Experimental Physics and
Industrial Control System

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

Subject:	Re: Simulated limit switches on motorSim motor
From:	"Nariyoshi, Pedro via Tech-talk" <tech-talk at aps.anl.gov>
To:	Torsten Bögershausen <Torsten.Bogershausen at ess.eu>, Kevin Peterson <kmpeters at anl.gov>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Tue, 28 Nov 2023 16:22:34 +0000

Hi Torsten,

I do have the most current motorsim motor. The simulated individual arm "motors" are using the motorsim module (DTYP=asynMotor), but I have the gap and center "motors" (with DTYP=Soft Channel using RDBL/DINP/etc) that are used to control the individual motors via a network of calc records.

The longer story is that our goal is to eventually plug this IOC into a real pair of slit arms. The arms are designed in a way that does not prevent collisions, so we are using the gap/center controls to prevent damage to the slit arms. I originally had the center/gap controls as simple ao records, but it was desired that if the motors stopped (via STOP field or limit switch) that the set points update (copying the readback to the setpoint, similar to what the SYNC field does). I had tried to use auxilary records to sync these up, but I often ended with a infinite loop of write to set point -> motor tries to move -> limit switch is hit -> update set-point -> motor tries to move -> etc. This is why I decided to try to use virtual motors.

Pedro Nariyoshi

Software Controls Engineer

Facility for Rare Isotope Beams

Michigan State University

640 South Shaw Lane

East Lansing, MI 48824, USA

Tel. 517-908-7352

Email: nariyosh at frib.msu.edu

1633986722804

From: Torsten Bögershausen <Torsten.Bogershausen at ess.eu>
Sent: Tuesday, November 28, 2023 10:41:14 AM
To: Nariyoshi, Pedro; Kevin Peterson; tech-talk at aps.anl.gov
Subject: Re: Simulated limit switches on motorSim motor

[EXTERNAL] This email originated from outside of FRIB

Hej Pedro,

That depends. There may be an easy way to do what you want –

on the driver level.

Are you using a model 3 driver ?
/Torsten

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of "Nariyoshi, Pedro via Tech-talk" <tech-talk at aps.anl.gov>
Reply to: "Nariyoshi, Pedro" <nariyosh at frib.msu.edu>
Date: Tuesday, 28 November 2023 at 16:36
To: Kevin Peterson <kmpeters at anl.gov>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Subject: Re: Simulated limit switches on motorSim motor

Hi Kevin,

I figured I could try to remove the SPC_NOMOD from the dbd (and a bo/calcout record to write to it), but it feels too hackish. What I was really trying to figure out is if there was a field I could put a link in to set the limit switch fields (similar to RDBL/DINP/etc).

From: Kevin Peterson <kmpeters at anl.gov>
Sent: Tuesday, November 28, 2023 10:18:13 AM
To: Nariyoshi, Pedro; tech-talk at aps.anl.gov
Subject: Re: Simulated limit switches on motorSim motor

[EXTERNAL] This email originated from outside of FRIB
Pedro,

The HLS/LLS/RHLS/RLLS fields are read-only.

Kevin

On 11/21/23 12:24, Nariyoshi, Pedro via Tech-talk wrote:
> Hi,
>
>
> I am working on creating virtual motors to control some slits. One
> problem I have is that I couldn't find a way to set the
> HLS/LLS/RHLS/RLLS fields. Is there a way to control these (whether
> having an input link to these values or a writing them directly with a
> calcout or bo record)?
>
>
> Thank you very much
>
>
> *Pedro Nariyoshi*
>

>
>