Ah30 - Rs485 Bus Connection - Assa Abloy Aperio AH20 Installation Instructions Manual

AH30 - RS485 Bus Connection

Examples of connection of multiple Communication Hubs
to a single RS-485 bus of an EAC system:
A
EAC system Termination
enabled
A
B
Hub 1
DIP 6 ON
DIP 7 ON
DIP 8 ON
EAC system Termination
enabled
Communication Hub Connections, examples
Note: The RS485 bus cable should be of type twisted pair. The
maximum cable length of 1000 meters should not be exceeded.
B
Hub 1
DIP 6 OFF
DIP 7 OFF
DIP 8 OFF
A
B
A
B
A
B
Hub 2
DIP 6 OFF
DIP 7 OFF
DIP 8 OFF
A
B
Hub 2
DIP 6 OFF
DIP 7 OFF
DIP 8 ON
A
B
Hub N
End of Bus
DIP 6 ON
DIP 7 ON
DIP 8 ON
11