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Posted by on December 1, 2006, 7:06 pm
>.p.jm@see_my_sig_for_address.com wrote:
>> wrote:
>>
>>
>>
>>> Sounds like it took an electrical spike and blew out the eprom
>>
>> Nah - you'd have no comm at all.
>>
>
>Seems that... as I recall... a 'no-count' at an analog input will give
>you a number very similar....
>
>A scaled but open 4-20 on a 8 bit processor, perhaps?
>
>Jake
It's a simple thermistor in a stock pre-configured VAV box
controller, I forget the specs offhand. I seem to recall it does that
-327 on open, and will show 999 on short. All depends on how the
point is mapped in software, of course - you could scale it any way
you want. So, 'open' is most likely, as you say.
--
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