9 - 7
9 Troubleshooting
NX-series Communications Interface Units User’s Manual (W540)
9-3 Checking for Errors and Troubleshooting on the Support Software
9
9-3-3 Event Codes for Errors and Troubleshooting Proce-
dures
40200000 hex NX Unit
Processing
Error
A fatal error
o
ccurred in an NX
Unit.
• An error occurred in the soft-
ware. S
P. 9-12
80200000 hex NX Unit I/O
Co
mmu
ni-
cations
Error
An I/O communi-
cations error
o
c
curred in an NX
Unit.
For the NX bus of CPU Units
• An error that prevents normal NX
bus com
munications occurred in
a CPU Unit.
• An NX Unit is not mounted prop-
erly.
• The power cable for the Unit
p
o
wer supply is disconnected, or
the wiring from the Unit power
supply to the NX Units is incor-
rect.
• The power cable for the Unit
p
o
wer supply is broken.
• The voltage of the Unit power
supp
ly is outside the specified
range, or the capacity of the Unit
power supply is insufficient.
• There is a hardware error in an
NX Uni
t
.
For Communications Coupler Units
• An error that prevents normal NX
bus com
munications occurred in
a Communications Coupler Unit.
• An NX Unit is not mounted prop-
erly.
• The power cable for the Unit
p
o
wer supply is disconnected.
Or, the wiring from the Unit
power supply to the NX Units is
incorrect.
• The power cable for the Unit
p
o
wer supply is broken.
• The voltage of the Unit power
supp
ly is outside the specified
range. Or, the capacity of the
Unit power supply is insufficient.
• There is a hardware error in the
NX Uni
t
.
S
P. 9-13
80240000 hex NX Unit
Clock Not
Synchr
o-
nized Error
A time information
error occurred in
an NX Unit.
For the NX bus of CPU Units
• There is a hardware error in an
NX Uni
t
.
• There is a hardware error in a
CPU Un
it.
For C
ommunications Coupler Units
• There is a hardware error in an
NX Unit
.
• There is a hardware error in the
Co
mmu
nications Coupler Unit.
S
P. 9-15
Event code
Event
name
Meaning Assumed cause
Level
Refer-
ence
Maj Prt Min Obs Info
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