Re: [foxboro] FXBAIS vs PI OPC Interface
- From: "Kevin Fitzgerrell" <fitzgerrell@xxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Tue, 24 Jun 2008 23:07:53 +0900
Do you have AW51s or Windows workstations?
We use AW51s for our PI bridge FXBAIS locations. Data is buffered
collected by FXBAIS from FoxAPI. Data is buffered on the workstation
- this has been convenient when we've had problems on the corporate
network which connects our AWs to the PI server. We seldom reboot the
AW51s that we have FXBAIS on.
If we were using the PI OPC interface, we would need either an AW70,
an off-platform AIM OPC windows box, or an off-platform Matrikon OPC
windows box. Because we have a large system and do fairly regular
committals, an AW70 would be off-line and rebooting fairly often (as
windows AWs must be rebooted during committals) - this would result in
a permanent loss of data when it was offline. We do use several
off-platform AIMOPC windows boxes. Their uptime has been high, but
not as high as the AW51s. With the off-platform AIM boxes, data is
collected from the AW51s via AIMAPI on the AW. Data is not buffered
at the AW, so the connection between the AW and the AIM box should be
very reliable. Data is buffered at the PI OPC interface, which should
probably be on the same PC as the AIM OPC server. We also have
several off-platform Matrikon OPC boxes. They use a foxsrvr task on
the AW51s to collect data from FoxAPI. We have not found this to be
as robust a solution as the AIM OPC connection to AIMAPI. We do have
to periodically restart the foxsrvr task. Sometimes we have to
restart all systems involved, FoxAPI, foxsrvr and the OPC server. We
have also had problems with the AIMOPC, although in general it has
been fairly solid, but all appropriate QFs must be installed.
OSISoft has said that the FXBAIS interface is not their preferred
solution going forward. They have already stopped supporting one of
our other interfaces - an Allen Bradley RSLINX interface, in favor of
the PI-OPC interface.
Regards,
Kevin FitzGerrell
On Tue, Jun 24, 2008 at 10:29 PM, Aymen LAZAAR <aymen.lazaar@xxxxxxxxx> wrote:
> Dear list,
> We are evaluating the use of FXBAIS and PI OPC Interface as a software
> solution to interface our DCS System (Foxboro I/A system - MESH and Nodebus
> Networks) to OSIsoft PI (based on Real Time data).
>
> In order to choose the right option we may go for, we would like to
> understand the advantages and limitations of each of the two options and
> what are the considerations to look at before deciding on the best solution
> in terms of reliability, efficiency, performance and availability.
>
> Please do not hesitate to share your feedback and thanks in advance.
>
> Regards,
> --
> Aymen LAZAAR
>
>
>
>
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