Mitsubishi A1SJ61BT11 User Manual page 241

13 TROUBLESHOOTING
From the previous page
1 Check for a short, reversed connection, wire breakage, terminal resistor, FG connection, overall distance and
station-to-station distance.
From the previous page
N
Is the "L RUN"
LED on?
Y
Is the "SD" LED
on (flashing)?
N
Is the "SD" LED
on (flashing)?
Y
Malfunction of the
corresponding
module
station number
switch correctly set (not
overlapping with other
stations)?
Malfunction of the
corresponding module
(Station number switch)
Are the
station number
N
switches set correctly (not
overlapping with other
stations)?
Y
Set the station
number correctly.
Malfunction of the
corresponding module
(Station number switch)
N
Y
Is the baud rate
setting correct?
Y
Is the
communication cable
wired correctly?
1
Y
Malfunction of the
corresponding module
(Baud rate switch)
Is the
N
Set the station
Y
number correctly.
Complete
13 - 5
MELSEC-A
From the previous page
N
Set the baud
rate correctly.
Reset the power supply/
press the reset switch.
N
Wire the communication
cable correctly.
Reset the power supply/
press the reset switch.
Reset the power supply/
press the reset switch.