Re: [foxboro] Documents
- From: "Deo, Terry" <Terry.Deo@xxxxxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Fri, 11 Oct 2002 12:16:31 -0400
A word of caution about textedit. Opening a file with the read_only =
parameter applies only to that file! If an operator opens another file =
from the textedit menu that file will be read/write. Since by default =
they are running as root, this is very dangerous. Having said that, we =
do use textedit to display documents (like interlock lists etc) to the =
operators but I had to secure the file access as follows:
When the document is requested via the FoxView menu a script is run that =
su's to a dedicated user ID that is configured to use the rksh, =
restricted shell. Under this ID and shell the operator only has access =
to the home directory where the data files reside. This is not fool =
proof in that the operator can modify any of the data files in this one =
directory but at least cannot get to other critical system files.
Terry J. Deo
Process Control Systems Engineer
Infineum USA L.P.
Bayway Chemical Plant
Phone: 908-474-6179
Fax: 908-474-7609
=20
-----Original Message-----
From: wcricker [mailto:wcricker@xxxxxxxxxxxxx]
Sent: October 11, 2002 11:39 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Documents
A couple of thoughts on ....
- Acrobat file creation is done with some pricey software. They
give away the reader to market the creation software.
- I like the Netscape idea; document management people like the
fact that that it can't modify files which could then be printed,
it is an interface everybody knows, commercial work processors
already have functions to convert to HTML, installation is not
too difficult, and the operator can't browse to the world unless
the AW/WP is modified with 2nd e-net port, DNS, DNS servers, and
all that, file sources can be on any system on the network (like
a standard PC out there somewhere), it shows the same stuff on
and PC boxes, it is easy to call up from DB or FoxView, etc.
Also, this can handle some of the PI kind of stuff. It can be
used to mix other vendor's data screens with IA on a single
console.
- Text Editor ; '/usr/openwin/bin/textedit -read_only ... ' works
pretty well, but also gives bored operators the ability to
'open' and view anything on the system. (doesnt cause problems,
per se, just questions.) (can the 'open' be shut off?). Also,
the content of the file can be modified and printed, which could
be a major headache to Doc Management folks.
- The DM/FoxView 'read file' stuff requires that you convert your
text files to "Blocked Text", that is every record must be the
same length, padded out with spaces, and no 'CR/LF' line
termination. You have to create a display object for each
and every line on the screen, and it can be tough to get them
all to look good when you scroll through the file. Also,
of course, you can't mix graphic images in any generic
screen very easily. It is, however, in the same window as the
DM/FV graphic, and is the most secure.
William C. Ricker
FeedForward, Inc.
Marietta, GA, USA
wcricker@xxxxxxxxxxxxxxx
770-426-4422
>
>Here are the possibilities that come to mind:
>
>Adobe Acrobat reader. ....
>
>You might also investigate a Web browser. ....
>
>text editor, preferably in some kind of read-only mode.....
>
>All of the above, unfortunately, have the disadvantage that they are
>separate windows that can occlude your DM/FV window, and may not work =
at
>all in full-screen mode.
>
>The "read file" function in DM/FV. I haven't played with this myself, =
so
>cannot comment on its complexity.
>
>Corey Clingo
>BASF Corp.
>
|---------+---------------------------->
| | "Stear, Bo" |
| | <stear@xxxxxxx> |
| | Sent by: |
| | foxboro-bounce@fr|
| | eelists.org |
| | |
| | |
| | 10/11/2002 08:58 |
| | AM |
| | Please respond to|
| | foxboro |
| | |
|---------+---------------------------->
>------------------------------------------------------------------------=
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| To: "Foxboro Mail Forum (E-mail)"
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| cc:
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| Subject: [foxboro] Documents
|
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What, if any, are the best methods to give access to documents such as
SOP's to operators from the Foxboro Workstation screens? Their simple
request is to be able to punch a button on a display and have the SOP
appear on the screen. I assume a complicated resolution......
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Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
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