Command GetReferencePosition :

input: axis no.
ouput: reference position in nm or udeg

GetReferencePosition Definition
Input Argument	Tango::DEV_LONG
Output Argument	Tango::DEV_DOUBLE
DisplayLevel	OPERATOR	..
Inherited	false	..
Abstract	false	..
Polling Period	Not polled	..
Command allowed for	All states	..