16/18/21

G251 and G250 are not independent blocks.

P or Q is not commanded in the G251 block, or the command value is out of the range. Modify the program.

G51.2/G251 is further commanded in the G51.2/G251 mode. Modify the program.

Coordinate system is set or tool compensation of the shift type is executed in the synchronous control. Correct the program.

Movement is commanded for the axis to be synchronously controlled. Any of the following alarms occurred in the operation with the simple synchronization control. 1) The program issued the move command to the slave axis. 2) The program issued the manual continuous feed/manual handle feed/incremental feed command to the slave axis. 3) The program issued the automatic reference position return command without specifying the manual reference position return after the power was turned on. 4) The difference between the position error amount of the master and slave axes exceeded the value specified in parameter NO.8313.

The arbitrary angle chamfering or a corner R is commanded or the plane including an additional axis. Correct the program.

G31 is commanded in the per revolution command when the high-speed skip option is provided. Modify the program. Or A high-speed skip (G31) was specified during the feed-per-rotation or
rigid tapping mode. Correct the program.

M98 and M99 are executed in the schedule operation. M198 is executed in the DNC operation. Modify the program. 1) The execution of an M198 or M99 command was attempted during scheduled operation. Alternatively, the execution of an M198 command was attempted during DNC operation. Correct the program. The execution of an M99 command was attempted by an interrupt macro during pocket machining in a multiple repetitive canned cycle.

The specified distance was too short or too long in rigid tapping.

Plane changeover was instructed in the rigid mode. Correct the program.