EPICS Home EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

Format page
for printing


Search Tech-talk
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  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  2010  2011  2012  <2013>  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>
Subject: Re: LabView interface to EPICS
From: "Faucett, John A" <[email protected]>
To: tech-talk <[email protected]>
Date: Thu, 19 Sep 2013 22:45:20 +0000
Emmanuel Mayssat  wrote:

Let me see if I understand correctly.
You use a device like the cRIO ( http://www.ni.com/compactrio/ ) that include a FPGA.
That FPGA is running code (VHDL +) generated and downloaded through LabView.

LabVIEW can create the FPGA code but it does require a different technique than non-FPGA LabVIEW.

The FPGA is programmed for 2 functions: (1) interface with the hardware (2) run an embedded EPICS IOC.
Once the FPGA is programmed, you can interface with its process variable (PV)  to change (let's say) a digital output.

No, the cRIO runs VxWorks and EPICS in the non-FPGA processor.  For input the FPGA moves results from the cRIO modules to a place for run-time LabVIEW to fetch and make available via shared memory to the EPICS device support.

Now we're pretty much at the limit of what I know since I am not the implementor of this scheme.  You might try googling 'fpga labview epics'.


John Faucett
LANSCE
LANL

Correspondence


References:
LabView interface to EPICS Emmanuel Mayssat
Re: LabView interface to EPICS Faucett, John A
RE: LabView interface to EPICS Emmanuel Mayssat
Navigate by Date:
Prev: RE: LabView interface to EPICS Emmanuel Mayssat
Next: Re: LabView interface to EPICS Scott Baily
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <2013>  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: LabView interface to EPICS Emmanuel Mayssat
Next: Re: LabView interface to EPICS Scott Baily
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <2013>  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 20 Apr 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·