Mitsubishi Melsec-A AJ65SBT User Manual page 88

6 TROUBLESHOOTING
From the previous page
6 - 4
From the previous page
Is the "L RUN"
LED on?
YES
Is the "SD" LED
on (flickering)?
YES
The corresponding
module failure
station number switch correctly
set (not overlapping with
The corresponding module
failure (Station number
switch)
Are the
station number switches set
correctly (not overlapping with
other stations)?
YES
The corresponding module
failure (Station number
switch)
1 : Check for a short, reversed connection, wire breakage, terminating resistor, FG
connection, overall distance and station-to-station distance.
NO
NO
Is the "SD" LED
on (flickering)?
Is the
YES
NO
transmission speed
setting correct?
YES
Is the
communication cable
wired correctly?
1
YES
The corresponding module
failure (Transmission
speed setting switch)
Is the
NO
other stations)?
Set the station
number
YES
correctly.
NO
Set the station
number
correctly.
Complete
MELSEC-A
From the previous page
NO
Set the transmission speed
correctly.
Power on again/press the
reset switch.
NO
Wire the communication
cable correctly.
Power on/press the reset
switch.
Power on/press the reset
switch.
6 - 4