[foxboro] ALMSTA bit mask

I am trying to force a controller to hold when it gets a deviation
alarm. According to FoxDocs I should be able to XOR bits 20 and 21 of
the ALMSTA word. 
HOLD = :BLOCK.ALMSTA.XH0300 is what I think should work, or possibly
HOLD = :BLOCK.ALMSTA.XH0C00.

I have tried every combination of masks that I can think of and can not
get this to work. Any help would be appreciated. 

Regards,
Bob Wingard
Inland Paperboard and Packaging


 
 
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