Assa Abloy Aperio AH30 - AH30 - RS485 Bus Connection

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Communication Hub Connections, examples
AH30 - RS485 Bus Connection
Here are examples of connection of multiple Communication Hubs to
a single RS485 bus of an EAC system. Termination should be enabled to
the last Hub on the bus.
EAC system
A
B
A
Termination
enabled
B
A
B
A
B
Hub 1
DIP 6 OFF
DIP 7 OFF
Hub 2
DIP 6 OFF
DIP 7 OFF
Hub N
End of Bus
DIP 6 ON
DIP 7 ON
EAC system
A
B
A
Termination
enabled
B
A
B
Hub 2
DIP 6 ON
DIP 7 ON
Hub 1
DIP 6 ON
DIP 7 ON
Note: The RS485 bus cable should be of type twisted pair. The
maximum cable length of 1000 meters should not be exceeded.