EPICS Home

Experimental Physics and Industrial Control System


 
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: RE: SNMP and APC rack power distribution units
From: <[email protected]>
To: <[email protected]>, <[email protected]>
Date: Thu, 24 Jun 2010 14:31:58 +0100
Hi Elliot,

I went through this about a year ago. We have the APC units (AP7953 and
AP7957), and I use SNMP to monitor the current (and hence power).

The version of devSnmp on the DESY website is only good for trivial
applications - it has a lot of problems if there is significant traffic.
However, Sheng Peng sent me an update that he had done that worked much
better. I forwarded this on to Matthais to be merged in with the one on
the DESY website, but he was obviously a bit busy that day :-). At
least, it never got on to the DESY website. If he wants to do it now, I
would appreciate it otherwise there are two files on our downloads area:

http://controls.diamond.ac.uk/downloads/misc/snmp.tgz

http://controls.diamond.ac.uk/downloads/misc/snmp_desy.tgz

The first is the file that Sheng sent me. The second is basically the
same but re-arranged to be slightly more standard and reflect the
directory layout from the previous DESY release - it is slightly easier
to merge in with the previous release, and so I prefer its structure.

If you want an APC database I can send it to you, but I only monitor the
power and that is trivial - poll an Ai with the following fields:

  field(DTYP, "Snmp")
  field(INP, "@$(device) public .1.3.6.1.4.1.318.1.1.12.2.3.1.1.2.1
Gauge32:")

This returns the Phase 1 current in 10ths of an amp. To read the Phase 2
or Phase 3 currents, replace the last digit of the OID with a 2 or a 3.

Cheers,

Nick Rees
Principal Software Engineer           Phone: +44 (0)1235-778430
Diamond Light Source                  Fax:   +44 (0)1235-446713 

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of Elliott Wolin
> Sent: 24 June 2010 14:06
> To: [email protected]
> Subject: SNMP and APC rack power distribution units
> 
> Hi,
> 
> We're thinking of using APC Ethernet-controllable rack power 
> distribution units.  One of the many ways you can talk to them is via 
> SNMP. 
> 
> Has anyone used these or similar units?  And what is the 
> status of EPICS 
> communicating via SNMP?
> 
> Thanks,
> 
> -- 
> 
> 				Sincerely,
> 					Elliott
>  
> 
> ==============================================================
> ==================
> 
> 
>  Those raised in a morally relative or neutral environment will hold
> 		    no truths to be self-evident.
> 				   
> 
> Elliott Wolin
> Staff Physicist, Jefferson Lab
> 12000 Jefferson Ave
> Suite 8 MS 12A1
> Newport News, VA 23606
> 757-269-7365
> 
> ==============================================================
> ==================
> 
> 

-- 
This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail.
Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. 
Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message.
Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
 





References:
SNMP and APC rack power distribution units Elliott Wolin

Navigate by Date:
Prev: SNMP and APC rack power distribution units Elliott Wolin
Next: Re: SNMP and APC rack power distribution units Matthieu Bec
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: SNMP and APC rack power distribution units Elliott Wolin
Next: Re: SNMP and APC rack power distribution units Matthieu Bec
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  <20102011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024