Re: Accessing EPICS PV from Allen-Bradley PLC

["Steven M. Hartman" <hartmansm@ornl.gov>]

> > For a small and short-lived test setup my A-B ControlLogix PLC needs 
> > to read some EPICS values from another system.  What are my options?
> > How about using an Ethernet/IP server library?  I.e. write a program 
> > that uses EZCA to poll the EPICS values periodically, then serve them 
> > to the PLC via Ethernet/IP...does this work?

For your "small and short-lived test setup", set up your own IOC 
with ao records, DOL the "real" PV from the real IOC, OMSL 
closed-loop, OUT to a tag on your PLC, with DTYP etherIP 
(http://ics-web.sns.ornl.gov/kasemir/etherip/index.html).

--
Steven Hartman
hartmansm@ornl.gov || 865-466-6473