Establishing The Can Bus Connection - Viessmann WAGO MB/TCP gateway Installation And Service Instructions For Contractors

Establishing the CAN bus connection

The Viessmann CAN bus is designed for "line" bus
■
topology with a terminator at both ends (accesso-
ries).
■ With CAN bus, the transmission quality and the
cable lengths depend on the electrical properties of
the cable:
Only use cable types listed in the following table.
–
Only use one cable type within a CAN bus.
–
Recommended cable type (on site):
CAN bus cable
Cable cross-section
■
Characteristic impedance
■
Max. length
■
Alternative cable types (on site):
CAN bus cable
Max. length
■
CAN bus cable
Max. length
■
In line with ISO 11898-2, twisted pair cable, shielded
0.34 to 0.6 mm 2
95 to 140
Ω
200 m
2-core, CAT5, shielded
50 m
2-core, CAT7, shielded
200 m
Installation sequence
17