I've found that generally, this works for crude measurement, but depending
on processor loading and maybe some other factors, the timing gets off. I
sometimes use an accumulator block which seems to adjust for varying
execution times better. I assume you have a high alarm or some other
Boolean signal to represent overflow. One way is to tie the Boolean to the
Hold and put a 1.0 in the meas input and set the mtrfac appropriately.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Burnham, Rob C.
Sent: Thursday, February 01, 2001 3:32 PM
To: 'Foxboro List'
Subject: Block Scan Time
Can a blocks scan time be used
to accurately count? I am trying to
to count elapsed seconds of overflow
on a tank, the scan time for the block
is 1 second and I increment a memory
register by one on each scan.
Is this accurate?
Rob Burnham
P. H. Glatfelter Co.
920 727-2426
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