Can you change the number used by the master to overflow the Cycle Number. The
number 4.151.347.200 is very close to 2^32 (which is the maximum Cycle Number)
and suits to all phasing/period defined by 4 bits (16 in decimal).
Regards
Klemen
On Friday, January 3, 2014 12:22 PM, Jan Kiszka <jan.kis...@web.de> wrote:
On 2013-12-12 21:13, Klemen Dovrtel wrote:
> Hello everybody,
>
> I am studding rtnet documentation and i am not sure of Rtnet slave <phasing>
> and <period> setup.
>
> How does the slave knows it is his turn to send data? I assume all the
> informations should be in the Synchronisation Frame -> Cycle Number field
> which is incremented by one in every new cycle, and it is reset to zero on
> overflow. What i am not sure is when does it overflow? I would suspect that
> the overflow number is set in a way that the (overflow_number+1) can be
> divided by all period numbers in the tdma.conf file without a reminder.
> Otherwise the slave slots can not be evenly distributed. I could not find any
> information about this.
>
Good point! This is not taken into account by the implementation. So if
the configuration contains non-power-of-two periods, it will face
skipped slots on wrap-around of the 32-bit cycle counter.
Jan
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