MELSEC-A
3. SPECIFICATIONS
3 - 3
*Counting speed is influenced by pulse rise time and fall time. Countable speeds
are as follows.
Note that counting of a pulse having long rise and fall times may result in
miscounting.
Counting Speed
Setting Switch
HIGH LOW
tt
Rise/fall time
1-phase
input
2-phase
input
1-phase
input
2-phase
input
t=2µs or less 200kPPS 200kPPS 10kPPS 7kPPS
t=25µs or less 10kPPS 10kPPS 1kPPS 700PPS
t=500µs —— —— 500PPS 250PPS
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