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The Trigger Menu
Creating a User Level
Using the Occurrence Counters
The occurrence counter is assigned to either the "Find" branch or the "else
on" branch. Whatever positive number you assign to the counter, the pattern
must be seen that number of times before the term becomes true.
It should be noted that in order to count occurrences of a pattern with a >
duration, the Upon Entry or Upon Exit selections should be used. In the
Until Exit mode, the occurrence counter is clocked at a 2 ns rate as long as
the resource is true, in effect acting like a duration counter.
If the "else on" branch becomes true before all specified occurrences of the
primary branch, the secondary "else on" branch is taken.
If you choose to use the occurrence counter in a sequence level, the timer is
not available in that level.
Example
The following statement assigns the Occurrence Counter to the primary
"Find" branch. Once the Occurrence Counter is assigned, a new assignment
field appears in the primary branch to set occurrences.
Occurrence Counter is assigned to the "Find" branch
Find patt1 3 time(s) then goto Trigger
4–23
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