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Subject: Re: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernetcommunications? CryoCon RS-232?
From: Richard Farnsworth <rif@aps.anl.gov>
To: Mark Rivers <rivers@cars.uchicago.edu>
Cc: tech-talk@aps.anl.gov
Date: Fri, 13 May 2011 15:06:57 -0500 (CDT)
Jay, Mark

I looked at this a few years ago. At the time (where do the years go!) the Ethernet module only supported the FINS protocol, for which you would need develop EPICS support.
Things may have changed, but I'd read the documentation very carefully and make sure before making any assumptions. FINS is the OMRON native protocol, but don't think you would have a terribly hard time making the asyn framework support it. 

Cheers

Richard Farnsworth

Controls Group leader, 
APS Engineering Support Division, 
The Advanced Photon Source



----- Original Message -----
From: "Mark Rivers" <rivers@cars.uchicago.edu>
To: "Jay Steele" <jsteele@xradia.com>, tech-talk@aps.anl.gov
Sent: Friday, May 13, 2011 2:32:06 PM
Subject: RE: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN	Ethernetcommunications? CryoCon RS-232? 




Jay, 



I looked at their documents. The serial port supports Modbus slave. I could not determine if the Ethernet does as well, but I suspect so. Then you do don’t need to write a driver at all, you just read and write PLC registers via Modbus to communicate with EPICS. 



Mark 








From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Jay Steele 
Sent: Friday, May 13, 2011 2:08 PM 
To: tech-talk@aps.anl.gov 
Subject: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernetcommunications? CryoCon RS-232? 




Hi EPICS folks, 


Has anybody developed a EPICS module to communicate with the OMRON PLC SYSMAC CJIM CPU12-ETN using Ethernet TCP/IP sockets? I'm prepared to develop such a module using the asyn framework, but wanted to check if anybody has done this already. We use the OMRON PLC for cryogenics and vacuum control for our bionanoprobe X-ray fluorescence instruments. I see references to Omron PLCs on the EPICS website from Paul Hamadyk and Mauro Giacchini, but only for RS-232 communications. 





Has anybody developed a EPICS module for RS-232 communications with CryoCon temperature controllers? Again I'm prepared to develop such a module using the asyn framework, but wanted to check if anybody has done this already. 





Thanks, 


Jay Steele 


Xradia Corporation 





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References:
RE: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernetcommunications? CryoCon RS-232? Mark Rivers

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