
APPENDIXG. ALARM LIST
B–63014EN/02
992
Number ContentsMessage
5242 ILLEGAL AXIS NUMBER
(M series)
The axis number of the synchronous master axis or slave axis is incor-
rect. (This alarm is issued when flexible synchronization is turned on.)
Alternatively, the axis number of the slave axis is smaller than that of the
master axis.
5243 DATA OUT OF RANGE
(M series)
The gear ratio is not set correctly. (This alarm is issued when flexible
synchronization is turned on.)
5244 TOO MANY DI ON
(M series)
Even when an M code was encountered in automatic operation mode,
the flexible synchronization mode signal was not driven on or off.
Check the ladder and M codes.
5245 OTHER AXIS ARE COMMANDED
(M series)
One of the following command conditions was present during flexible
synchronization or when flexible synchronization was turned on:
1. The synchronous master axis or slave axis is the EGB axis.
2. The synchronous master axis or slave axis is the chopping axis.
3. In reference position return mode
5251 ILLEGAL PARAMETER IN G54.2 A fixture offset parameter (No. 7580 to 7588) is illegal. Correct the pa-
rameter.
5252 ILLEGAL P COMMAND IN G54.2 The P value specifying the offset number of a fixture offset is too large.
Correct the program.
5257 G41/G42 NOT ALLOWED IN MDI
MODE
G41/G42 (cutter compensation C: M series, tool–nose radius com-
pensation: T series) was specified in MDI mode. (Depending on the set-
ting of bit 4 of parameter No. 5008)
5303 TOUCH PANEL ERROR A touch panel error occurred.
Cause:
1. The touch panel is kept pressed.
2. The touch panel was pressed when power was turned on.
Remove the above causes, and turn on the power again.
2) Background edit alarm
Number Message Contents
???
BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in
ordinary program edit.
(P/S alarm No. 070, 071, 072, 073, 074, 085 to 087)
Modify the program.
140 BP/S alarm It was attempted to select or delete in the background a program being
selected in the foreground. (NOTE)
Use background editing correctly.
NOTE
Alarm in background edit is displayed in the key input line of the background edit screen instead
of the ordinary alarm screen and is resettable by any of the MDI key operation.
3) Absolute pulse coder (APC) alarm
Number Message Contents
300 nth–axis origin return Manual reference position return is required for the nth–axis (n=1 to 8).
301 APC alarm: nth–axis communication nth–axis (n=1 to 8) APC communication error. Failure in data transmis-
sion
Possible causes include a faulty APC, cable, or servo interface module.
302 APC alarm: nth–axis over time nth–axis (n=1 to 8) APC overtime error.
Failure in data transmission.
Possible causes include a faulty APC, cable, or servo interface module.