Omron NX-SIH400, User Manual

Page: 440 / 626

Event code Event name Meaning Assumed cause
Level
Reference
M
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P
rt
M
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O
b
s
I
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o
80200000 hex NX Unit I/O
Communica-
tions Error An I/O communica-
tions error occurred
between the NX bus
master and the NX
Unit.
•
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.
¡ page
12 - 73
80300000 hex Safety Proc-
ess Data
Communica-
tions Time-
out A communications
timeout occurred in
safety process data
communications with
the Safety Control
Unit.
•
A setting is not correct. The
setting of the safety task peri-
od is too short.
•
There is excessive noise.
•
The Safety CPU Unit or safety
slave entered a status where it
could not continue safety proc-
ess data communications.
•
The process data communica-
tions were not performed cor-
rectly because an error or sta-
tus change occurred in the NX
bus master to which the Unit is
connected.
¡ page
12 - 75
84F10000 hex NX Bus I/O
Communica-
tions Stop-
ped An error occurred in
I/O communications
between the NX bus
master and an NX
Unit. There is a hardware error in the
NX bus master or an NX Unit. ¡ page
12 - 76
l
Safety I/O Errors
Event code Event name Meaning Assumed cause
Level
Reference
M
a
j
P
rt
M
i
n
O
b
s
I
n
f
o
05210000 hex Internal Cir-
cuit Error at
Safety Input A fault was detected
in the internal circuit
for the safety input
terminal.
•
The internal circuit for the safe-
ty input terminal is faulty.
•
A memory error or signal error
occurred due to a transient
cause, such as an excessive
noise.
¡ page
12 - 77
12 Troubleshooting
12 - 28
NX-series Safety Control Unit User's Manual (Z930)