[foxboro] Nodebus Bandwith / Connections
- From: John Miller <JMILLER@xxxxxxxxxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Thu, 20 Jun 2002 10:18:48 -0500
I'm trying to do some planning for a future job and I was wondering which of
my options put the least demand on the system. The first option would be to
use a LOGIC block to check the status of six binary inputs, run an operation
and then output the result in a form where .BO1, .BO2, and .BO3 would equal
one to indicate the result. All three binary outputs would be read by a
CALC block in another CP.
The second option would be to take the same six binary inputs, run a
slightly different program and output the result to either the LOGIC block's
long integer output. The result would be a number 0-3 indicating the result
and would be picked up by a CALC block in another CP. The resulting number,
0-3, would equate to binary outputs .BO1 - .BO3 in the previous option.
The third option would be to use .BO1 and .BO2 to output the resultant 0-3
encoded in binary. That result would then be picked up by a CALC block in
another CP.
This same type of operation may get repeated several times in many
compounds, which is why this might eventually become an issue. I guess the
question boils down to whether it's more efficient to transfer the three
binaries to another CP or send the data as a long integer or encode the
information in two binary outputs?
Thanks,
John Miller
Hunt Refining Company
1855 Fairlawn Road
Tuscaloosa, AL 35401
205.391.3345
jmiller@xxxxxxxxxxxxxxxx
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