Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Fri, 9 Apr 2010 13:40:39 -0500

I just remembered that Tim Graber from ChemMatCARS here at the APS has
already done EPICS control for the Wavesurfer scopes.  As I understand
it, here is what he has done:

- The Wavesurfer scope runs Windows internally.  It has a Microsoft COM
interface to it's software.
- An EPICS IOC runs under Windows inside the scope.
- Other clients control the scope through that EPICS IOC.

Mark

-----Original Message-----
From: Mark Rivers 
Sent: Friday, April 09, 2010 1:12 PM
To: 'Davidsaver, Michael'; [email protected]
Subject: RE: asyn port question

Hi Michael,

You should be able to do what you propose fairly easily.  You may even
be able to do it with the asyn "Interpose Interface" mechanism, which
will just add the header.

However, that may or may not be the best way to do it.  I just looked at
the Lecroy manual, and I see that they do not seem to even document what
IP port number one uses when communicating with the scope?  What they do
document is their ActiveDSO interface, which uses ActiveX.  That is
another route you could use.  I have EPICS asyn drivers that use ActiveX
(Microsoft COM) for controlling Windows objects.  In my case it is the
Roper Scientific WinView program for CCD cameras.  

It's a choice: you can talk to the device with the lower-level commands
(if you can get enough documentation from them), or with the higher
level functionality of the ActiveDSO interface.

Mark

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Davidsaver, Michael
Sent: Friday, April 09, 2010 12:45 PM
To: [email protected]
Subject: asyn port question

All,

I am looking at a Lecroy wavesurfer scope which is capable of remote
control via. a tcp protocol.  The protocol is basically ascii text, but
is grouped into frames with an 8 byte header.  The header has some bits
for things like EOI and SRQ and a 32-bit size field.  Basically, this is
a simpler (primitive?) way to accomplish the same thing as VXI-11.

I haven't done more then read about asyn, but it seems like what I would
want to do is create an adapter which uses a tcp client port and
implements a gpib port.  What I don't know is: how complicated/difficult
would this be?

http://www.lecroy.com/tm/library/manuals/X-Stream_Scopes/RemoteControlMa
nual/WM-RCM-E_Rev_D.pdf

See chapter 3 "Control by LAN"

Thanks,
Michael Davidsaver
NSLSII Controls Group
Brookhaven National Lab

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System