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Sampling Mode
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2
3
T1
T2
1
3
T1
T2
Sampling time
Word n + 1
1
0
1
0
1
0
Control input IN1 (start)
External or internal
(word n, bit 03)
Sampling time
(word n+1)
SET TIME
(word n, bit 1)
Counting flag
(word n+4, bit 00)
Current counter value
(words n+7 and n+6)
1, 2, 3... 1.
The sampling time is set from word n+1 before starting.
2.
Counting starts from 0 on the rising edge of IN1. After expiration of the
sampling time, the count stops and the counter value is retained until
the next IN1 signal.
3.
When SET DATA is turned ON while the counting flag is ON, the new
sampling time is set after completion of the counting operation and used
for the next counting operation. No external outputs are supported by
the sampling mode.
Note Set up the system so that control input IN1 turns ON after setting the sam-
pling time has been completed. The following is an example for internal con-
trol input 1.
Scan
Sampling time
Setting of the
sampling time
Internal control
input 1
Counting flag
Current count value
T
Sampling time
T
ON
OFF
ON
OFF
ON
OFF
Scan
Scan
Gate, Latch, and Sampling Modes
Section 4-4
Содержание SYSMAC C200H-CT001-V1
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Страница 3: ...C200H CT001 V1 CT002 High speed Counter Units Operation Manual Revised September 2000...
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