3.5.0b4 losing XYZ position after print completes?

paralepsis

@droftarts thanks for the catch on M204; I'll have to fix that.

No, I don't think I'm exceeding the capabilities of the machine with those last commands -- the movement/acceleration/jerk settings that are in my config.g are considered conservative for this design. Also, this wasn't happening with 3.4.5 for many many prints.

I've had this happen once more since posting, have started just homing Z so I don't have to think about it (which obviously isn't treating the condition...).

paralepsis

@paralepsis The XYZ motors are LDO-42STH40-1684MAC (https://cdn.shopify.com/s/files/1/0239/9287/files/LDO-42STH38-1684MAC_TIM_RevA.pdf).

paralepsis

To follow up on this, an F5000 Z move would indeed be a problem if the speed weren't capped by the config.g settings, but it is :). I'll clean that up in the stop.g anyway, just so it isn't a distraction in the future.

Thanks again!

droftarts

@paralepsis said in 3.5.0b4 losing XYZ position after print completes?:

No, I don't think I'm exceeding the capabilities of the machine with those last commands -- the movement/acceleration/jerk settings that are in my config.g are considered conservative for this design.

I was thinking more of the physical limits of the print bed, rather than skipping steps.

Ian

paralepsis

@droftarts maybe I misunderstand, but the X/Y move isn't relative, just moves to near the back left corner (xmin is -11 and ymax is 300ish). Notionally the Z could push to Z-max, but the prints in question have been in the ~100mm or less height, and I've got roughly 280-300mm of Z to work with.

gloomyandy

@paralepsis Does your printer have more than one tool? You have T99 in your stop.g, I'm not sure what it is you are trying to do with that, but I wonder if in effect causing a tool change is part of the problem?

paralepsis

@gloomyandy I don't have more than one tool. I was using that as a way to kick the current tool out of active mode...I want to say that M568 wasn't around when I first started doing that, but it's also possible I just didn't find it.

Either way, that would be a regression -- I've been doing that "tool switch" trick on this machine and one other for years w/out issue prior to move to 3.5.0b4.

jay_s_uk

@paralepsis you should use T-1 to unmount the current tool

paralepsis

@jay_s_uk I feel like I got an error trying to do that (way back when), but really M568 P0 A0 is probably the right thing in a single tool printer, yes?

jay_s_uk

@paralepsis to turn it off, yes, thats what i use