[etherlab-users] Split SDO and PDO data to seperate Ethernet frames?

[Jeroen Van den Keybus]

> We have the problem with that SDO data is
> appended to the Ethernet frame with the PDO data and this will then vary in
> length, depending on whether the SDO data is transmitted or not. Is there a
> way for their master the SDO data to send in a separate frame or this will
> always be appended?

I'm not sure about SDO data, but at least AL status query is also
periodically appended to EtherCAT frames containing process data. It's
one of the ways EtherCAT uses to keep the Ethernet frame rate
manageable. Perhaps you can use 2 domains in the same process ?

But honestly, I believe your slave should support these frames.

J.

> Thank you.
>
>
>
> Regards
>
>
>
> Werner Zeller
>
>
>
>
>
>
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