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MELSEC-
A
10 TROUBLESHOOTING
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
No
Yes
1)
(from previous page)
Is the L RUN LED ON?
Is the SD LED flashing?
The module may be faulty.
Please consult your local Mitsubishi
representative, explaining a detailed
description of the problem.
Are the station No.
setting switches set
correctly? (Are they
duplicated with
other station?)
The module (station No. setting
switches) may be faulty. Please
consult your local Mitsubishi
representative, explaining a detailed
description of the problem.
Correctly set the station No.
Reapply power to or reset
slave station.
Is the SD LED flashing?
Is transmission
speed setting correct?
Is RS-232-C cable
wired correctly?
Reapply power to or reset
slave station.
The module (transmission speed
setting switch) may be faulty. Please
consult your local Mitsubishi
representative, explaining a detailed
description of the problem.
Correctly set the station No.
Reapply power to or reset
slave station.
Connect RS-232-C cable
correctly.
End
*1 Check for a short-circuit, reverse connection, disconnection, the terminator,
Correct the transmission
speed setting.
Are the station No.
setting switches set
correctly? (Are they
duplicated with
other station?)
The module (station No. setting
switches) may be faulty. Please
consult your local Mitsubishi
representative, explaining a detailed
description of the problem.
*1
FG connection, overall distance, and distance between stations.