Omron WIRED REMOTE I-O System Manual page 86

Self-Diagnosis
Error Before Operation: C500 Masters and Slaves
Programming LEDs on Master
Console LEDs
TR/ TEST
ERR OK
CPU WAITING flash not lit
flash not lit
lit not lit
CPU WAITING flash not lit
/lit
or
REMOTE I/O
ERR
lit not lit
REMOTE I/O not not lit
ERR lit
or
VER ERR
I/O VER ERR not not lit
lit
LEDs on
Slave
END LINE TR/ ERR
RS ERR ERR
CHK
lit not lit lit not lit lit
not lit not lit
lit not lit not lit
flash not lit lit not lit lit
not lit lit not lit lit
lit
--- not lit lit not lit lit
--- not lit lit lit
not not lit lit not lit lit
lit
not not lit lit not lit lit
lit
Remote Cause
Terminal LEDs
POWER TR/
ERR
lit Terminator not set. Set farthest Unit
Transmission line
broken or wired
incorrectly.
Slave and Remote
Terminal points
exceed 512.
Power not
supplied to
terminator Slave.
not Power not
lit supplied to
terminator Remote
Terminal.
lit Multiple
terminators set.
Refer to 7-7 Slave
Unit Numbers with
Multiple Termina-
tors.
lit Transmission line
shorted.
lit Same unit number
or word set twice
on Slaves.
lit lit Slave I/O bus
error.
lit CPU Unit error in
Master.
lit I/O table not
written or I/O table
inconsistency.
(LEDs will go out
after TR/ERR LED
on Master flashes
and terminator
LEDs are lit for
several seconds.)
Section 7-1
Correction
from Master as
terminator.
Correct
transmission line
Reduce total
number of points.
Supply power to
Slave.
Supply power to
Remote Terminal.
Set only one
terminator for
each Master.
Correct
transmission line.
Correct settings
so same word is
not allocated
twice.
Check Slave, I/O
Units on Slave,
and Slave's Rack.
Replace Master.
Check I/O table on
Programming
Console and
correct if
necessary. If I/O
table verifies,
check all Slaves
not set as
terminators.
77