Re: [foxboro] PI connection type
- From: Ainuddin Ali <ainuddin@xxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Fri, 2 Apr 2010 07:18:56 +0800
for those who're using FXBAIS on P92 Windows XP. do able to read all
COMPOUND:BLOCK.PARAMETER or just PNT, CIN, COUT, AIN, AOUT ?
we're having the problem whereby we are not able to read Boolean input and
output reading from IA.
Regards
AINUDDIN ALI
PRAI POWER PLANT
On Fri, Mar 26, 2010 at 4:43 AM, <Jack.Easley@xxxxxxxxxxxx> wrote:
> This Security Risk with PI Writes has always been a concern for a
> Control Freak (more Control oriented than IT oriented) like me. We no
> longer have this issue as we use Foxboro Isolation Stations that
> eliminate this possibility, but I honestly can't recommend them for the
> added layers of complexity and undependability they introduce with data
> transfer to and from the MESH.
>
> You are correct that if you allow any PI writes, anything can be written
> to the Foxboro and a simple PI configuration typo, or the Bad Actor
> scenario, can bring you down.
>
> Look! I trimmed by response. Aren't I somthin?
>
> Jack Easley
> Sr. I&C Technician
> Luminant Power, Martin Lake Plant
> Phone 903.836.6273
> jack.easley@xxxxxxxxxxxx
>
>
> -----Original Message-----
> From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
> On Behalf Of G.Macdonald@xxxxxxxxx
> Sent: Thursday, March 25, 2010 1:01 PM
> To: foxboro@xxxxxxxxxxxxx
> Subject: Re: [foxboro] PI connection type
>
> Tim,
>
> Are you restricting which points PI can write down to on the DCS from
> within the DCS? I am concerned of the security risk of a compromised PI
> server (it is on the corporate network), or mistakenly configuring a
> point to write to critical points on the DCS. I have found a blurb in
> the FoxAPI documents, but haven't had any luck getting it to work.
>
> To answer further to you comments below, I have configured them as
> buffered writes (location2 is not 0). Yes location3=-3 for the AIN's
> I'm writing to. Yes, I have been starting / stopping the interface after
> making a change.
>
> Thanks,
> Grant.
>
>
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