Messages

1

General Mach Discussion / Re: How to correct losing steps?

« on: November 25, 2019, 05:15:54 AM »

OK... so i opened up the box, swapped the X and the Y cards over and the connections etc. Plugged it all back up. Ran the same program again. Returns to zero. ran it again twice more... returns to zero.

i will do a longer run tomorrow. but could have unplugging the cards done anything. like reset the chips or something?

2

General Mach Discussion / Re: How to correct losing steps?

« on: November 24, 2019, 06:42:14 PM »

oh ok - motors are something im not very knowledgeable on. I still dont think its the motors as ive seen people carve up aluminum with that same machine no dramas. i will investigate swapping the drive boards over and see what happens from there./ thanks

3

General Mach Discussion / Re: How to correct losing steps?

« on: November 24, 2019, 06:34:47 PM »

ah ok - physically swap the drive boards for x and y?

4

General Mach Discussion / Re: How to correct losing steps?

« on: November 24, 2019, 06:32:48 PM »

57BYGH76-3A/150N.cm is apparently the stepper motors on the machine

5

General Mach Discussion / Re: How to correct losing steps?

« on: November 24, 2019, 06:30:28 PM »

I did state it does the same thing under no load. therefore i dont think the stepper is too small for the task being asked of it.

6

General Mach Discussion / How to correct losing steps?

« on: November 24, 2019, 04:58:23 PM »

Im going nuts trying to figure this out lol. So my cnc will not maintain its position on the Y axis after running a program. It looks almost as if each pass (on this particular program) is losing around 0.1mm. So after running 40 passes im out about 4mm. When the material is cut it cuts one side narrow, and one side elongated ( as it grows that side slowly). However.. it does not always do it. there are odd occurrences when it runs perfectly (or very close to it) but most times it is constantly losing steps.

Machine - OmioCNC X6-1500 USB.
Currently running on acer aspire laptop with XP installed with standard processor not ACPI.

I have tried 2 different PC's (same result)
swapping stepper motors between x and y (same result)
lowering acceleration and speed (same result)
increasing pulse width and the other option next to that up to 5 (same result)
Swapping cables (same result)
running program with and without load (same result)
Setting Mach3 to have realtime process priority (same result)

I have a few ideas but i cannot test these without spending more money.
try another PC.
try a UPS.
Give up and buy a new machine (which will happen but cannot affords it atm)

Any idea's on what to test or how to fix this issue.

7

Mach3 under Vista / Re: Losing Position during running. win7

« on: November 12, 2019, 02:35:55 AM »

UPDATE: So because my win7 pc cannot be changed to standard pc from ACPI i have dug out an old laptop with XP.
I have then changed the ACPI to Standard PC, rebooted (failed) then loaded safe mode (works). There is no where to change in the bios to disable ACPI either.
anyways i have just run my prog again and again and again. every time i am getting about a 10-15mm alteration on the Y axis only.X axis seems fine. I have also lowered the motor speeds on the last test ( same result)

so now i have ruled out ACPI being the problem (or maybe it was contributing who knows) and i still have the problem.

Any ideas?

I am running through USB - would changing the baud rate do anything? ie: going from 25hz to 100khz? I think this is more LTP stuff.

8

Mach3 under Vista / Re: Losing Position during running. win7

« on: November 11, 2019, 08:50:57 PM »

thanks for the clarification on drivertest.exe

9

Mach3 under Vista / Losing Position during running. win7

« on: November 11, 2019, 04:51:35 PM »

Hi all, Ive got a OmioCNC x6-1500usb (chinese cnc) running mach3. Ive had it for years and never really had a problem, but currently i am close to ripping out whats left of my hair lol.

Im setup on Win7 64bit (never had any drama running the cnc on it or setup), but im finding the cnc is losing its position (losing steps?) randomly during the operation. The code is flawless.

Ive been reading about changing ACPI to standard processor, but im running a gigabyte brix 1900 - and for the life of me i cannot see how to change this. there is no option or driver compatible for it. also ive been reading to run a drivertest - well i cannot find drivertest.exe anywhere in my mach3 folder, and i downloaded mach3 again and there is no drivertest.exe either.

ive played with the motor tunings and slowed everything down etc, but it still occurs. The connecting point from the steppers to the axis are solid and its not slipping physically.

any ideas on what i can do?

10

G-Code, CAD, and CAM discussions / Re: Conditional programming

« on: March 20, 2018, 11:31:33 PM »

BAM!!! Needed a ‘%’ after M30 and M99 and it looks promising.