EPICS Home

Experimental Physics and Industrial Control System


 
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: help setting up XY table control with EPICS StreamerClass
From: Christian Pauly <[email protected]>
To: EPICS Tech Talk <[email protected]>
Date: Fri, 21 Jun 2013 11:52:24 +0200
Ok, i see.

But still:
How can i get then information if the motors are running at the moment, or not. Without doing periodic scans on the PACT fields ??


On 06/21/2013 11:39 AM, Ralph Lange wrote:
Hi Christian,

On Fri Jun 21 2013 11:07:38 GMT+0200 (CEST), Christian Pauly
<[email protected]>  wrote:
No, only one motor can move at a time.
But i thought it is "bad style" to do this synchronous with such large
delays ? ( I had to define huge timeouts in the protocol to get it
work...)

This rule of not doing synchronous device support for devices with long
delays applies to writing device support.

If you are using StreamDevice (which I assume), your device support is
not synchronous - StreamDevice and ASYN support below are working
asynchronously and take care of the gory details for you.

The port that you are communicating with will be locked while a protocol
(like your move command) is running. But that is fine if the device can
only use one motor at a time.

Cheers,
~Ralph


--
Dr. Christian Pauly
Bergische Universität Wuppertal
Fachbereich C - Physik
Gaußstraße 20, D-42119 Wuppertal
Tel: +49 (0)202 439-2632,
Fax: +49 (0)202 439-2662



Replies:
Re: help setting up XY table control with EPICS StreamerClass Pearson, Matthew R.
Re: help setting up XY table control with EPICS StreamerClass Tim Mooney
References:
Re: help setting up XY table control with EPICS StreamerClass Christian Pauly
Re: help setting up XY table control with EPICS StreamerClass Ralph Lange

Navigate by Date:
Prev: Re: help setting up XY table control with EPICS StreamerClass Ralph Lange
Next: Re: help setting up XY table control with EPICS StreamerClass Pearson, Matthew R.
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: Re: help setting up XY table control with EPICS StreamerClass Ralph Lange
Next: Re: help setting up XY table control with EPICS StreamerClass Pearson, Matthew R.
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024