Advantech ADAM-6050 18-Channel Isolated Digital I/O Modbus TCP Module ADAM-6050-BE Scheda Tecnica

9.

DI Event Trigger (Only Occurs Once)

We can simply use GCL to perform Event trigger. For this kind of appli-
cation, a DI channel is used to trigger some action. So, the input condition 
of GCL logic rule will be if the DI value is logic True, and output of the 
rule can be some desired action, such as sending remote message. When 
the DI value becomes logic True, the input condition is satisfied. The 
GCL logic rule will send message continuously until the DI value backs 
to logic False. However, it is not what we plan. (We don't want the mes-
sage is sent out continuously. Instead, we want the message will only be 
sent once at the first moment that the condition is satisfied.)
This kind of application can be simply achieved by using one counter 
input channel. You can refer to figure 7.39 below. Select local counter 
input channel (DI_Counter) in the Input condition for one logic rule. 
There are two output used for the same logic rule, one is reset the counter 
input channel, and another is the desired action you want. Then, when the 
counter input channel detect DI signal, the condition is satisfied and the 
desired action will be done. At the same time, the GCL rule reset the 
counter input channel. So the desired action will only be executed once. 

The true image of configuration of GCL logic rule in ADAM.NET Utility 
can be shown by Figure 7.40 below. (Here, the desired action is to send 
remote message.)

AND

DI_Counter Reset

If DI_Counter ≧ 1

Desired Action