3-107
3 Error Tables
NJ-series Troubleshooting Manual (W503)
3-1 Errors by Source
3
3-1-7 Errors in Slave Terminals
65280000 hex Stuck-at-high
Detected at
Safety Output
It was detected that
the safety output
terminal is stuck
ON.
• The positive power supply line
is in contact with the output sig-
nal line.
• The output power supply is out-
side the specifications.
• The internal circuit is faulty.
• A memory error or signal error
occurred due to a transient
cause, such as a software error
or excessive noise.
SNX-series
Safety Control
Unit User’s
Manual (Z930)
80200000 hex NX Unit I/O
Communica-
tions Error
An I/O communica-
tions error occurred
between the Com-
munications Cou-
pler Unit and the
NX Unit.
• The NX Unit is not mounted
properly.
• There is a hardware error in the
NX Unit.
S Same as
above.
80300000 hex Safety Pro-
cess Data
Communica-
tions Timeout
A communications
timeout occurred in
safety process data
communications
with a safety slave.
• A setting is not correct. The set-
ting of the safety task period of
the Safety CPU Unit is too
short. Or, the setting of the
PDO communications safety
task period of the EtherCAT
master is too short.
• There is excessive noise.
• The safety slave entered a sta-
tus where it could not continue
safety process data communi-
cations.
• An error or status change
occurred in the EtherCAT Cou-
pler Unit to which the Unit is
connected, preventing correct
process data communications.
S Same as
above.
84F10000 hex NX Bus I/O
Communica-
tions
Stopped
An error occurred in
I/O communications
between the Com-
munications Cou-
pler Unit and an NX
Unit.
There is a hardware error in the
Communications Coupler Unit or
an NX Unit.
S Same as
above.
80220000 hex NX Message
Communica-
tions Error
An error was
detected in mes-
sage communica-
tions for an NX Unit
and the message
frame was dis-
carded.
• The message communications
load is high.
• The communications cable is
disconnected or broken.
S Same as
above.
90400000 hex Event Log
Cleared
The event log was
cleared.
The event log was cleared by the
user.
S Same as
above.
90430000 hex Memory All
Cleared
Th
e Unit settings
we
re cleared.
The Clear All Memory operation
was performed.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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