G-code file loading at G53 instead of G54

I'm sorry, I'm very confused by all of this. I have thousands of hours on a Tormach running Path Pilot, but this isn't behaving in a similar way.

The GUI G54 location set in the GUI at the bottom of the last screenshot isn't reflected in the offset tables. The display of the work envelope shows my G54 origin moving if I jog and hit the G54 zero GUI buttons, but the offsets table doesn't change. How is the offsets table supposed to be configured? In my screenshot, the Z column of the offsets table has values 1-12 in it, but I don't know where those came from or why they're there.

could you run in debug mode (DISPLAY = qtvcp -d qtdragon), run linuxcnc from a terminal and post the output?

Sure. I'll try that this afternoon.

I used "DISPLAY = qtvcp -d qtdragon_hd" because I'm using the HD version and ran it from terminal. I've attached the terminal log.

Ok ill see nothing error ing in qtdragon.
I do see some weird errors about tool stat. But let's put test aside for the moment.

What I see based on your screen shots.
- g54 has zero offset for x and y so will be the same as machine zero position.
- you have a small offset in g54 z and while hard to see i think that it is honoring that.
- the offset table shows the same but also shows you have a rotational offset. Yes those z offset numbers seem weird.

I would cancel the rotational offset.

If you wish to move the g54 offset move the machine where you want g54 0 to be and press ZERO on each axis you wish to zero.
After that is done switching between ABS and G54 should make the DRO change the amount of offset and the offset will be shown on the offset table.

Thank for your the response. Here is some more information in response to your suggestions.

This first image is the machine showing G53 coordinates. The tool is in the center of the work envelope, as you can tell by the non-zero coordinates (0, 0, 0 is the top front left corner). 

This next image is after having switched to G54 using the gui button. As you can see, I set the G54 origin to be the current position, so it reads 0, 0, 0 while the tool is in the center of the work envelope. The work envelope image shows the work offset origin (3 vector arrows) as at the current position, as expect. This is all behaving as I expect.

But when I look at the offsets table, it hasn't reflected the changes to the G54 origin. No values have updated.

More so, when I clicked on the G54 Z value of 4 and tried to directly change it, I got this error, with the full text copied below.


Error message:

Ok great we are getting there.
I'm now betting that these debug lines are showing the problem:

Unfortunately I don't know what would cause this message.
Hopefully someone else will see and help us. I'll look at your INI some more tomorrow.
 

Normally, you would touch off on your workpiece and set RefX, Y, and Z or use the probe screen (my preference),
Jog away from the home position and touch off all axes (using Ref buttons) then look at your offsets.
Press ABS and G54 to cycle between G54 and absolute coordinates.

The process is no different on a Tormach machine or any other machine including a manual mill with a DRO. Possibly your Tormach was dialed in on your vice long ago you forgot doing it.

Hi rodw, thanks for the response. I think you are missing the problem so please allow me to clarify.

On my Tormach, this process makes perfect sense. I touch off with a probe or tool or edge finder or whatever, and then hit the zero buttons in the GUI. This sets the DRO readout to zero, puts the work offset origin symbol in the workspace viewer at the current position, and populates the offsets table with the position of the work offset in absolute coordinates. No problems here.

But on my new LinuxCNC mill, this process isn't working. When I hit the zero buttons in the gui, the DRO readout gets set to zero, the work offset symbol in the workspace viewer (3 colored axis arrows) gets put at my present position, but the offsets table doesn't update. It remains unchanged. You can see this in the images I attached to my previous post. More so, if I try to manually enter values in the offsets table, I get an error. I also included this info in my previous post.

Please let me know if there's anything else I can clarify. I understand that this is a bit of a subtle issue and I haven't done the best job of explaining it so far, so I hope this is a little better.

Edit: The mill is already homed in both situations described above. When run in what I call Bridgeport mode, moving the tool around manually and using the readout as a simple DRO, everything functions normally. The gui buttons zero the G54 work offset in the DRO correctly, it's just that the offsets table isn't updating along with this. When I load a G-code file, it appears to be respecting the offsets table G54 offset rather than the DRO-shown G54 offset, so the tool paths are not where I want them to be.

Something sounds odd.
Docs on coordinates are here linuxcnc.org/docs/stable/html/gcode/coordinates.html

I wonder if the .var file is marked read only? This would prevent values from being saved.
Delete it as sometimes it gets stuffed up when setting up a new machine.

If you can't find it, check the file name in use in the ini file eg. for my QTdragon config
PARAMETER_FILE = linuxcnc.var