How to code a sequence as done in Yokogawa Sequence table in ABB 800xA?
I need to replicate/code a sequence as done in a Yokogawa sequence chart.
The basic conditions to be met are listed below:
1) The sequence conditions (in the table), each and every condition needs to be checked every one second.
2) The condition that decided the execution of each step is specified as "Output Only When Conditions Change State". ie. if on first scan condition is detected as true it executes the action, however on the second scan if condition remains true the action is not executed. The action is executed again only when the condition toggles On/Off again.
It is more or less like a cause and effect table except with restrictions on the execution requirement.
How can I implement the same in ABB 800xA?
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