ILLEGAL TOOL AXIS VECTOR (WNo., NNo., BNo.)

A command that causes an incorrect tool axial direction vector was specified in the tool center point control or cutting point command mode. 1. In the mode of G43.4/G43.8 with single-axis interpolation selected, commands were specified in such a way that the resulting tool path will not pass through the singular point although the sign of the angular position of the primary rotary axis is to be reversed. 2. The command of the tool axis is not correct (as it will reverse the direction of the tool). 3. With single-axis interpolation selected, the command in a single block will cause a motion through more than 180° on the rotary axis of linear type.

1. 11.
2. 2Modify the program for a tool path through the singular point, or select joint interpolation.
3. 32.
4. 4Divide the command block concerned in order that the resulting rotation of the tool direction per block will not exceed 180°.
5. 53.
6. 6Modify the program for a per-block motion angle of 180° or less on the rotary axis of linear type, or select joint interpolation.