Omron CJ2 User Manual page 178

6 Troubleshooting
Cycle Time Too Long (Fatal Error)
Cycle Time Too Long
A cycle time too long error will occur if the PLC cycle time exceeds the setting for Watch Cycle Time
in the PLC Setup.
POWER
Lit. Not lit.
Error Causes and Remedies
Suspected cause of
error
An interrupt task with a
long processing time was
executed.
An incorrect value (an
extremely large number)
was set for the number of
repeats of FOR(512).
Peripheral Servicing Too Long
This error will occur if the peripheral servicing time exceeds 2.0 s.
POWER
Lit. Not lit.
Error Causes and Remedies
Suspected cause of
error
The event load was too
high.
6-12
CX-Program-
RUN ERR/ALM
Lit. Cycle Time
Error
Confirmation method
Check the Max. Interrupt
Task Processing Time
(A440)
Set up a trap in the ladder
program to monitor the
number of repeats.
CX-Program-
RUN ERR/ALM
Lit. Cycle Time
Error
Confirmation method
---
Error flag
mer display
A401.08
Remedy
Divide the interrupt task
into sections.
Correct the ladder pro-
gram.
Error flag
mer display
A405.15
Remedy
Reduce the event load.
CJ2 CPU Unit Hardware User's Manual
Error infor-
Error code
mation
809F None
Prevention of recur-
rence
Same as at the left.
Same as at the left.
Error infor-
Error code
mation
809F ---
Prevention of recur-
rence
Same as at the left.