Instructions

175 ADAM-6000 User Manual
Chapter 8 Graphic Condition Logic (GCL)
Sequential Control (Turn On in Sequence and Remain On)
In this type of application, several digital outputs will be activated in sequence and
latch their values. In this example project, DO 0~DO 5 will sequentially be controlled
to change their status. The time chart for this application is shown in Figure 8.25.
Figure 8.25 Time Chart for Sequence Control
(Digital Outputs are Turned On in Sequence and Remain On)
In the example project, DI 0 is used as a trigger to start the sequential control action.
Therefore, when DI 0 becomes logic high (at T0), DO 0 will also become logic high
immediately at that point. Then, DO1~DO5 will sequentially be activated to logic high
after a specific time interval. You can decide the time interval for t1~t5 (they can be
unique values). In this example project, t1~t5 are all set to 5 s.
Six logic rules and one internal timer can be employed for this GCL application. In the
first logic rule, DI 0 is used to trigger Timer 0 and DO 0. Since the timer has been trig-
gered, a counter will start and DO 1~DO 5 will be activated after a specific amount of
time has elapsed. The GCL architecture is shown in Figure 8.26.
Figure 8.26 GCL Logic for Sequence Control (Turns On in Sequence and
Remains On)
Multiple Digital Inputs to Control One Digital Output (12 digital Inputs to 1 Digi-
tal Output)
In many applications, only when multiple digital inputs are logic high (i.e., all related
conditions are satisfied) will the digital output status become logic high. In this exam-
ple project, only when DI 0~DI 11 are all logic high at the same time does DO 0
become logic high. The time chart of this application is shown in Figure 8.27. The
green band area indicates the moment that all 12 digital inputs are logic high, at