In the Hal/Basic Configuration section of the Integrators Manual

Changing the polarity of a signal

If external hardware expects an ``active low'' signal, set the corresponding 
-invert 
parameter. For instance, to invert the spindle control signal:

    setp parport.0.pin-09-invert TRUE 

John

On 25 Nov 2009 at 7:50, Pat Lyons wrote:

> I got my mill working yesterday only to find out that the x-axis
> is
> backwards and mills mirror images of what I intended.
> 
> I tried flipping "OUTPUT SCALE" 's polarity but it didnt seem to do
> anything
> at all...  I went looking for some other ini or hal file change to
> make and
> couldnt find any.
> 
> Any suggestions?
> 
> Thanks!
> This mailing list is truly awesome.
> (thanks for all the help!!!)
> -pat
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