CODESYS - the IEC 61131-3 automation software

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 Post subject: Xenomai Codesys
PostPosted: Fri Oct 28, 2016 11:58 am 
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Joined: Fri Jun 05, 2015 8:17 am
Posts: 14
Dear Edwin,

Is it possible to leverage the rela time capabilities of Xenomai for codesys on a beagle bone?

BR,

Carsten


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 Post subject: Re: Xenomai Codesys
PostPosted: Fri Oct 28, 2016 8:02 pm 
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Joined: Mon Sep 05, 2005 9:42 am
Posts: 2015
Hi,
why not using rt_preemt patched kernel instead of using xenomai?
BR
Edwin


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 Post subject: Re: Xenomai Codesys
PostPosted: Fri Oct 28, 2016 8:46 pm 
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Joined: Fri Jun 05, 2015 8:17 am
Posts: 14
Hi Edwin,

Thanks for the suggestion. To my knowledge though Xenomai is more hard RT than rt_preempt, isn't it?
Could you therefor answer on my previous question if Xenomai can be used in user and or kernel mode?

BR,

Carsten


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 Post subject: Re: Xenomai Codesys
PostPosted: Sat Oct 29, 2016 7:00 am 
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Joined: Mon Sep 05, 2005 9:42 am
Posts: 2015
Hi,
yes it is right, but from my experiance there are not many applications out there which really
not could deal with rt_preemt patched kernel and really need Xenomai.
For this runtime release from store it is not possible to use with Xenomai.

BR
Edwin


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 Post subject: Re: Xenomai Codesys
PostPosted: Mon Oct 31, 2016 2:53 pm 
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Joined: Fri Jun 05, 2015 8:17 am
Posts: 14
Hi Edwin,

Thanks for your quick response. Will the runtime be suitable for use with Xenomai in future releases?

BR,

Carsten


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 Post subject: Re: Xenomai Codesys
PostPosted: Mon Oct 31, 2016 11:29 pm 
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Joined: Mon Sep 05, 2005 9:42 am
Posts: 2015
Hello,
At the moment not planned.
BR
Edwin


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 Post subject: Re: Xenomai Codesys
PostPosted: Mon Apr 03, 2017 7:51 pm 
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Joined: Fri Jun 05, 2015 8:17 am
Posts: 14
Hi Edwin,

Is it possible to create a xenomai 3 capable codesys in one of the future releases? With the current rt_preempt I get around 70-80 us jitter under load.
I am using the setup with a BBB industrial with a task cycle time of 1ms. The current jitter results in 'unpleasant' behaviour in our haptic setup.


BR,

Carsten Voort


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 Post subject: Re: Xenomai Codesys
PostPosted: Tue Apr 04, 2017 4:27 am 
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Site Admin

Joined: Mon Sep 05, 2005 9:42 am
Posts: 2015
Hi Carsten,
still not planned at the moment.

BR
Edwin


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