Command PositionKnown :

Checks whether the physical position of axis argin is known.

PositionKnown Definition
Input Argument	Tango::DEV_LONG	axis index
Output Argument	Tango::DEV_BOOLEAN	false : position not known true: position known
DisplayLevel	OPERATOR	..
Inherited	false	..
Abstract	false	..
Polling Period	Not polled	..
Command NOT allowed for	FAULT	..