User Manual Section 5
GFK-2958L May 2021
Detailed Description of I/O Modules 216
The counter is activated and deactivated using an internal gate. If the hardware gate (HW
gate) is deactivated in the parameters, the internal gate is identical to the software gate (SW
gate).
With activated hardware gate, there is a logic AND connection of SW gate and HW gate, so
that the gate functions operate exclusively on the HW gate. In this case, opening and closing
of the SW gate has an interrupting effect only.
The software gate is activated using a 0-1 edge at the bit Set SW gate in the control word
and deactivated with a 0-1 edge at the bit Reset SW gate in the control word (refer to the
table Process Data Outputs).
Counting Behavior: Cancel/Interrupt Counting
You can parameterize the counting behavior after a new gate start: Using Interrupt
counting, the counter continues from the last counting value. Using Cancel counting,
counting starts again from the load value.
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