Siemens 6ES7131-6BF00-0DA0 - Page 36

Counting operating mode (CNT)
4.2 Parameters/address space
Digital input module DI 8x24VDC HS (6ES7131‑6BF00‑0DA0)
36 Manual, 03/2015, A5E35243810-AA
Reaction to violation of a counting limit
Selection of the reaction to violation of the counter high limit in the upward direction or the
counter low limit in the downward direction:
● Stop counting:
After a counting limit is violated, the internal gate is closed. This stops the counting
process. The counter value is set to the opposite counting limit. To restart counting, you
must close and reopen the software/hardware gate.
● Continue counting:
After a counting limit is violated, the counter value is set to the opposite counting limit and
counting continues.
Edge selection
Selects the edge that is counted:
● At rising edge:
The respective counter counts all rising edges at the digital input.
● At falling edge:
The respective counter counts all falling edges at the digital input.
Note
If the "Reverse direction" option is selected in "Set function of DI" and the counting direction
in the process changes, the counting edge is automatically adjusted (opposi
te edges).
Count direction
Count direction selection:
● Up:
The respective counter counts up.
● Down:
The respective counter counts down.
Note
This parameter has no effect if the "Reverse direction" option is selected in "Set function of
DI".