Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

Page: 128 / 788

94
Computing the Cycle Time
Section 2-7
2-7-3 Functions Related to the Cycle Time
Minimum Cycle Time
Set the minimum cycle time to a non-zero value to eliminate inconsistencies in
I/O responses. A minimum cycle time can be set in the PLC Setup between 1
and 32,000 ms in 1-ms increments.
This setting is effective only when the actual cycle time is shorter than the
minimum cycle time setting. If the actual cycle time is longer than the mini-
mum cycle time setting, the actual cycle time will remain unchanged.
PLC Setup
Watch Cycle Time
If the cycle time exceeds the watch (maximum) cycle time setting, the Cycle
Time Too Long Flag (A401.08) will be turned ON and PLC operation will be
stopped.
PLC Setup
Related Flags
Cycle Time
Monitoring
The maximum cycle time is stored in A262 and A263 and the present cycle
time is stored in A264 and A265 every cycle.
Minimum cycle time
(effective) Minimum cycle time
(effective) Minimum cycle time
(effective)
Actual cycle
time
Actual cycle
time
Actual cycle
time
Minimum cycle time
Actual cycle
time
Minimum cycle time
Actual cycle
time
Minimum cycle time (effective)
Actual cycle
time
Name Settings Default
Minimum cycle time 0000 to 7D00 hex
(1 to 32,000 ms in 1-ms incre-
ments) 0000 hex: Variable cycle time
Name Settings Default
Enable Watch Cycle
Time Setting 0: Default (1 s)
1: User setting 0000 hex: Watch cycle time of
1 s
Watch Cycle Time 001 to FA0: 10 to 40,000 ms
(10-ms increments)
Name Address Description
Cycle Time Too Long
Flag A401.08 Turns ON if the present cycle time exceeds the
Watch Cycle Time set in the PLC Setup.