Omron NX701-17 Series Troubleshooting Manual page 262

3 Error Tables
Event code Event name
80200000 hex NX Unit I/O
Communica-
tions Error
3-184
Meaning Assumed cause
An I/O communica- For the NX bus of CPU
tions error occurred Units
in an NX Unit.
• An error that prevents
normal NX bus commu-
nications occurred in a
CPU Unit.
• An NX Unit is not
mounted properly.
• The power cable for the
Unit power supply is dis-
connected, or the wiring
from the Unit power
supply to the NX Units is
incorrect.
• The power cable for the
Unit power supply is
broken.
• The voltage of the Unit
power supply is outside
the specified range, or
the capacity of the Unit
power supply is insuffi-
cient.
• There is a hardware
error in an NX Unit.
For Communications Cou-
pler Units
• An error that prevents
normal NX bus commu-
nications occurred in a
Communications Cou-
pler Unit.
• The NX Unit is not
mounted properly.
• The power cable for the
Unit power supply is dis-
connected. Or, the wir-
ing from the Unit power
supply to the NX Units is
incorrect.
• The power cable for the
Unit power supply is
broken.
• The voltage of the Unit
power supply is outside
the specified range. Or,
the capacity of the Unit
power supply is insuffi-
cient.
• There is a hardware
error in the NX Unit.
Level
Maj Prt Min Obs Info
S
NJ/NX-series Troubleshooting Manual (W503)
Reference
W565