Event code
Event
name
Meaning Assumed cause
Level
Reference
M
a
j
P
rt
M
i
n
O
b
s
I
n
f
o
65060000 hex Unit I/O Dis-
connection
Detected for
Channel 4
A disconnected input
was detected for
channel 4.
• Input wiring is broken.
• Input wiring is disconnected.
¡ 8
page
9 - 22
80200000 hex NX Unit I/O
Communi-
cations Er-
ror
An I/O communica-
tions error occurred
in an NX Unit.
For the NX bus of CPU Units
• An error that prevents normal
NX bus communications oc-
curred in a CPU Unit.
• An NX Unit is not mounted
properly.
• The power cable for the Unit
power supply is disconnect-
ed, 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 speci-
fied range, or the capacity of
the Unit power supply is in-
sufficient.
• There is a hardware error in
the NX Unit.
For Communications Coupler
Units
• An error that prevents normal
NX bus communications oc-
curred in a Communications
Coupler Unit.
• An NX Unit is not mounted
properly
.
• The power cable for the Unit
power supply is disconnect-
ed. 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 speci-
fied range. Or, the capacity of
the Unit power supply is in-
sufficient.
• There is a hardware error in
the NX Unit.
¡
page
9 -
23
9 Troubleshooting
9 - 9
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
9-3 Checking for Errors and Troubleshooting on the Support Software
9
9-3-3 Event Codes and Corrections for Errors
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