G92 messing up the coordinate

I use G92 all the time on my plasma table so I know it does not mess up my coordinate system. Can you attach a bit of code that will reproduce the problem so we can help you?

John

As John said...

I use G92 all the time on my plasma table so I know it does not mess up my coordinate system

So do I on my router, mill and lathe without a problem.

You might want to look here..
linuxcnc.org/docs/html/common_User_Concepts.html#r1_5_3

Rick G

Hi John,
I write single command on the MDI screen. It will do its black magic everytime.

G92 Zxx.xx (xx.xx being any number, + or -ve)

That is all I need to do to screw everything up.

Hi Rick,
Thank for the pointer, will dig deep into the links you attached.

Thousand thanks.

Ken

Gee, can you be a bit more precise than "black magic" G92 Z anything works as expected for me and everyone else.

John

John,
I have no idea what is the word to describe it...

I get “exceed join'ts limit" faithfully whenever I issue a second G92 command every time & if I ignore it & continue working, the machine will go to coordinates which are totally outside of all the soft limits.

This happens the same with V2.3.4 on 8,04 & the current 2.4.7

I have no intention to act like I'm cute or funny... but honestly, I have no other words to describe the mess made after I issue a G92 single command from the MDI command bar... everything is a mess & as these software "vocab" is voodoo to me...


Rick, I am not re-setting the machine co-ordinates, I still need the coordinated to remain so that the machine won't rush out of the soft limits. SO that G43, G49, G53 are not the things I want... I just want to re assign the work co-ordinate & not the machine cordinates.

Regards

Ken

Ok, Do you have a G54 offset in effect for the Z axis? In 2.4.x go to Machine > Zero Coordinate System and zero out the P1 G54 (which I assume your using).

Also, do you have a tool loaded with Tx M6 G43?

John