I've had limited success with the help of this forum. I'm able to create simple images in Easel to my specifications, download the grbl, import into openbuild, connect my mauster pro cnc, set x, y and z successfully and run the job without issues 50% of the time, the other times i get Grbl Alarm: hard limit triggered. machine positiion is likely lost due to sudden and immediate halt.... [11:02:54] [ ALARM ] ALARM: 1 - Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended. [ undefined ] [11:02:54] [ ] ALARM: 1 - Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended. [ undefined ] [11:02:54] [ ] ALARM:1 [11:02:54] [ ] [MSG:Reset to continue] [11:02:54] [ ] Grbl 1.1h ['$' for help] [11:02:54] [ ] [MSG:Check Limits] [11:02:54] [ ] [MSG:'$H'|'$X' to unlock] [11:02:55] [ [clear alarm] ] Operator clicked Clear Alarm: Cleared Lockout and Emptied Queue [11:02:55] [ ] Grbl 1.1h ['$' for help] [11:02:55] [ ] [MSG:Check Limits] [11:02:55] [ ] [MSG:'$H'|'$X' to unlock] [11:02:55] [ ] [MSG:Caution: Unlocked] [11:02:55] [ ] ok I clear the errors and run, sometimes it finishes, most the time, i just get the same error or a version of this. I'm looking to learn to fish here, but a fish to eat now would be nice. I'm a programmer by trade so i know the hardware/software is not happy, but what are the probable causes? I need to understand how to debug these issues and would appreciate guidance to documents/faqs/forums to learn how to interpret. btw - i see this Z-Limit status message, can anyone guide me to understand this?
tanks for the quick response! Your comment makes sense as it seems random although many of the errors do appear to hit at the exact same spots on the cuts. I read up in the linked document that grounding the cnc is a good first step. what exactly would i attach a ground wire to? the chasis is aluminum?, the brain box? they also recommended Xtension Limit switches with onboard EMI filtering, do you think this would help? thanks again.
The Xtension limit switches are definitely a worthwhile investment. If it is emi then identifying the source is a better solution than trying to shield things though, especially as, if badly done, it can make things worse. Do you have a VFD/spindle? If so where have you put the VFD to spindle cable? If it, or the mains cable if you have a router, is in the drag chain take it out and suspend it above the machine as far away as possible from any low voltage wiring. Likewise with the VFD itself, or mains wiring, - keep them away from the controller electronics and low voltage wiring Alex.
. Do you have a VFD/spindle? I have a separate powerful router that I plug in separate from the CNC itself. I took your advice and suspended the power cord with same results. It's so dry, I wonder if I'm generating static electric causing the issues?
Static is another possibility, although more common if you have dust extraction. Good advice in the link @Peter Van Der Walt gave, and definitely get those Xtension switches. Alex.
thanks again. I've just ordered a dust extraction kit as wife is tired of sawdust everywhere... I'll oder the Xtension switches, do they come with instructions as to how they are installed/wired? the concept makes sense, but I have no idea where they go/how they connect.... I've also ordered new cable to connect to my laptop, just to eliminate that as a issue.
Here is a video, docs:xtensions:limits [OpenBuilds Documentation] And how to connect them. docs:blackbox-x32:connect-xtension-limit [OpenBuilds Documentation]
I think you guys helped me figure out the reason and solutions to this problem. I thought about what you said regarding the error messages and it seemed to me they were all z-axis related. I thought about it and I've always been eyeballing the z-axis zero setting for z. So I got a 15 mm z probe hooked it up and use the wizard to set the z, lo and behold. When I ran some tests it was much better. Then I went into the cut design and changed everything to millimeters. Instead of using inch, I use my caliper to measure accurately the depth of the wood and then I reset everything to match that regenerated my g code and ran that in open build using the z probe again lo and behold nowhere cut out the tabs didn't flip out like it did before so I think I'm on to something. Thank you so much for all your help
