Omron CJ1W-CT021 Operation Manual page 91

Output Control
3.2-kHz
pulse
Counter Value matches
Lower Limit (falls within
range)
the Range Data. However, the comparison does not stop for other
Counters.
Set the Range Data considering the time when the comparison is stopped.
For example, for the Range table shown in the following diagram, approxi-
mately 4.8 counts occur during 1.5 ms when a 3.2 kHz pulse is input. This
means that comparison does not occur for Counter Values 101, 102, 103,
and 104. During this period, the Output set under the Output Pattern does
not turn ON even if the Counter Value is within the Range Data range.
Comparison starts again after this 1.5 ms has elapsed.
100 101
Upper Range
Limit
Lower Range
Limit
Upper Range
Limit
Lower Range
Limit
Comparison stops for 1.5 ms
During this period, the output set under the output
pattern will not be turned ON even if the value falls
within the Range Data range.
•
Comparison Stoppage When IOWR and IORD-instructions Executed
Comparison is stopped during the execution of IOWR/IORD-instructions
and remains stopped until the processing of the instruction has been com-
pleted. The Data Transfer Busy bit is ON during this time.
This stopping of comparison during the execution of IOWR/IORD-instruc-
tions affects Counter comparisons for all counters.
Set the Range Data considering that comparisons are stopped by execution
of IOWR/IORD-instructions.
Refer to Appendix E "IORF and IOWR/IORD-instruction Execution Times" for
information on execution times for IOWR/IORD-instructions.
102 103
Range Data 0
104
100
Range Data 1
103
101
Range Data 2
Upper Range
Limit
Lower Range
Limit
104 105
105
102
Section 3-5
Counter Value
71