Maximum Counting Speed Of Counter - Mitsubishi Electric 700 Series Programming Manual

3.10.2 Maximum counting speed of counter

The maximum counting speed of the counter is determined by the scan time, and the
counter can count only when the ON/OFF period of the input condition is longer than
the scan time.
Maximum counting speed Cmax
REMARKS
The duty n is a percent (%) ratio of ON/OFF period to (ON + OFF period) of the count input
signal.
When T1
When T1
Count input signal
100
T1
T2 n
T1 T2
T2
T2 n
T1 T2
ON
OFF
n 1
[times/s] n: Duty (%)
ts
100[%]
100[%]
T1 T2
Counters C
ts: Scan time [s]
3
85