Re: [foxboro] oma?
- From: Terry Doucet <doucet427@xxxxxxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 24 Mar 2015 08:02:52 -0400
Joseph,
As Alex has stated, the omgetimp is much better than omget alone as the "IMP"
uses the import table to prevent constant broadcast on the network. (Every CP
must respond to every broadcast) Six omgets, every 2 seconds might overload
your CP's, depending on type of CP.
Over the years I have initiated many scripts and programs to collect data as
you are wishing to collect data. With omget, I always paused for 1 second
after each omget. If your import table is not full, you should be OK without
the pause but you might start with a pause after 3 omgetimp.
I used the word initiated above, because I am not a good programmer or even
script writer but I know what I wanted and I had a pretty good understanding of
how not to kill the system. I always sought out a new hire in the company,
usually directly out of university where they spent plenty of time writing code
or batch files, C+ stuff or the like on Microsoft based machines. Sometimes I
had to guide them through UNIX but usually they were fine if I kept them under
close watch to make sure they did not get too fancy and try to overload my AW.
You might have to figure out how you want to toggle it ON and OFF or schedule
it but the kids can write great code.
The IT departments have keen kids that I managed to grab on my team for a few
hours. Gave me plenty of time to talk to the kids about how critical these
Process Control Systems are and how we need to be very cautious about any
change to the system.
It really helps if you have an off-line AW with C:B.P same as the live system
for testing before going live.
Terry
> From: Joe@xxxxxxxxxxxxx
> To: foxboro@xxxxxxxxxxxxx
> Subject: [foxboro] oma?
> Date: Mon, 23 Mar 2015 12:57:27 -0700
>
> Folks,
> I never claimed to be a programmer so.
>
> It has been a couple of years since I have used oma but I would like to
> collect the values of about 6 valves every couple of seconds for about a
> minute during a short test. From memory, I can use oma to build a table for
> all 6 valves but how do I get it to run every couple of seconds? Or is
> there a better way for a non-programmer?
>
>
> Joseph M. Riccardi
> 386-451-7607 Cell
>
> Joe@xxxxxxxxxxxxx <mailto:Joe@xxxxxxxxxxxxx>
>
> "To give real service you must add something that cannot be bought or
> measured with money; and that is sincerity and integrity." - Donald A. Adams
>
>
>
>
>
>
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