Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 216

Parameter group communication
7798/7777 LON system number/subscriber number
Delivered condition
Setting range
7779 Fault manager
"Fault manager 7779"
Device is fault manager within a sys-
tem.
This parameter determines whether the
device should collect and display all sys-
tem fault messages. Furthermore, the
control unit monitors all subscribers for
failure and generates central fault mes-
sages.
Note
Only one device may be configured as
the fault manager within a system.
Exception: The Vitocom communication
interface may be an additional fault man-
ager.
779C Receive interval for data
"Receive heartbeat 779C"
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.
216
"Subscriber number"
1
1 to 99
Valu
e
"0"
"1"
Delivered condition
Setting
Delivered condition
Setting range
"System number"
1
1 to 5
Explanation
Device is not fault manager.
Device is fault manager.
0
0 / 1
20 min
0 to 60 min
(cont.)