Feature Request

Oops, I am blind

Can you try with it with [JOINT_3]HOME = -0.2

I learnt something today from your config, previously I was always under the assumption that HOME_OFFSET was required to be within or equal to the soft limits. Now I need to fix the PlasmaC docs...

phillc54 wrote:

Oops, I am blind

Can you try with it with [JOINT_3]HOME = -0.2

Sure can, do I need to update or anything first? Or just change that value?

I learnt something today from your config, previously I was always under the assumption that HOME_OFFSET was required to be within or equal to the soft limits.

Well if whatever I did in my config seemed like a stroke of brilliance on my part I can assure you it was an accident...it was

Now I need to fix the PlasmaC docs...

We need to find a way to keep those in sync... or maybe you can send me the changes and I will work them into the doc I am editing? Hopefully we can avoid my editing a doc that's too far out of date haha. Open to suggestion.

snowgoer540 wrote:

Sure can, do I need to update or anything first? Or just change that value?

Yep, just change the value.

We need to find a way to keep those in sync... or maybe you can send me the changes and I will work them into the doc I am editing? Hopefully we can avoid my editing a doc that's too far out of date haha. Open to suggestion.

Shoot, I forgot about that. I'll think of something...

Changed to -0.2. Seemed to work fine now!

Why does that make a difference??

snowgoer540 wrote:

Changed to -0.2. Seemed to work fine now!

Why does that make a difference??

As Dewey pointed out to me a while ago, when offsets are active the axis should not go near the soft limits. I set the maximum Z offset to 5mm (0.0196") below X max. In your config the Z home was 0.001" below the Z max while still active.
I will need to fix the docs and maybe have a popup warning when LinuxCNC is loaded when it finds the settings may cause issues.

phillc54 wrote:

snowgoer540 wrote:

Changed to -0.2. Seemed to work fine now!

Why does that make a difference??

As Dewey pointed out to me a while ago, when offsets are active the axis should not go near the soft limits. I set the maximum Z offset to 5mm (0.0196") below X max. In your config the Z home was 0.001" below the Z max while still active.
I will need to fix the docs and maybe have a popup warning when LinuxCNC is loaded when it finds the settings may cause issues.

One thing I dont quite understand is when I home my Z now, it parks it -0.2 down, but I can jog up past that. To 0.050" below the limit switch.

my X and Y are set up similarly to how Z was. Do they need to be changed?

snowgoer540 wrote:

[One thing I dont quite understand is when I home my Z now, it parks it -0.2 down, but I can jog up past that. To 0.050" below the limit switch.

Because that is the max limit. If you start a program from that position then you will likely see this issue.

my X and Y are set up similarly to how Z was. Do they need to be changed?

No they should be fine.

phillc54 wrote:

Because that is the max limit. If you start a program from that position then you will likely see this issue.

It doesn't appear to cause the issue for whatever reason. But I don't want to tempt fate, so how do I prevent it from letting me park it that high then? Because I'm used to jogging it to the top before doing a run.

I'm not fully wrapping my head around what's going on here, for some reason.

You could just home your machine and leave the Z axis where it is.
It is probably my explanation...

Edit: do you use a pendant?

phillc54 wrote:

You could just home your machine and leave the Z axis where it is.
It is probably my explanation...

Edit: do you use a pendant?

True, but I often jog the torch down so I can see where it's going to end up when I'm touching off. When I jog back up, it doesnt stop at the -0.2, goes happily up to where the offset is from homing.

No pendant here..yet