[etherlab-dev] r1713 - Distributed Clocks IOCTL functions

Florian Pose fp at igh-essen.com
Mon Apr 27 12:58:01 CEST 2009

On Mon, Apr 27, 2009 at 12:33:52PM +0200, Erwin Burgstaller wrote:
> * Mon, Apr 27, 2009 - 12:06:01 +0200, Florian Pose - fp at igh-essen.com:
> > mhmm, could you please try the following commands?
> > 
> > ethercat reg_read -p0 -tuint64 0x0910
> > ethercat reg_read -p0 -tuint64 0x0918
> > ethercat reg_read -p0 -tuint64 0x0920
> > 
> > Does any of them fail?

Ok, then this slave does only support the delay measurement and can not
be used as a reference clock.

The only thing a master can do is to try if the system time offset
register is readable. If not, it has to mark the slave as type 2,
supporting only propagation delay measurement. I'll implement this.

BTW, what are the first 4 digits of the serial number printed on the
left side (2 dig. week, 2 dig. year)?

Best regards,
Florian Pose


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