Experimental Physics and
Industrial Control System

Paul Hamadyk <[email protected]> · Mon, 16 May 2011 08:09:11 +0100

> ----- Reply message -----
> From: "Jay Steele" <[email protected]>
> Date: Fri, May 13, 2011 20:15
> Subject: EPICS support for OMRON PLC SYSMAC CJIM CPU12-ETN Ethernet communications? CryoCon RS-232?
> To: "[email protected]" <[email protected]>
> 
> 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

Jay,

Yes we have a asyn driver that supports OMRON's FINS (Factory
Intelligent Network Service) protocol but only for UDP. I found that TCP
was a bit slow but if you really want TCP then the OMRON document W421
"Ethernet Units - Construction of Applications" has some example code.

My driver doesn't support all the FINS commands but does 16-bit and
32-bit read & writes to data and auxiliary memory, core I/O and access
to some status information. Tell me what you need and I'll see if it
will work.

Paul.

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System