Omron sysmac NX Series User Manual page 603

The following table shows the status of front-panel indicators and the ability to communicate with the
Sysmac Studio or with an HMI during startup, during normal operation, and when errors occur.
Communication Control Unit operating status
Startup
Normal operation
Power Supply Error
Hardware Initialization Er-
ror
Fatal error in Com-
CPU Unit Error
munication Control
Unit
System Initialization Er-
ror
Major fault
Partial fault
Non-fatal error in
Communication Con-
trol Unit
Minor fault
Observation
*1. Refer to 15-1-2 Fatal Errors on page 15-4 for information on individual errors.
*2. If the status of indicators shown above continues 30 seconds or longer, this error exists.
*3. Refer to 15-1-3 Non-fatal Errors in the Communication Control Unit on page 15-6 for information on individual errors.
Precautions for Correct Use
A power shortage may occur at the CPU Rack depending on the configuration of the NX Units
mounted to the Communication Control Unit. If one of the followings occurs, use the Sysmac
Studio to check if the power consumed by the Units on the CPU Rack exceeds the supplied
power.
• The Communication Control Unit is operating but the mounted NX Units do not operate.
• Power is supplied to the Communication Control Unit, but the Communication Control Unit
does not turn ON.
NX-series Safety Control Unit/Communication Control Unit User's Manual (Z395)
*1
*1*2
*1
*1
*3
*3
*3
*3
Communication Control Unit
UNIT PWR RUN
(green) (green)
¡
8
(2-s inter-
vals fol-
lowed by
0.5-s inter-
vals)
¡ ¡
l l
¡ l
¡ l or 8 (2-s
intervals or
0.5-s inter-
vals)
¡
8
(2-s inter-
vals) for 30
s or longer
¡ l
¡ ¡
¡ ¡
¡ ¡
15 Troubleshooting
(¡: Lit / l: Not lit / 8: Flashing)
Communications
with the Sysmac Stu-
ERROR
dio or an HMI
(red)
l Not possible.
l Possible.
l Not possible.
l
¡
l
Possible.
¡
(Communications can
8
be connected from an
(1-s inter-
HMI if EtherNet/IP is
vals)
operating normally.)
8
(1-s inter-
vals)
l
15
15-3