Keyence Visual KV Series Bedienungsanleitung Seite 236

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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
0004
CTH0
0 123210
OFF
ON
OFF
ON
(Counter value)
(Phase A)
(Phase B)
edomno i t a r epO
0HTC1HTC
311241127042312241225142
noi taci lpi t lumoN
esahp - e l gn i s (
) t upn i
t nemegdu jno i t ce r i dh t iW
t upn iBesahpnehwput nuoC(
nwodt nuoc, FFOs i ] 7000 [6000
)NOnehw
FFOFFOFFOFFOFFOFFO
t nemegdu jno i t ce r i dt uoh t iW
gn i r ong iybput nuocs yaw l A(
) ] 7000 [6000t upn iBesahp
FFOFFONOFFOFFONO
lai tneref f idesahP
t upn i
2xNOFFO —NOFFO—
4xFFONO— FFONO—
doh t emes l up - 2
) nwodt nuoc: Besahp, put nuoc: AesahP(
NONO—NONO—
t upn i ) 1HTC(0050 ——————
0006
0004
CTH0
0 123456
OFF
ON
OFF
ON
(Counter value)
(Phase A)
(Phase B)
KVNKA Chap 04_1.p65 08.3.11, 0:06 PM212
Seitenansicht 235
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