[etherlab-users] Beckhoff Terminal EL3356 possibly has a timing issue?

Dr.-Ing. Wilhelm Hagemeister hm at igh.de
Thu Dec 22 15:13:05 CET 2016


Hello,

attached patch will circumvent the misbehaviour but slows down bus 
initialization....

Regards Wilhelm.

Am 21.12.2016 um 11:30 schrieb Dr. Ing. Olaf Marthiens:
> Hello,
>
> we have the same problem with the EL3356-0010. With the EtherCAT
> Configurator 2.11 all is ok.
>
> Have anyone a solution ?
>
> With kind regards,
>
> Olaf Marthiens.
>
>
> -----Urspr√ľngliche Nachricht-----
> Von: etherlab-users [mailto:etherlab-users-bounces at etherlab.org] Im Auftrag
> von Dr.-Ing. Wilhelm Hagemeister
> Gesendet: Dienstag, 8. November 2016 16:46
> An: etherlab-users at etherlab.org
> Betreff: [etherlab-users] Beckhoff Terminal EL3356 possibly has a timing
> issue?
>
> Hallo,
>
> we observe with the Ethercat terminal EL3356 a timing issue and would like
> to know if other users of the EtherLab EtherCat-Master experience this as
> well:
>
> The ethercat master writes the configuration SDO's before the transition
> from PREOP to SAFEOP. We observe that if the transition to SAFEOP happens to
> quick (<100ms) after writing the SDO's the process data from the terminal is
> "wrong" or the terminal does not switch to OP.
>
> It "feels" like the terminal is not ready with configuration after
> SDO-writing and the request to switch to SAFEOP comes to early.
>
> Has anybody else similar experiences (maybe also with other masters)?
>
> With kind regards
>
> Wilhelm Hagemeister.
>
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