B&B Electronics ADAM-6066 - Manual - Manual (Page 223)

213 Chapter 7
Figure 7.36: GCL Logic for Falling Edge
8. Sequential Control (Turn On and Off in Sequence Continuously)
This type of automation application is similar to the 3rd application we
have introduced. They are both sequential control applications. For exam-
ple 3, DO channel will keep its value after it is turned on. In example 8
here, after DO channel is turned on, it will be turned off after a specific
time. You can see the time chart for this application by Figure 7.37 below.
There is one time base needed to control the digital output sequential
action. In this example, the period of the time base to turn off one DO and
turn on the next-door DO is 1 second.
Figure 7.37: Time Chart for Sequence Control
(Turn On and Off in Sequence Continuously)
AND
AND Start Timer 0
If Timer 0 ≧ 1 s Set Flag 0 = True AND
If DI 0 = False
If DI 0 = False
If Flag 0 = False
Set DO 0 = True
Rule 1
Rule 2
Rule 3
DO 0
DO 1
DO 2
DO 3
DO 4
DO 5
Time (Second)
Start 1 2 3 4 5 7 8 9 10 11 6 12
Time
Base