Z axis probe height init

tommylight wrote: Does it say to watch on youtube and offer the link?
It does exactly that here.

We must have done that at the same time Tom.

phillc54 wrote:

tommylight wrote: Does it say to watch on youtube and offer the link?
It does exactly that here.

We must have done that at the same time Tom.

Yup, yup !

jay1st wrote: here is my machine folder zipped

OK, I have noticed a few things that I think you should change in the ini file.

[DISPLAY] section
From: To:

[AXIS_Z] section
From: To:

You also have in the [AXIS_Z] section: and in the [JOINT_2] section: These should be the same.


In the Config Panel you have: That is way too high, it is measured from the [AXIS_Z]MIN_LIMIT which in your case is 5.0, this will send your Z axis up to the top limit (90) to begin a probe.


I would suggest that you set up your Z axis by following this: linuxcnc.org/docs/2.8/html/plasma/plasma....html#_initial_setup


EDIT:
You probably should also increase your Setup Speed in the Config Panel to as high as possible as you really want the machine to move from Pierce Height to Cut Height as quickly as it can.

Ahhh very nice and tnx a lot !!!!

I'll try that when i have time after work, maybe tomorrow
I never realized i had a difference in Joint values on the Z axis

And i think i changed the acceleration and velocity as sometimes the Z stepper was "chirping " if the accel was too fast, it's a small nema17 running a 15mm OD ball screw, it's all on bearings so it should have minimal efforts but still happens.

For a while i thought this thread was side-tracked

BTW what difference does make the POSITION_OFFSET from MACHINE to RELATIVE ?

BTW what difference does make the POSITION_OFFSET from MACHINE to RELATIVE ?

In RELATIVE mode the DROs in the Preview will show the coordinates that you are using which is normally G54 so when you touchoff an axis to zero on a part then the DROs show the position from touchoff zero. You can then see the relationship of the DROs to the material.

In MACHINE mode the DROs show the G53 machine coordinates.

The DRO showed on the PLAMAC screen has 2 sets if i remember correctly, one is abslolute (MACHINE ?) and the other lines are the RELATIVE values after a touch off. Am i correct ?