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•
Counting (up and down) starts at the load value, the entire counting range ist used.
•
Upon exceeding the upper or lower count limit, the counter jumps to the other count limit
respectively. The internal gate is automatically closed, the status bit Overflow performed or
Underflow performed is set and a process alarm will be triggered if it is parameterized.
•
To restart counting, the internal gate must be reopened. Depending on the parameters set,
counting continues from the current counting value (Interrupt counting) or it starts again from
the load value (Cancel counting).
One-time Counting/ Primary Direction Up
•
Up-counting starts at the load value.
•
If the parametrerised end value -1 is reached during counting in the positive direction, the
counter jumps back to the load value at the next positive count pulse. The internal gate is
automatically closed, the status bit End value reached is set and a process alarm will be
triggered if it is parameterized.
GFK-2958E
1-time Counting, Interrupted Counting
1-time Counting, Cancelled Counting
1-time Counting, Primary Direction Up
RSTi-EP User Manual
Chapter 5 Detailed Descriptions of I/O Modules
190
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