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12. TROUBLESHOOTING
MELSEC-A
12.4.5
When communications sometimes fails
Communications sometimesfails.
+
Consult the nearest Mitsubishi
representative.
When the A15171 C24 CD signal in
the fullduplex transmission is
controlled by the computer, either
(a) control the signal
so
that it is
always ON, or (b) set the CD
terminal check to'disabled'.
Set the RS-232C CD terminal check
to 'enabled" in the halfdudex
communications. Also, set the
computer so that the signal turns
ONIOFF at the timing mentioned in
Section 5.4.
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