RE: Would this motor record documentation be considered "current"

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

 

• Is there a good document explaining how to develop a model 3 device support for motors?

 

Not really.  This is a document I started many years ago and never finished.

https://github.com/epics-modules/motor/blob/master/docs/motorDeviceDriver.html

 

This is a presentation which gives an overview and motivation.

https://github.com/epics-modules/motor/blob/master/docs/presentations/MotorModel3_2012.ppt

 

There are many existing drivers you can look at as examples.  Look at drivers that derive from asynMotorController and asynMotorAxis classes.

 

Mark

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Paduan Donadio, Marcio via Tech-talk
Sent: Wednesday, April 30, 2025 1:26 PM
To: tech-talk at aps.anl.gov
Subject: Re: Would this motor record documentation be considered "current"

 

Hello!

 

Is there a good document explaining how to develop a model 3 device support for motors?

 

Thank you,

 

Márcio

---

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Torsten Bögershausen via Tech-talk <tech-talk at aps.anl.gov>
Sent: Wednesday, April 30, 2025 01:20
To: Graeme Winter <gw363 at cornell.edu>; Foster, Andrew (-,RAL,TEC) <Andrew.Foster at diamond.ac.uk>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: Would this motor record documentation be considered "current"

 

Now,

I would say that this document is not fully current.
- It seems to describe the model 1 driver
- It misses the model 3 driver "framework", which is what
   is used for all modern controllers.
- The Chapter 3.3 Backlash seems wrong.

I don't think that there is a difference between EPICS 3 and 7
regarding the EPICS motor module.


What information are you looking for ?

The "official" documentation is here:
<https://urldefense.us/v3/__https://github.com/epics-modules/motor/tree/master/docs__;!!G_uCfscf7eWS!bcxx9VUxVgj00rhv7GcRujSbI-VVEzfqzYfZbdlNlgPVpX63Dmc661WHUFNZwXo52oV7GMu64E0WgVPhsPQ$ >

And then I gave some introduction here:

<https://urldefense.us/v3/__https://github.com/EPICS-motor-wg/epics-mwg-discussions/blob/master/documents/2024-04-16-MotionTraining-at-PAL/3-MotorRec2024-v4.pptx__;!!G_uCfscf7eWS!bcxx9VUxVgj00rhv7GcRujSbI-VVEzfqzYfZbdlNlgPVpX63Dmc661WHUFNZwXo52oV7GMu64E0Wcco47Ts$ >

HTH
/Torsten


On 2025-04-29 18:16, Graeme Winter via Tech-talk wrote:
> Thanks Andy
>
> Yes, I had found that one also - however that one feels much more an
> index of definitions than a narrative on how to get started :-)
>
> I’ll try following them in parallel to see if I can get an idea of where
> things deviate… though maybe EPICS 3 and 7 deviate little in this area?
>
> All the best Graeme
>
>> On Apr 29, 2025, at 11:13 AM, Foster, Andrew (-,RAL,TEC)
>> <Andrew.Foster at diamond.ac.uk> wrote:
>>
>> Hi Graeme,
>> I’m not familiar with that document, I always look here:
>> https://urldefense.us/v3/__https://epics-modules.github.io/motor/motorRecord.html__;!!G_uCfscf7eWS!bcxx9VUxVgj00rhv7GcRujSbI-VVEzfqzYfZbdlNlgPVpX63Dmc661WHUFNZwXo52oV7GMu64E0WYs45UsU$  <https://
>> nam12.safelinks.protection.outlook.com/?url=""
>> modules.github.io%2Fmotor%2FmotorRecord.html&data=""> >> Cheers, Andy
>> *From:*Tech-talk <tech-talk-bounces at aps.anl.gov <mailto:tech-talk-
>> bounces at aps.anl.gov>>*On Behalf Of*Graeme Winter via Tech-talk
>> *Sent:*29 April 2025 16:40
>> *To:*tech-talk at aps.anl.gov <mailto:tech-talk at aps.anl.gov>
>> *Subject:*Would this motor record documentation be considered "current"
>> Good morning
>> Before I start committing too much of this to memory or putting it
>> into effect, would this be considered “current”?
>> <image001.png>
>> epics-motor <https://urldefense.us/v3/__https://nam12.safelinks.protection.outlook.com/?__;!!G_uCfscf7eWS!bcxx9VUxVgj00rhv7GcRujSbI-VVEzfqzYfZbdlNlgPVpX63Dmc661WHUFNZwXo52oV7GMu64E0W5fMXQaM$ 
>> url=""
>> motor.pdf&data=""> >> PDF Document · 178 KB <https://
>> nam12.safelinks.protection.outlook.com/?
>> url=""
>> motor.pdf&data=""> >>
>> I note it is from 2010, which may or may not be recent in EPICSland
>> Thanks and all the best Graeme
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>