[etherlab-users] problems with Beckhoff EL3702 terminal

Florian Pose fp at igh-essen.com
Mon Feb 11 20:19:45 CET 2008


On Mon, Feb 11, 2008 at 06:06:29PM +0100, Matthias Dagen wrote:
> I think I have to set the SYNC0 and the SYNC1 pulse. Depending on the 
> ratio them I can read xx samples/PDOs.

I guess you're right, although I can't find a reason, why the slave
should not work without DC, especially when oversampling is inactive...

> Is it possible to set the sync-pulse with the ethercat master or is 
> there a workaround?

You could try to allocate an ec_datagram_t and write the appropriate
register before ecrt_master_activate(). Is the specification available
to you?

> By the way, does the next release of the ethercat master support DC ;-) ?

Mhmm, yes, I think I will implement this in the near future. Those
oversampling devices are interesting for us, too. But I don't know, if
it will make it into the next release. My schedule is still overfull...
;-)

> But I think it is not too difficult to read the other values, if the 
> sync problem will be solved.

Definitely not.

-- 
Best regards,
Florian Pose

http://etherlab.org



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