User`s manual

9.2 Warning Displays
9-15
9
Troubleshooting
E44E A.A9F
Canceled Program
Table Err o r
There was a request to start program table
operation even though an E19A or E1BA
alarm occurred when the control power supply
was turned ON.
Eliminate the cause of the alarm.
E46E A.A9F
Canceled JOG Speed
Table Err o r
There was a request to start JOG speed table
operation even though an E1FA or E22A alarm
occurred when the control power supply was
turned ON.
Eliminate the cause of the alarm.
E47E A.A9F
Serial Communications
Receiving Buffer
Overflow Error
There was an overflow in the reception buffer
used for serial commands.
• An error will occur if too many serial com-
mands are sent consecutively without wait-
ing for the responses.
(Normally, the reception buffer will not
overflow if there is command/response
handshaking.)
• When an overflow has occurred, error code
E47E will be returned and all of the data that
has accumulated in the reception buffer will
be discarded.
Wait for a response to be received
before sending the next com-
mand.
The reception buffer can contain
up to 100 commands.
E48E A.A9F
Serial Communications
Parity Error
A parity check error occurred with the serial
command.
• This error will occur if even parity is not
being used.
• 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 indi-
cate that an error has occurred.
• Check the serial communica-
tions protocol (PnB00) and bit
rate (PnB01) settings.
• Check the wiring.
• If noise may be causing the
problem, take steps to reduce
noise such as using communi-
cations cables with ferrite
cores.
E49E A.A9F
Serial Communications
Framing Error
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 indi-
cate that an error has occurred.
• Check the serial communica-
tions protocol (PnB00) and bit
rate (PnB01) settings.
• Check the wiring.
• If noise may be causing the
problem, take steps to reduce
noise such as using communi-
cations cables with ferrite
cores.
E4AE A.A9F
Serial Communications
Overrun Error
Serial command reception failed.
• The hardware’s reception buffer was over-
written with the subsequent data.
(Normally, data is read before it is overwrit-
ten, so this error does not occur.)
Repair the hardware.
E4BE A.A9F
Moving Disabled Error
due to P-OT
Travel in the forward direction was requested
when P-OT was in effect. (Forward movement
is disabled when P-OT (for
ward overtravel) is
in effect.)
• W
hen P-OT is being used,
move to a position where the P-
OT is not in effect.
• When P-OT is not being used,
disable P-OT in the parameter
(PnB0F = 3).
E4CE A.A9F
Moving Disabled Error
due to N-OT
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.)
• When N-OT is being used,
move to a position where the
N-OT is not in effect.
• When N-OT is not being used,
disable N-OT in the parameter
(PnB10 = 3).
(cont’d)
Serial
Command
Negative
Response
Panel
Display
Error Name Meaning Corrective Action