User`s manual

11 - 11 11 - 11
MELSEC
11 TROUBLESHOOTING
NO
YES
NO
NO
YES
YES
YES
YES
NO
NO
YES
NO
YES
NO
1) 2) 3)
Is the "RUN" LED lit?
Is the "SD" LED
lit (flashing)?
Is the "SD" LED
lit (flashing)?
Is the transmission
speed setting correct?
Correct the transmission speed
setting
Reset the board
Reset the board
Reset the board
Failure in the
A80BDE-J61BT13
Failure in the
A80BDE-J61BT13
Failure in the
A80BDE-J61BT13
Failure in the
A80BDE-J61BT13
Is the
communication
cable wired
correctly? *1
Is the
station number
switch set correctly?
(Is there a duplication
with another
station?)
Is the
station number
switch set correctly?
(Is there a duplication
with another
station?)
Set the correct station
number
Reset the board
Set the correct station
number
Complete
1 : Check for shorts, reversed connection, broken connection, terminal resistor, FG
connection, total extended distance, and distance between stations