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5
FUNCTIONS
5.3 Using the Counter Value Comparison Function
5.3.2 Using the continuous comparison function
5 - 21
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PROCEDURES AND
SETTINGS BEFORE
OPERATION
5
FUNCTIONS
6
UTILITY PACKAGE (GX
Configurator-CT)
7
PROGRAMMING
8
TROUBLESHOOTING
(4) Continuous comparison No.m point n setting interval
For the interval of the continuous comparison No.m point n setting, set the values to
satisfy the following conditions 1 and 2.
(a) Condition 1:
(b) Condition 2 (Applies only when the derating of external coincidence output is less
than 100% (Refer to Section 3.1.2)):
For example, when "Continuous comparison No.1 ON time setting" = 10[ms], "ON
ratio" = 50[%], "Input pulse speed" = 4[Mpps] = 4000000[pps], interval of the
continuous comparison No.1 point n setting (Un\G54 to 85) is the following.
(To satisfy the conditions 1 and 2, set the value of condition 2.)
Interval of the continuous comparison No.1 point n setting (Un\G54 to 85) 80000
POINT
"1ms" in the above condition 1 is a time for the comparison target change in the
QD64D2. Always set the sequence program to satisfy the condition 1.
When the count value is coincided within the time, the QD64D2 may not detect
the coincidence depending on the timing of the count value coincidence and the
comparison target change.
()
1000
1[ms]
Interval of (Continuous comparison
No.m point n setting)
(Continuous comparison No.m
ON time setting [ms])
Input pulse speed [pps]
(
)
1000
100[%]
Interval of (Continuous comparison
No.m point n setting)
Continuous comparison No.m
ON time setting [ms]
ON ratio [%]
Input pulse speed [pps]
(
)
4000000[pps]
1000
10[ms]
100[%]
50[%]
44000
80000
(
)
4000000[pps]
1000
10[ms] 1[ms]
Condition 1:
Interval of (Continuous comparison
No.1 point n setting (Un\G54 to 85))
Condition 2:
Interval of (Continuous comparison
No.1 point n setting (Un\G54 to 85))