CDVI ATRIUM A22K - RS485 BUS Topologies

34
cdvigroup.com
A22K
High Security Access Control 2-Door Module

The A22K has an RS485 LOCAL BUS terminal allowing the connection with an ATRIUM expander module. The
RS485 LOCAL BUS communication is up to 1220 m (4000 ft) maximum distance. One A22K can support up to
four A22K expansion modules. Refer to “Module type conguration (controller or expander)” on page 15 to
set an A22K as an expander.
Connect the expander modules using these topologies:
cdvigroup.com
cdvigroup.com cdvigroup.com cdvigroup.com
cdvigroup.com
A22K
A22K A22K A22K A22K
cdvigroup.com
cdvigroup.com
cdvigroup.com
cdvigroup.com
cdvigroup.com
A22K
A22K
A22K
A22K
A22K
cdvigroup.com
cdvigroup.com
cdvigroup.com
cdvigroup.com
cdvigroup.com
A22K
A22K A22K A22K A22K
cdvigroup.com
cdvigroup.com
cdvigroup.com
cdvigroup.com
cdvigroup.com
A22K
A22K
A22K
A22K
A22K
DAISY CHAIN
BUS

DAISY CHAIN/BUS/STAR
STAR