Command ReadCmd :

Read from device. Used one the device send string without asking.
(mode set with command COM).

ReadCmd Definition
Input Argument	Tango::DEV_VOID
Output Argument	Tango::DEV_STRING	Readout string
DisplayLevel	OPERATOR	..
Inherited	false	..
Abstract	false	..
Polling Period	Not polled	..
Command allowed for	All states	..