Ab 1746 16i Analogue Input Card

pauly

Member
Join Date
May 2002
Location
South Wales,U.k
Posts
244
Could any one tell me how the Allen Bradley 16 input analogue card can be set up as ''class 3''? Also why is there a distinction between class 1 and class 3? The card part numbers are the same!!
Pauly
 
It is the one card. It is the software initialisation word you send to the card that makes it a class 1 or 3. Class 3 uses more words in your data table but does return more info. Read the manual again with this in mind. Regards Alan
 
AB 1746 16 NI16I

Thanks for the info, I read the manual and wondered why there would be a need to set the card up as a class 1 anyway? If there are 16 channels with 1 data and 1 status word for each channel, why would there be a needfor a class 1 setting? The use of a lower spec cpu maybe? Any info is greatly appreciated.
Thanks, Pauly
 

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