Experimental Physics and Industrial Control System
---------- Forwarded message ----------
From: Paul Sichta <[email protected]>
Date: Wed, Oct 10, 2012 at 1:05 PM
Subject: Re: Tagnames
To: Jeřábek Jiří <[email protected]>
Jiri,
For the ITER project there is a document at
ftp://ftp.iter.org/permanent_files/io_in_cad/.../SD03_v7_4.pdf
Signal and plant system I&C Variable Naming Convention
If you are questioning restrictions about the record name itself
=================================================
You can search for answers to your EPICS questions at tech-talk:
http://www.aps.anl.gov/epics/tech-talk/index.php
Two relevant messages which are so old they may be wrong:
name length is 60 chars:
http://www.aps.anl.gov/epics/tech-talk/2005/msg00083.php
characters in PV names:
http://www.aps.anl.gov/epics/tech-talk/1994/msg00105.php
The '_' underscore is a reliable name-delimiter.
There is a Record Reference manual at:
https://wiki-ext.aps.anl.gov/epics/index.php/RRM_3-14
Strangely it does not mention PV or record name rules/restrictions.
EPICS R3.15 will likely have this info defined somewhere, and perhaps
be less restrictive.
If you use an EPICS gateway you can specify an alias (name) for a record name.
Good luck,
-ps
On Wed, Oct 10, 2012 at 11:05 AM, Jeřábek Jiří
<[email protected]> wrote:
> Folks,
> There is a time here to think about tagnames (names of entities ) for the ELI
> control system.
> Technological subparts are roughly: cryo, vacuum, laser beam distribution,
> etc.
> I have a long time industrial experience with a commercial DCS and SCADA
> system but I am a novice with EPICS.
> Could anyone from the community discuss with me the EPICS approach and its
> syntactical rules?
> Is the matter completely described within records description, or are
> there other points where to be careful?
> It will be surely an iteration so as a starting point I would appreciate an
> EPICS web link to the relevant document.
> Maybe somebody has implemented system tagnames. His advices (or a related
> document) could be of the most value.
>
> Thank you for help,
>
> Jiri
>
>
>
> Jirií Jerabek
> SCADA Specialist
> ELI Czech Republic
>
>
> m: +420 702 004 857
> e: [email protected]<mailto:[email protected]>
> w: www.eli-beams.eu<http://www.eli-beams.eu/>
>
> Institute of Physics
> Na Slovance 1999/2
> 182 21 Praha 8 - Libeň
>
> Czech Republic
>
>
>
>
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