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Troubleshooting - Mitsubishi Electric Melsec-k Instruction Manual

Optical data link system.
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.
A
5. OPERATING PROCEDURE
5.3 Troubleshooting
NO (Flicker, off)
Master channel error
e
master channel CPU
Error of sequence program or unit
hardware of master channel
F other than optical fiber
I
cable system, such as error of
I/O
Monitor DA06 to DA09 of
master channel and data register
which retains the contents
detected first. Note 1
(Page
65)
4
Failure of other than optical fiber
cable system, such as error of
I/O
signal and error of data register com-
munication
YES
*
4
NO
I
A
All slave
channels result in
(Page
66)
o
Improper connection of optical
(Link i s restored by
automatic reconnection
of
master and
0
Breakage of optical fiber cable
communication .)
slave channels are
0
Hardware error
of
optical link unit
fiber cable
POWER LEDs
No
in master and slave channels
(Page
63)
m
0
Replacement of
power supply unit
Take
corrective
action
for
error
0
Checkingof
location, referring to Section 5.3.2.
power supply
Note 1
Retain the value when DA06 to DAO9 (data registers for indicating communication error slave channel
numbers) first turn to other than
"0"
in the sequence program
o f
master channel.
62

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