Re: Re: G92 test results

>    From: "Les Watts" <leswatts@...>
> Subject: Re: G92 test results
>
> Some preliminary results from testing offsets...
>
> A g92 offset persisted through a total linux shutdown so it
> was written to the .var file. But offset display was ZERO
> and g92 was NOT in the list of active modal commands
> near the bottom of the screen. It was there and in effect
> as far as machine motions though.

If the offsets are active when you shutdown the EMC they will be written to the var file.

> When another offset was performed by touching off and
> issueing G92Z0 the offset display indicated the current offset
> PLUS the previous one just mentioned.



> A G92.2 was issued in MDI and removed all offsets as well
> as zeroing the display and removing G92 from the active command list.
>
> Another touching off and MDI G92Z0 resulted in proper operation.
> An M30 issued from MDI removed it from the offset display and
> active modal list but did NOT remove it from the control. I tested
> this by doing some MDI G1 moves. It was persistent.
>
> I don't know whether this behavior is time invariant. This is the first
> time I saw offsets persist through a shutdown.Could it be
> that we have a persistent G92 cancelled by G92.2 that DOESN'T
> SHOW UP IN THE DISPLAY? That would surely cause great
> confusion.
>
> I think most of the relevant code is in rs274ngc.cc in the
> convert_stop() function. Check it out.
>
> This is BDI 2.14+.
>
> More tests as I have time.
> I am determined to get to the bottom of this.
>
> Leslie Watts
> L M Watts Furniture
> Tiger, Georgia USA