Re: [etherlab-users] DC sync and arrival times of datagrams

2014-05-22 Thread Jeroen Proveniers
> > > > > So in summary: > > ecrt_master_sync_slave_clocks() is always required to sync the DC slave to > the master DC slave, then it is up to you whether you want to use option 1 > or 2 above. > > > > > > Hope this helps, > > Graeme. > > > > > > PS: I u

Re: [etherlab-users] DC sync and arrival times of datagrams

2014-05-21 Thread Jeroen Proveniers
Interestingly, the master thinks it sends 5000 datagrams per second, as the "ethercat master" command shows. I took timestamps using debug level 2, and the scheduling is correct, sometimes the delta between datagrams is 203us, but the next delta is 197 then. Average is a nice 200us. It turned out

[etherlab-users] DC sync and arrival times of datagrams

2014-05-17 Thread Jeroen Proveniers
Hi, A question to help me understand Ethercat a bit better, as I'm only a newbie to it; If I connect a scope to an ET1100 SYNC0 output (configured for a cycle time of 200us) and to an output from an MCU that indicates the Syncmanager has just received new cyclic data, should I expect the two p