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<== Date ==> <== Thread ==>

Subject: Re: Naming Conventions and Control Logix
From: Rolf Keitel <rolf@triumf.ca>
To: tech_talk <tech-talk@aps.anl.gov>
Date: Fri, 12 May 2006 09:21:49 -0700
We have a similar situation with our Modicon PLCs.

Our EPICS record naming convention goes like <subsystem>:<device name>:<channel>
The equivalent PLC tag is named <subsystem><device name>_<channel>
Example: IMS:TP13:ATSPEED <==> IMSTP13_ATSPEED


- rolf -

John Dobbins wrote:

ControlLogix Users,

I am wondering what folks do about ControlLogix Tag names when it comes to naming conventions.

1) As I understand it ControlLogix Tags names may contain underscores, letters, and numbers. Most naming systems include other separators such as hyphens, colons, periods. So what happens when these two meet?

2) Many times a ControlLogix tag has a corresponding EPICS database record. How do you distinguish these names, i.e. the Record name and the Tag name? Or are they the same and distinguished by context?

Thanks,

John Dobbins
Lab for Elementary Particle Physics
Cornell University




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| Rolf Keitel, TRIUMF         Tel: (604) 222-7453 |
| Group Leader ISAC Controls  Fax: (604) 222-7307 |
| and Electronics Development                     |
| Vancouver, B.C., Canada                         |
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References:
Naming Conventions and Control Logix John Dobbins

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