Omron NJ Series Troubleshooting Manual page 33

• Information
Events that are classified as information provide information that do not indicate errors.
You can change the event level for some events. Refer to the NJ-series CPU Unit Software User's Man-
ual (Cat. No. W501) for details on changing event levels. Refer to 3-1 Errors by Source in this manual to
see the events for which you can change the event level.
Operation for Each Level
The way that the Controller operates when an event occurs depends on the level of the Controller
event.
Event level
Item
Definition
Event examples
(Only a few exam-
ples are provided
here. Refer to Sec-
tion 3 Error Tables
for a list of all of
the errors.
PWR
(green)
Front-
panel
RUN
indica-
(green)
*1
tors
ERROR
(red)
NJ-series Troubleshooting Manual (W503)
Controller errors
Major fault Partial fault
level level
These errors These errors
are serious prevent all of
errors that pre- the control in a
vent control function mod-
operations for ule other than
the entire Con- PLC Function
troller. Module.
• I/O Bus • Motion Con-
Check Error trol Period
(PLC Func- Exceeded
tion Module) (Motion Con-
trol Function
Module)
• Communica-
tions Control-
ler Failure
(EtherCAT
Master Func-
tion Module)
Lit Lit
Not lit Lit
Lit Flashes at 1-s
intervals.
1 Overview of Errors
Minor fault
Observation
level
These errors These errors
prevent part of do not affect
the control system control
operations in a operations.
certain func-
tion module.
• Positive Limit • Packet Dis-
Input carded Due
Detected to Full
(Motion Con- Reception
trol Function Buffer (Eth-
Module) erNet/IP
Function
• Analog Input
Module)
Disconnec-
tion Detected
(CJ-series
Unit)
• Low Battery
Voltage (PLC
Function
Module)
Lit Lit
Lit Lit
Flashes at 1-s Not lit
intervals.
1
Controller
information
Information
These are not
errors, but
appear in the
event log to
notify the user
of specific
information.
• Power
Turned ON
• Power Inter-
rupted
• Memory All
Cleared
Lit
Lit
Not lit
1-7