Command WriteReadCmd :

General command to send a command to the device and get an answer.

WriteReadCmd Definition
Input Argument	Tango::DEV_STRING	Command to send
Output Argument	Tango::DEV_STRING	Answer from keithley
DisplayLevel	OPERATOR	..
Inherited	false	..
Abstract	false	..
Polling Period	Not polled	..
Command allowed for	All states	..