https://forge.codesys.com/forge/talk/Motion/thread/6bc4ccf861/2020-02-27T18:43:41.693000ZRecent posts to Lost Fieldbus synchronization in SoftMotion Task2020-02-27T18:43:41.693000Z2020-02-27T18:43:41.693000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.come7bf7e50471dd9c21fe5ff5e231c6b1f57834f39

<div class="markdown_content"><p>Hi,<br/> If this is Softmotion RTE unusual much....<br/> Which plc are you using?<br/> BR<br/> Edwin</p></div>

2020-02-27T18:43:40.533000Z2020-02-27T18:43:40.533000Zcookiyhttps://forge.codesys.com/u/cookiy/https://forge.codesys.com5f79b3644090ad469ae9482865bb9a52975ed824

<div class="markdown_content"><blockquote> <p><strong>Edwin Schwellinger hat geschrieben:</strong><br/> Hi,<br/> are you using SoftMotion RTE as plc with enabled distributed clocks on the SoftMotion Ethercat Master?<br/> This is mandatory to have for this.<br/> How is the jitter on the ethercat Task ( = Motion Task)? -&gt; check with the task monitor when you are online<br/> BR<br/> Edwin</p> </blockquote> <p>Thanks very much,I monitor the jitter in codesys but max jitter just 150+us.</p></div>

2020-02-27T18:43:37.338000Z2020-02-27T18:43:37.338000Zcookiyhttps://forge.codesys.com/u/cookiy/https://forge.codesys.com6bd0e44365377c652ee3c4f2c5bac8e1dd11a7d1

<div class="markdown_content"><blockquote> <p><strong>Edwin Schwellinger hat geschrieben:</strong><br/> Hi,<br/> verify the the task jitter on the EthercatMaster/Motion task.<br/> -&gt; reset by rightlick - then the last to rows - jitter<br/> BR<br/> Edwin</p> </blockquote> <p>Thanks very much!<br/> I have done the same thing and the jitter is larger than 150us, when it get longer, the value is getting large and the maximun will be 1300us.<br/> I also has a question than the controller has only one RJ45 and shared with ethernet and ethercat by a tplink, Do you think this will be a question? <br/> Thanks.</p></div>

2020-02-27T18:43:36.189000Z2020-02-27T18:43:36.189000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.coma066390515bb4790cc2b46296cc9159969989bfb

<div class="markdown_content"><p>Hi,</p> <blockquote> <p><strong>Zitat:</strong><br/> But my Customer say that he control the motor with another drivers successfully.</p> </blockquote> <p>verify the the task jitter on the EthercatMaster/Motion task.<br/> -&gt; reset by rightlick - then the last to rows - jitter</p> <p>BR<br/> Edwin</p> <p><img alt="IMG: Jitter.png" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4202"/></p></div>

2020-02-27T18:43:32.992000Z2020-02-27T18:43:32.992000Zcookiyhttps://forge.codesys.com/u/cookiy/https://forge.codesys.com8548642c852add8d8835fe6c2f3b6060cba57690

<div class="markdown_content"><blockquote> <p><strong>Edwin Schwellinger hat geschrieben:</strong><br/> Hi,<br/> On which system are you using it? Linux... is the kernel rt_preemt patched?<br/> If it is Windows and RTE you need to setup the bios options...<br/> Br <br/> Edwin</p> </blockquote> <p>Thanks for help!<br/> the hardware is most link BBB and come up with my Customer! Do you think this error has something to do with the hard real-time? But my Customer say that he control the motor with another drivers successfully.<br/> Thanks!</p></div>

2020-02-27T18:43:31.852000Z2020-02-27T18:43:31.852000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com8fb4f541adf623f571d6c9e443618d32f3eddfb8

<div class="markdown_content"><p>Hi,<br/> On which system are you using it? Linux... is the kernel rt_preemt patched?<br/> If it is Windows and RTE you need to setup the bios options...<br/> Br <br/> Edwin</p></div>

2020-02-27T18:43:28.588000Z2020-02-27T18:43:28.588000Zcookiyhttps://forge.codesys.com/u/cookiy/https://forge.codesys.com8481c18daf66ace0daabb5a4f4644929fe27cc62

<div class="markdown_content"><p>Dear sir:<br/> I have the same question with you. I also use a codesys with 2 hours and now when I set the sync to 4ms and offset 20%, it gets a error of fieldbus lost synchronicity when I try to control 5 real motor after about half ah hour. which is amzing is the drivers do not have any error about this,just error occured in codesys.<br/> I try to fiind the jitter of the ethercat task, about 1300+us, I think the jitter is too large so lead the error occuring,then I changed the offset with different values and find a best value is -20% with the jitter within 150us. And I think i get the real question about this error,but after about half an hour, i also got the same error and i find the jitter becomes more and more big.<br/> I really do not know the interal reason of the error "fieldbus lost synchronicity" and if it comes up with the task jitters.<br/> Do you got the answer of this ? <br/> Thanks for reading!</p></div>

2020-02-27T18:43:27.342000Z2020-02-27T18:43:27.342000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com2a4a58b61478a142e04a132b6ad584874f760125

<div class="markdown_content"><p>Hi,<br/> hm.. hard to say without checking it online on your devices.<br/> How could we proceed with this?<br/> CODESYS store - my question.<br/> BR<br/> Edwin</p></div>

2020-02-27T18:43:26.195000Z2020-02-27T18:43:26.195000Zvmphuchttps://forge.codesys.com/u/vmphuc/https://forge.codesys.comd15c6a458945998d9465b7da5e739a836cdf3f3a

<div class="markdown_content"><p>Hi,</p> <p>Now I don't know where this problem come from. I tested with single servo motor, and also 6 virtual servo motors. The result of this case is very good, actual position always track to set position which I set through SMC_FollowPosition. </p> <p>However, when I test with 6 pieces of real servo motors, actual position cannot track to set position. <br/> Could you recommend solution for this problem?</p> <p>BR,<br/> Mr. Phuc</p></div>

2020-02-27T18:43:22.911000Z2020-02-27T18:43:22.911000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.come12d7a35960693c91b33fde0c9959ee0d0cf93f1

<div class="markdown_content"><p>Hi,<br/> sure, should work for testing without problems.</p> <p>BR<br/> Edwin</p></div>