3 Error Tables
3-148
NJ-series Troubleshooting Manual (W503)
84600000 hex Communica-
tions Error
A Slave Unit was
disconnected from
the network.
• Cable lengths (trunk line and
branch lines) are unsuitable.
• A cable is disconnected or
loose.
• A terminating resistance is not
connected. Or, the terminating
resistance is somewhere other
than the end of the trunk line.
• Noise
• The Slave Unit does not
respond to communications
from the Master Unit because
the Slave Unit is faulty, the line
is disconnected, or the commu-
nications power supply is inter-
rupted.
SU CJ-series
CompoNet
Master Units
Operation
Manual for NJ-
series CPU
Unit (Cat. No.
W493)
84610000 hex Repeater
Unit Commu-
nications
Error
An error occurred in
Repeater Unit com-
munications.
• Cable lengths (trunk line and
branch lines) are unsuitable.
• A cable is disconnected or
loose.
• A terminating resistance is not
connected. Or, the terminating
resistance is somewhere other
than the end of the trunk line.
• Noise
• The Repeater Unit does not
respond to communications
from the Master Unit because
the Repeater Unit is faulty, the
line is disconnected, or the
communications power is inter-
rupted.
SU Same as
above.
64980000 hex Representa-
tive Warning
A warning has
occurred in at least
one Slave Unit.
• A warning has occurred in at
least one Slave Unit.
S Same as
above.
64990000 hex Representa-
tive Alarm
An alarm has
occurred in at least
one Slave Unit.
• An alarm has occurred in at
least one Slave Unit.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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