Operating instructions

114
Service menu:
1. Press OK + å simultaneously for
approx. 4 s.
2. "Coding level 1"
3. "Communication"
4. Select parameter.
7710 LON communication module
"LON module installed 7710"
If LON communication module is instal-
led in the control unit.
Valu
e
Explanation
"1" LON communication module is
installed and enabled.
"0" LON communication module is
not enabled.
Delivered condition 0
Setting 1 / 0
7798/7777 LON system number/subscriber number
"System number 7798"
"Subscriber number 7777"
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 appliances. 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.
Note
To avoid communication conflicts, every
subscriber number within a system may
only be assigned once. The Vitocom
communication interface always has
subscriber number 99.
Parameter group communication
Parameter group communication
5441 603 GB