LinuxCNC + Orange Pi (allwincnc)

Hi Bari,
I manually setting zero point when I starting every milling.
So I took semi-finished product and fastened it on my CNC machine.
Then I manually set zero point of X, Y, Z axis. (the dimensions of the part I milled were about 40x40mm and and my working place is 400x500mm)
Then I run the program / Gcode. Program ran, machine milled the part. ... then like I said .. without doing anything or some kind of machine collision happened machine suddenly stopped during the milling process (for example somewhere in the middle of Gcode) and one of my X or Y or Z coordinates change in LinuxCNC from Gcode value to (for example '' 209715mm ''). 
When this happened, machine was stopped and didn't allow me to move with that axis. I must re-home the axis to ''zero''.

I don't understand why the position suddenly jump from value about 40mm to 200000mm. 

But like I wrote... I was mill another part (different Gcode) and then the machine was working fine.

M.

Yeah, that is odd. Has it only happened with that program? Does it happen every time you run the same program? Same line in the program causes the error or at random points?

Hi Bari, It happened only with that one program. The error cause not on samé line of Gcode but on different.

Hi MLc,

Good to see still has some people get interest with this project. By the way, your expansion board looks great!
Would you like to upload you gcode here, I can put it to my Pi and get it try, see the same thing happen to me.

Hi envyvan, sorry for my inactivity, i forgot to send it. 

Hi Mlc,

I don't have ATC on my machine so I have to remove some gcode, then I try it several times.
It works with no issue, I don't have the your position jumping problem.
Which os you are currently using? May be you will need to do some system optimize if you have come up with this issue all the time.