Experimental Physics and
Industrial Control System

Torsten Bögershausen <[email protected]> · Fri, 16 Mar 2018 08:28:35 +0100

Thanks everybody for the fast answers-

I think I was looking for "2slit_soft.vdb, which uses soft motor records,

instead of ao records, for center and width."

The good news: I got it working!
There is one question about the collision avoidance:
If the Gap is 0 and the slit is closed, and I move the center
there seems to be the risk for a collision, or better said,
that one blade is slightly started earlier and "pusshing" the other
one. I am not sure if this is a real-life problem.

The other thing is that I need to check the calculation of the
soft limits for the virtual motors.
The most obvious is that the rule "Gap > 0" is not there.
(And the other calculations need to be checked)
I'll set up a system with a simulator.

And of course, we are setting up a system as well,
where the synchronization is done in the motor controller.

On 08/03/18 18:20, Mooney, Tim M. wrote:

There is also, in the optics module, 2slit_soft.vdb, which uses soft motor

records, instead of ao records, for center and width.

Tim Mooney ([email protected]) (630)252-5417
Beamline Controls Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab

-------------------------------------------------------------------------------

*From:* [email protected] <[email protected]> on behalf

of Goetze, Kurt A. <[email protected]>

*Sent:* Thursday, March 8, 2018 10:51:13 AM
*To:* Torsten Bögershausen; [email protected]
*Subject:* RE: Controling a slit system with 2 hard and 4 soft motorrs
Hi Torsten,

The synApps optics module has support for this type of thing:

https://github.com/epics-modules/optics/blob/master/opticsApp/Db/2slit.db

Kurt

-----Original Message-----

From: [email protected] [mailto:[email protected]] On

Behalf Of Torsten Bögershausen

Sent: Thursday, March 08, 2018 10:40 AM
To: [email protected]
Subject: Controling a slit system with 2 hard and 4 soft motorrs

Hej motorists,

I recently learned about the transform record, which can be used to control a

slit with 2 physical axes in the way that you can set the values for GAP and

CENTER and the position of the physical blades are calculated. (Or vice versa)

Does anybody have a super-duper-luxus template file which uses 4 soft motors

together with some calc and transform records ?

Thanks in advance
/Torsten

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System