GE 90-30/20/Micro manual Word REQ

4

Example:

In the following example, when enabling output %M0125 transitions on, the mode and timer value of the system communications window is read. If the timer value is greater than or equal to 25 ms, the value is not changed. If it is less than 25 ms, the value is changed to 25 ms. In either case, when the rung completes execution the window is enabled. The parameter block for all three windows is at location %R5051. Since the mode and timer for the system communications window is the second value in the parameter block returned from the Read Window Values function (function #2), the location of the existing window time for the system communications window is in the low byte of %R5052.

%I0001%M0125 —— ——————————————————————————————————————————————————————————————(−)—

		_____		_____			_____
%M0125
—— ——— SVC_—————————— AND_—————————————————— AND_
		REQ		WORD			WORD
CONST —FNC				%R5052—I1	Q— %R5060		%R5052—I1 Q—%R50061
	0002
							CONST —I2
%R5051—PARM				CONST —I2			FF00
		_____		00FF _____			_____
		_____			_____			_____
%M0125
—— ——— LT				+———————————— OR		————————————————SVC_ —
		WORD			WORD			REQ_
%R5060—I1			Q———————+		%R5061—I1	Q— %R5052 CONST —FNC
							0004
CONST —I2					CONST —I2
	0025				0025		%R5052—PARM
		_____			_____			_____

4-142 Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K