192
PlusBus subscriber:
0 EM-S1 extension (ADIO electronics module)
1 to 15 EM-M1, EM-MX, EM-P1 extensions
(ADIO electronics module)
17 to 31 EM-EA1 extension (DIO electronics module)
32 to 47 M2IO electronics module
64 SM1A extension (SDIO electronics module)
67 EM-HB1 extension (HIO electronics module)
CAN bus subscriber in the internal CAN bus sys-
tem:
1 Main control unit of the respective Viessmann
appliance
■
Vitocal: HPMU electronics module
■
Vitodens: HMU electronics module
■
Vitocharge: EMCU electronics module
■
Vitoair: VCU electronics module
45 Inverter
54 Refrigerant circuit controller (VCMU, ODUC)
58 Communication module (TCU 200/300/301)
59 HMI programming unit
66 SLP ADIO electronics module
67 EHCU electronics module
CAN bus subscriber in the external CAN bus sys-
tem:
1 Main control unit of the Viessmann appliance
that was commissioned first
Note
This main control unit is the main appliance
in both the internal and external CAN bus
system.
71 to 85 Other Viessmann devices in the system net-
work
90 Gateway (KNX, BACnet, Modbus)
97, 98 Energy meter
111, 112 Other energy meters
Low power radio subscriber:
49 to 63 Vitotrol 300-E, Vitotrol 100-EH
CAN bus cable
With CAN bus, the transmission quality and the cable
lengths depend on the electrical properties of the
cable.
Only use one cable type within a CAN bus.
Recommended CAN bus cable
Internal CAN bus External CAN bus
Accessories Bus communication cable
Length: 5, 15 or 30 m
Bus connecting cable
Length: 5, 15 or 30 m
For wiring on site In line with ISO 11898-2, shielded twisted pair cable:
■
Cable cross-section: 0.34 to 0.6 mm
2
■
Characteristic impedance: 95 to 140 Ω
Alternative cable types:
■
2-core, CAT7, shielded
■
2-core, CAT5, shielded
Shielding for CAN Ground (GND) Connect on both sides of the CAN
bus cable to the "GND" connection.
Do not connect anything here.
Max. cable length with on-site wiring 120 m 200 m
Terminator
The Viessmann CAN bus is designed for "line" bus
topology with a terminator at both ends.
Appendix
Overview of subscriber numbers
6218234
Appendix
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