#412 linuxcnc Helix movement power off bug if the feed rate is over supported

[jasonhuang]

When doing G3 helix movement with z axis provided, if the feed rate is over the max, then the machine will power off, the result is the milling tool directly broken. Showing joint following error.

if without z axis(only xy), the machine will be slow down to supported feed rate automatically.

It should not power off, if not slowing down automatically, at least use stop instead power off. For some kind of machine, if power off, the tool will jump in to the bottom.
Test code:

%
N100 G21

N102 G0 G17 G40 G49 G80 G90

N104 T215 M6
N106 G0 G90 G54 X0. Y0. S9000 M3 G4 P7

N108 G43 H215

N110 G0 X20.0 Y25.0

N112 G4 P0.01

N114 G0 Z25.0

N116 G0 Z5.0

N118 G1 Z0.5 F30

N120 G3 X21.2198 Y23.7802 I0.6099 J-0.6099 F1500

(power off happenned in this line with z axis param)

N122 G3 X21.725 Y25.0 Z-1.8056 I-1.2198 J1.2198 P6 F1500

M30
%

[Sebastian Kuzminsky]

Which version of linuxcnc are you using?

Which platform (OS & kernel) are you running on?