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2. Prog rammi ng Con cep ts
M N050 03003E F or m ore info rm ati on vi sit:
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2-47
M1260=OFF
C240 is general U/D high-speed counter.
M1260=ON
It is Global reset for C235~C239.
Counting mode selection
The high-speed counter uses special D1022 in 2-phase inputs counting mode to select double
frequency mode. D1022 content will be loaded in at the first scan time when the ELC switches from
STOP to RUN.
D1022
Functions
D1022
Double frequency setting of counter counting method
D1022=K1
Normal frequency mode
D1022=K2
Double frequency mode (factory setting)
D1022=K4
Four times frequency mode
Double frequency mode (
↑
,
↓
means the action of counting)
Counting
mode
Wave for counting mode
1 (no
rmal
freque
ncy)
A-phase
B-phase
counting up
counting down
2 (dou
ble fre
quen
cy)
B-phase
counting up
counting down
A-phase
2-
phase
inputs
4 (four time
s frequ
en
cy)
A-phase
B-phase
counting up
counting down
ELC-PV:
ELC-PV supports high speed counters. C235 ~ C240 are program-interruption 1-phase high
speed counter with a total bandwidth of 20kHz, can be used alone with a counting frequency of up
to 10kHz. C241 ~ C254 are hardware high speed counter (HHSC). There are four HHSC in ELC-
Содержание ELC-PB
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