[foxboro] AIN Block Invert

I have an AIN point that is inversely proportional to a level.  Does anyone
know if I can invert the reading to the .PNT within the block, maybe using
KSCALE and BSCALE?  I thought BSCALE of -100 and KSCALE of -1.0 should work
but I just get BAD I/O readings when I do it.  I want the scale to be 0 -
100%.  When I get 4 mA, I want to show 100% and when I get 20 mA I want to
show 0%.  Thanks for any help.

> **********************
> Michael Telgenhoff    Midland Plant Process Control Engineer
> Dow Corning Corporation       Voice:  989.496.6855
> 3901 S. Saginaw Rd.   Pager:  989.926.2706
> Midland MI 48686-0995 Fax:    989.496.1897
> mailto:michael.telgenhoff@xxxxxxxxxxxxxx
> **********************
> 


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