If you search thru the pins for your cards in the hal configuration located in 
the machine menu while running linuxcnc maybe you find it.

On Thu, 19 Jan 2017 12:09:27 -0500
Curtis Dutton <curtd...@gmail.com> wrote:

> I'm writing a laser rastering component, which I will share when it is
> working.
> 
> It scans across the x axis but I can't find the pin that corresponds to the
> value shown in the gui for the actual X value with all offsets etc...
> added.
> 
> The joint.pos-cmd, et all... is the absolute position on the physical
> joint, but I want the logical X value.
> 
> 
> Is there a hal pin that exposes that value? (I'm using the axis ui)
> 
> 
> Thanks,
>    Curt
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