Re: [foxboro] Matrikon OPC Server for Foxboro I/A
- From: "Russ Kaiser" <russ@xxxxxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 15 Mar 2011 16:39:43 -0400
Dave,
Are you going to use OPC connectivity for control or data acquisition?
We use Matrikon OPC servers for data acquisition as part of our current
off-platform InSQL historian. I am getting ready to reconfigure this system
now, but if I had it to do all over again, knowing what I know now, I would
avoid redundancy. This has nothing to do with Matrikon per se, but it seems
keeping our redundant systems talking correctly and keeping them from double
dipping is a chore. I know of one plant that had to settle for letting both
OPC servers of a redundant pair collect all tags because the alternative was
that neither would reliably connect.
If you are just going to use OPC to gather data, take the dollars available
and buy as many baskets as possible and then logically divide your eggs
among them.
Russ
>-----Original Message-----
>From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
>Behalf Of dave.caldwell@xxxxxxxxxxxxxx
>Sent: Tuesday, March 15, 2011 1:09 PM
>To: foxboro@xxxxxxxxxxxxx
>Subject: [foxboro] Matrikon OPC Server for Foxboro I/A
>
>Hello List,
>
>Does any one have any experience with the Matrikon OPC Server for Foxboro
>I/A?
>
>I am interested in the following:
>* Whether or not you are using the FoxAPI or OM API version?
>* Are you on Solaris or Windows? Which model AW?
>* Are you on nodebus or MESH?
>* What is your I/A version?
>* How many points collected, update frequency, and for what purpose?
>* Has the server been reliable?
> o How long has it gone without issue?
> o How often do problems arise?
> o What has been the symptoms and sources of trouble?
>* Are you using primary, distributed load, or stand-by server option?
>* Are you using COM (client local to server), DCOM, tunneling, or other?
>* Are you specifying a delta value and a scan rate for each point?
> o If so, does this mean the OM scanner in the remote station will scan
>.......the OM list for changes greater than delta every x seconds, and
>.......report a change to the station requesting the object?
> o Is delta specified in engineering units?
> o Is scan rate in seconds?
> o If no attribute is specified what are the defaults?
>* Is there a way to make the FoxAPI or OM API AW redundant? In other words,
>should something happen to the collector AW can a backup AW be
>automatically brought on-line to collect the points for the OPC Server?
>
>Thanks,
>Dave
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