inherited	false	..
Abstract	false	..
Polling Period	Not polled	..
Command allowed for	All states	..