Python Interface Feed Hold

Ok in Axis if M53 is active toggling motion.feed-hold works so it makes me wonder if the GUI is doing it.

JT

I think python's feed-hold and M53 are the same thing.
it should have been called feed-hold-enable
I the python module it calls the NML message:
EMC_TRAJ_SET_FH_ENABLE

There seems not to be a equivalent to motions feed-hold in python.
probably nml message:
EMC_TRAJ_HALT_TYPE

m53 and python's feed_hold just control a switch for the motion.feed-hold HAL pin.

that pin is used in control.c to set the feed scaling to 0.

if ( enables & FH_ENABLED ) {
/* read feed hold HAL pin */
if ( *emcmot_hal_data->feed_hold ) {
scale = 0;
}

Chris, thanks for clearing that up.

I just did some testing and python feed-hold true, M53 off and motion.feed-hold stops motion.

With python feed-hold false and M53 active motion.feed-hold does not stop motion.

JT

If you set it off in Python then on again with G53, does Python still "win"?

Issuing a M53 P0 then turning off python feed-hold (which is really feed-hold-enable) then turning on M53 with M53 P1 the python status feed_hold_enabled is true and setting motion.feed-hold on stops motion.

I 'think' I just misunderstood what does what with python set_feed_hold(int) which should be named set_feed_hold_enabled(int).

Turning off M53 then setting python set_feed_hold true it turns on M53 and updates the python mcodes status.

Setting python set_feed_hold False does not update the python mcodes so it 'looks' like M53 is on when it's really off.

In any case the python status feed_hold_enabled always shows the correct status of feed hold enable.

JT