Omron NX-SL3500

Event code Event name Meaning Assumed cause
Level
Reference
M
a
j
P
rt
M
i
n
O
b
s
I
n
f
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80200000 hex NX Unit I/O
Communica-
tions Error
An I/O communica-
tions error occurred
with the NX unit.
NX Bus of the CPU Unit
• An error occurred in the CPU
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.
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page
12 - 35
12 Troubleshooting
12 - 19
NX-series Safety Control Unit User's Manual (Z930)
12-3 Checking for Errors with the Sysmac Studio
12
12-3-3 Event Codes for Errors and Troubleshooting Procedures