Gallagher T10 - HBUS Cabling Topology

Page 5
3E4288 Gallagher T10 Reader | Edion 11 | March 2023
Copyright © Gallagher Group Limited
HBUS cabling topology
The HBUS communicaons protocol is based on the RS485 standard and allows the reader to
communicate over a distance of up to 500 m (1640 ).
The cabling between HBUS devices should be done in a "daisy chain" topology, (i.e. A "T" or
"Star" topology should not be used between devices). Should "Star" or "Home-Run" wiring be
required, the HBUS 4H/8H Modules and the HBUS Door Module allow mulple HBUS devices to
be individually wired to the one physical locaon.
The end devices on the HBUS cable should be terminated using 120 ohms resistance. To
terminate the Gallagher Controller 6000, connect the supplied on-board terminaon jumpers
to the Controller. To terminate a reader, connect the orange (terminaon) wire to the green
(HBUS A) wire. Terminaon is already included at the HBUS Module, (i.e. each HBUS port is
permanently terminated at the module).
Connect the on-board
terminaon jumper
Controller 6000
RS485 1
HBUS
Device
"T" or "Star" circuits are
not permied between
HBUS devices
HBUS
Device
Terminate
HBUS
Device
HBUS
Device
HBUS
Device
HBUS
Device
HBUS
Device
HBUS
Device
Terminate
Remove the on-board
terminaon jumper
RS485 1
"T" or "Star" circuits are
not permied between
HBUS devices
HBUS
Device
Terminate
HBUS
Device
Controller 6000
Controller 6000
H1
H4
H8
H5
HBUS
Device
Terminate
HBUS
Device
Terminate
HBUS Module
HBUS
Device
HBUS
Device
Terminate
HBUS
Device
Terminate
HBUS
Device