Festo CPX-P-8DE-N Series, Description

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3. Input module CPX-P-8DE-N-...
3-21
Festo P.BE-CPX-P-EA-EN en 1209NH English
Decremental counters Decremental counters count downwards starting from the
parameterised
upper limit value to the lower end of the
counting range (-32768).
Upon reaching the parameterised lower limit value, the bit
assigned to the relevant channel is set in byte 0 of the PII.
Upon reaching the counting range limit the counter is
stopped (minimum value = stop value).
Counter value Decremental counter
Upper limit value (example)
Lower limit value (example)
.
End of the counting range
10000
-32768
b)
0
a)
a)
Upon reaching the lower limit value, the corresponding bit is set in
byte 0 of the PII (
Tab. 3/9).
b)
Lower end of the counting range (minimum value = stop value)
Tab. 3/13: Possible operating methods of a counter