YASKAWA E-7S SERVOPACK SGD7S Product Manual page 574

Serial
Command Alarm
Error Name
Negative Number
Response
Serial Communi-
A.A9F
E49E cations Framing
Error
Serial Communi-
E4AE A.A9F cations Overrun
Error
Moving Disabled
A.A9F
E4BE
Error due to P-OT
Moving Disabled
A.A9F
E4CE
Error due to N-OT
15.3.3 INDEXER Module Error Displays and Troubleshooting
Meaning
A stop bit detection error occurred with the
serial command.
• The command that caused this error will
be discarded and no response will be
returned.
• There will be no response, but the
/WARN output and LED indicators will
indicate that an error has occurred.
Serial command reception failed.
• The hardware's reception buffer was over-
written with the subsequent data.
(Normally, data is read before it is over-
written, so this error does not occur.)
Travel in the forward direction was
requested when P-OT was in effect. (For-
ward movement is disabled when P-OT
(forward overtravel) is in effect.)
Travel in the reverse direction was
requested when N-OT was in effect.
(Reverse movement is disabled when N-OT
(reverse overtravel) is in effect.)
15.3 Warning Displays
Continued from previous page.
Corrective Action
• Check the serial
communica-
tions protocol
(PnB00) and bit
rate (PnB01)
settings.
• Check the wir-
ing.
• If noise may be
causing the
problem, take
steps to reduce
noise such as
using commu-
nications
cables with fer-
rite cores.
Repair the hard-
ware.
• When P-OT is
being used,
move to a posi-
tion where the
P-OT is not in
effect.
• When P-OT is
not being used,
disable P-OT in
the parameter
(PnB0F =
0003h).
• When N-OT is
being used,
move to a posi-
tion where the
N-OT is not in
effect.
• When N-OT is
not being used,
disable N-OT in
the parameter
(PnB10 =
0003h).
Continued on next page.
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