Lon System Number; C Interval For Data Transfer Via Lon; Ff Time Via Lon - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group communication

7798 LON system number !

Range of numbers in LON addresses.
The addresses of LON subscribers con-
sist of three different parts, as in a tele-
phone network (country code, area
code, subscriber number).
The first part is permanently set to the
same value for all Viessmann applian-
ces. The other parts comprise system
and subscriber number. This enables
subscribers to be grouped according to
system number, for example to separate
the external heat source in the LON as
well.

779C Interval for data transfer via LON !

Receive interval for the values and mes-
sages transmitted via LON.
If no signal is received for a size or mes-
sage within this cycle time, the control
unit sets this value or status to an internal
preset until the corresponding value is
received again.

77FF Time via LON !

This parameter determines the source
from which the control unit receives the
time and whether it is to be transmitted
via LON to other subscribers.
Note
Only one subscriber within a system may
transmit the time.
146
Delivered condi-
tion
1
Delivered condi-
tion
20 min
Valu Explanation
e
"0" Device receives time from the
control unit's internal clock
"1" Device receives time from
another LON subscriber within
the same system.
"2" Device transmits the time from
the internal clock of the control
unit. All LON subscribers within
the same system can receive the
time signal.
Setting range
1 to 5
Setting range
0 to 60 min