4 count input method, Visual kv series – KEYENCE Visual KV Series User Manual
Page 236
4.3 Setting and Operation of High-speed Counters
3-212
Visual KV
Series
4
Chapter 4 High-speed Counters
4.3.4
Count Input Method
Select the input source for the high-speed counter.
When using an internal clock as input
Three types of internal clocks are provided: 1 µs, 10 µs, and 100 µs.
Set the desired internal clock with a special utility relay.
When using external inputs as count inputs
Set special utility relays as follows:
■ Operation mode
The counting method can be selected from the following when external inputs are
used.
The ring counter function is available for each counting method.
➮ For more about the ring counter, refer to "4.4.4 Ring Counter Function" (p. 3-225).
■ Types of operation modes
No multiplication mode (single-phase input)
Counts up at the rising edge of phase A while phase B is OFF.
Counts down at the rising edge of phase A while phase B is ON.
•
With direction judgement (Special utility relay 2407: OFF)
•
Without direction judgement (Special utility relay 2407: ON)
Phase B input can be ignored by turning ON special utility relay 2407 (for CTH0) or
2415 (for CTH1).
0006
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2
3
4
5
6
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ON
OFF
ON
(Counter value)
(Phase A)
(Phase B)
KVNKA Chap 04_1.p65
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