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Subject: RE: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernetcommunications? CryoCon RS-232?
From: "Mark Rivers" <rivers@cars.uchicago.edu>
To: "Jay Steele" <jsteele@xradia.com>, <tech-talk@aps.anl.gov>
Date: Fri, 13 May 2011 14:32:06 -0500

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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Replies:
Re: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernetcommunications? CryoCon RS-232? Richard Farnsworth
References:
EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernet communications? CryoCon RS-232? Jay Steele

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