Omron NX701-17 Series Troubleshooting Manual page 34

1 Overview of Errors
 NJ-series CPU Units
Power Supply Unit
The following table shows the status of front-panel indicators, the status of user program execution, and
the ability to connect communications to the Sysmac Studio or an HMI during startup, during normal
operation, and when errors occur.
CPU Unit operating status
Startup
RUN mode
Normal
operation
PROGRAM mode
Power Supply Error
CPU Unit Reset
Fatal error
Incorrect Power Sup-
in CPU
ply Unit Connected
Unit
CPU Unit Watchdog
*1
Timer Error
*2
Major fault
*2
Partial fault
Non-fatal
error in
CPU Unit
*2
Minor fault
*2
Observation
*1 Refer to 1-2 Fatal Errors for information on individual errors.
*2 Refer to 1-3 Non-fatal Errors for information on individual errors.
*3 The function module where the error occurred stops.
1-6
PWR indicator
Power
Supply Unit
PWR (green) RUN (green)
Lit Flashing
(1-s intervals)
Lit Lit
Lit Not lit
*1 Not lit Not lit
*1 Lit Not lit
Lit Flashing
*1 (3-s intervals)
Lit Not lit
Lit Not lit
Lit Lit
Lit Lit
Lit Lit
CPU Unit
RUN indicator
ERROR indicator
CPU Unit
ERROR (red)
Not lit
Not lit
Not lit
Not lit
Not lit
Lit
Lit
Lit
Flashing
(1-s intervals)
Flashing
(1-s intervals)
Not lit
NJ/NX-series Troubleshooting Manual (W503)
Communica-
User pro-
tions with Sys-
gram execu-
mac Studio or
tion status
HMI
Stopped. Not possible.
Continues. Possible.
Stopped.
Stopped. Not possible.
Stopped.
Stopped.
Stopped.
Stopped. Possible. (Com-
munications can
*3
Continues.
be connected
from an HMI if
Continues.
EtherNet/IP is
operating nor-
mally.)
Continues.