Omron NX-SL3300 User Manual page 431

Event code Event name
80200000 hex NX Unit I/O
Communica-
tions Error
NX-series Safety Control Unit User's Manual (Z930)
Meaning
An I/O communica- NX Bus of the CPU Unit
•
tions error occurred An error occurred in the CPU
with the NX unit.
unit, which prevents the NX
bus communications from be-
ing carried out normally.
•
The NX Unit is not mounted
properly.
•
The power cable for the Unit
power supply is disconnected.
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 unit power voltage is out
of the supported range, or the
unit power capacity is not suffi-
cient.
•
There is a hardware error in
the NX Unit.
Communications Coupler Unit
•
An error occurred in the com-
munications coupler unit,
which prevents the NX bus
communications from being
carried out normally.
•
The NX Unit is not mounted
properly.
•
The power cable for the Unit
power supply is disconnected.
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 unit power voltage is out
of the supported range, or the
unit power capacity is not suffi-
cient.
•
There is a hardware error in
the NX Unit.
M
Assumed cause
a
j
12 Troubleshooting
Level
I
M O
Reference
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