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<== Date ==> <== Thread ==>

Subject: Re: EPICS and CANbus?
From: Andrew Johnson <[email protected]>
To: <[email protected]>
Date: Tue, 3 May 2016 14:54:43 -0500
Hi Austin,

On 05/03/2016 02:30 PM, Grelle, Austin L. wrote:
> I'm interested in interfacing EPICS on Win7 with CAN bus components that
> are connected to an IP module at a remote facility. 

By "IP module" do you mean an Industry-Pack module, or some device that
connects between a CANbus and regular network port? I suspect you're
using the latter, but my Tip810 driver that you found can only talk to
this specific Industry-Pack module:
  http://www.tews.com/Products/ArticleGroup/TIP/TIP810.html
If you *are* using Industry-Pack, what kind of carrier board do you have
the module installed on?

I'll be happy to write more after you've confirmed the above.

- Andrew


> On my last visit to this facility, I set up a test stand that had my
> Win7 laptop connected to a switch, with a single IP module also
> connected. This IP module had a digital input module, digital output
> module, and analog output module connected in series to it. The digital
> input module had a rotary switch attached to one channel, the digital
> output module had two lights (red and green) in different channels, and
> the analog output had an analog display in one channel. Using some
> proprietary software from perhaps 20 years ago (was running on a WinXP
> machine, copied to my Win7 laptop without problems) I was able to view
> the digital input and control both the outputs. I captured the TCP
> packets ("ETHCAN") sent from this software used for sending and
> receiving these signals.
> 
> On my Win7 laptop, I attempted to compile and use the IPAC/Tip810 driver
> found at https://svn.aps.anl.gov/trac/epics/ipac to communicate with the
> components. I know it was designed for VxWorks, but I successfully
> compiled on Win7 and the IOC elements seemed to load fine, except I kept
> getting a "bad CAN address" message on the initialization phase.
> 
> Given this information, does anyone have any suggestions on implementing
> this or another driver that would work with "CANbus" DTYP IOCs on a Win7
> machine? 
> 
> 
> Thanks in advance,
> Austin Grelle

-- 
Arguing for surveillance because you have nothing to hide is no
different than making the claim, "I don't care about freedom of
speech because I have nothing to say." -- Edward Snowdon

References:
EPICS and CANbus? Grelle, Austin L.

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