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MELSEC-
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14 TROUBLESHOOTING
14.2 Error and warning details
(1) Errors
Types of errors
Errors detected by the D75P2 include parameter setting range errors and errors at
the operation start or during operation.
(1) Parameter setting range errors
The parameters are checked at the rising edge (OFF
ON) of the remote
station READY signal [RX(n+7)B].
An error will occur if there is a mistake in the parameter setting details at that
time.
When this kind of error occurs, the D75P2 READY signal does not turn OFF.
To cancel this kind of error, set the correct value in the parameter for which
the error occurred, and then turn ON the remote station READY signal
[RX(n+7)B].
(2) Errors at the operation start or during operation
These are errors that occur at the operation start or during operation when
using positioning control, JOG operation, manual pulse generator operation,
etc. If an axis error occurs during interpolation operation, the error No. will be
stored in both the reference axis and the interpolation axis.
Note that in the following cases (a) and (b), the axis error No. will only be
stored in the reference axis during analysis of the positioning data set in each
point of the positioning start data table.
(a) When the interpolation axis is BUSY
(b) When the error occurred in positioning data or parameters unrelated to
interpolation control.
If the error occurred at the simultaneous start of a positioning operation, the
axis error storage details will differ depending on whether the error occurred
before or after the simultaneous start.
If the error occurred before the simultaneous start (illegal axis No., other axis
BUSY, etc.), an "error before simultaneous start" will occur.
If the error occurred after the simultaneous start (positioning data error,
software stroke limit error, etc.), an error code corresponding to the axis in
which the error occurred will be stored. Because a simultaneous start
cannot be carried out due to this, a "simultaneous start not possible error"
error code will be stored in all axes in which an error has not occurred.
The axis operation status will be displayed as "error occurring" for axes in
which an error occurred.
If an error occurs during operation, any moving axes will deceleration stop,
and their operation status will be displayed as "error occurring".
Both axes will decelerate to a stop during interpolation operations, even if the
error occurs in only one axis.
(3) Types of error codes
Error code Error type
001 to 009 Fatal error
010 to 099 Error at selection of stepping motor mode
100 to 199 Common error
200 to 299 Error at zero point return
300 to 399 Error during JOG operation
500 to 599 Error during positioning operation
900 to 999 Error during parameter setting range check