Cable termination, Singly terminated network segment – Honeywell Q7300H User Manual
Page 14
T7300F/Q7300H SERIES 2000 COMMERCIAL THERMOSTATS AND COMMUNICATING SUBBASES
63-4365
14
M16085B
EXCEL 10
RI0
EXCEL 10
RI0
EXCEL 10
RI0
EXCEL 10
CVAHU
T7770
T7770
T7770
T7770
T7770
JACK FOR
OPERATOR
TERMINAL
209541B TERMINATION
MODULES (AT ENDS OF
LonWorks® BUS
DAISY-CHAIN)
T7770
WITH NO
LonWorks®
BUS ACCESS
T7770
WITH NO
LonWorks®
BUS ACCESS
LonWorks® BUS
I/O CONNECTIONS
EXCEL 10
RI0
EXCEL 10
RI0
EXCEL 10
CVAHU
EXCEL 10
RI0
EXCEL 10
RI0
EXCEL 10
CVAHU
1
4
8
12
16
17
23
30
31
37
44
EXCEL 15
W7760
BUILDING MANAGER
T7300
T7300
T7300
T7300
T7300
T7300
T7300
T7300
LonWorks® BUS
LonWorks®
BUS
LonWorks
®
BUS
Fig. 8. Wiring layout for one doubly terminated daisy-chain LonWorks
segment.
Cable Termination
The FTT network segment requires termination for proper
data transmission performance. Use a 209541B
Termination Module to connect two of the three termination
module wires to the LonWorks
Bus terminals.
Singly Terminated Network Segment
In a singly terminated topology segment, only one
termination is required and can be placed anywhere on the
segment. Singly terminated segments use the yellow and
brown wires. Mount the termination modules on the
appropriate terminals as shown in Fig. 9.
C1 C2 C3 C4 C5
EB EB
X
T
T AS
AS
ORANGE
BROWN
YELLOW
PART NO. 209541B
TERMINATION MODULE
M16202
Fig. 9. Singly terminated LonWorks
Bus termination
module.