
APPENDIXA. ALARM LIST
B–64115EN/01
520
Number ContentsMessage
232 TOO MANY HELICAL AXIS
COMMANDS
Three or more axes (in the normal direction control mode (M series) two
or more axes) were specified as helical axes in the helical interpolation
mode.
233 DEVICE BUSY When an attempt was made to use a unit such as that connected via the
RS–232–C interface, other users were using it.
239 BP/S ALARM While punching was being performed with the function for controlling ex-
ternal I/O units ,background editing was performed.
240 BP/S ALARM Background editing was performed during MDI operation.
241 ILLEGAL FORMAT IN G02.2/G03.2
(M series)
The end point, I, J, K, or R is missing from a command for involute inter-
polation.
242 ILLEGAL COMMAND IN
G02.2/G03.2
(M series)
An invalid value has been specified for involute interpolation.
S The start or end point is within the basic circle.
S I, J, K, or R is set to 0.
S The number of rotations between the start of the involute curve and
the start or end point exceeds 100.
243 OVER TOLERANCE OF END POINT
(M series)
The end point is not on the involute curve which includes the start point
and thus falls outside the range specified with parameter No. 5610.
244 P/S ALARM
(T series)
In the skip function activated by the torque limit signal, the number of ac-
cumulated erroneous pulses exceed 32767 before the signal was input.
Therefore, the pulses cannot be corrected with one distribution.
Change the conditions, such as feed rates along axes and torque limit,
and try again.
245 T–CODE NOT ALOWEE IN THIS
BLOCK (T series)
One of the G codes, G50, G10, and G04, which cannot be specified in
the same block as a T code, was specified with a T code.
246 ENCODE PROGRAM
NUMBER ERROR
During read of an encrypted program, an attempt was made to store the
program with a number exceeding the protection range.
(See parameter Nos. 3222 and 223.)
247 ILLEGAL CODE USED
FOR OUTPUT
When an encrypted program is output, EIA is set for the punch code.
Specify ISO.
250 Z AXIS WRONG COMMAND (ATC)
(M series)
Movement along the Z–axis is specified in a block specifying a tool
change command (M06T_). (Only for ROBODRILL)
251 ATC ERROR
(M series)
This alarm is issued in the following cases:
S An M06T_ command contains an unusable T code.
S An M06 command has been specified when the Z machine coordi
nate is positive.
S The parameter for the current tool number (No. 7810) is set to 0.
S An M06 command has been specified in canned cycle mode.
S A reference position return command (G27 to G44) and M06 com-
mand have been specified in the same block.
S An M06 command has been specified in tool compensation mode
(G41 to G44).
S An M06 command has been specified without performing reference
position return after power–on or the release of emergency stop.
S The machine lock signal or Z–axis ignore signal has been turned on
during tool exchange.
S A pry alarm has been detected during tool exchange.
Refer to diagnosis No. 530 to determine the cause. (Only for ROBO-
DRILL)
252 ATC SPINDLE ALARM
(M series)
An excessive error arose during spindle positioning for ATC. For details,
refer to diagnosis No. 531. (Only for ROBODRILL)