Re: [foxboro] FXBAIS vs PI OPC Interface

Yes, PI fxbais can be setup to be read-only. Sadly, in our case it is
not. So use of PI read-only from the MESH with a good Firewall is
relatively secure.

However, even if PI access is set up read-only, you should not forget
the matter of additional loading of your control system when PI tags are
added by the PI administrator. We experienced problems with this when at
Version 6.12 NODEBUS with loaded CP30/40s and Integrator 30s.

I don't think AIM is involved with the PI fxbais Interface, only FoxAPI.

Jack Easley

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Johnson, Alex P (IPS)
Sent: Tuesday, June 24, 2008 1:05 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] FXBAIS vs PI OPC Interface

Re: Read-only and FoxAPI (and AIM*API for that matter)

It is possible to configure read-only access using FoxAPI. This
configuration is done in the /opt/fox/ais/bin/an_init.tcp file on the
machine running the netFoxAPI Server (an_server).

If this is set, it does not matter what PI is configured to do, the data
will not be written.

For AIM*API, the file is /opt/aim/bin/an_init.tcp.

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