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Flow Chart Used When "rd/sd" Leos Of The A2ccpu Do Not Flicker - Mitsubishi Electric MELSEC-A Series User Manual

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9.
TROUBLESHOOTING
9.2.7
Flow chart used when "RD/SD" LEOs of the A2CCPU do not flicker
"RO/SO" LEOs
do not flicker.
YES
NO (Only "RO" LED is off.)
Connect data link cables to
SO (SOA, SOB) and to RO
(ROA, ROB) of the master
module and perform data
communication.
I
YES
Check each remote module
:;:'~---ol
referring to the troubleshooting
instructions of respective User's
Manual.
NO
Read out communication
error code in 09061.
NO
Consult the sales
repre-
sentative with details.
Consult the sales repre-
sentative
with
details.
Perform the following. If the
same error still occurs,
replace the A2C.
Turn on the power.
Reset.
Move the RUN key switch
from STOP to RUN.
9-9

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