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L
W
® BUS WIRING GUIDELINES
ON
ORKS
Table 5. Echelon Generic Cable Specification For Belden 85102 Equivalent, Stranded Twisted Pair 16 AWG (1.5 mm
DC Resistance, each conductor
DC Resistance Unbalance
Mutual Capacitance
Characteristic Impedance
Attenuation
20 khz
64 khz
78 khz
156 khz
256 khz
512 khz
772 khz
1000 khz
Propagation Delay
Cable Termination
The FTT network segment requires termination for proper
data transmission performance. Use a 209541B FTT
termination module. Free topology (singly terminated)
segments use the yellow and brown wires. Daisy-chain
(doubly terminated) segments use the orange and brown
wires. See Fig. 4.
Fig. 4. 209541B FTT termination module.
Free Topology (Single Termination)
Network Segment
In a free topology segment (singly terminated) only one
termination is required and the termination can be placed
anywhere on the free topology segment. See Fig. 1 and 5.
BROWN
YELLOW
Fig. 5. Physical connection of module
for a single termination network.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell GmbH
Böblinger Straße 17
D-71101 Schönaich
customer.honeywell.com
® U.S. Registered Trademark
© 2008 Honeywell International Inc.
74-2865—04
K.K. Rev. 11-08
Minimum
Typical
14.0
14.7
92
100
YELLOW
ORANGE
BROWN
M12198
L
-BUS
ONWORKS
ORANGE
M12200
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
Maximum
Units
15.5
Ohms/km
20°C per ASTM D 4566
20°C per ASTM D 4566
per ASTM D 4566
108
Ohms
64 khz to 1 Mhz, per ASTM D 4566
1.3
Db/km
20°C per ASTM D 4566
1.9
2.2
3.0
4.8
8.1
11.3
13.7
5.6
Nsec/m
78 khz
Daisy-Chain (Double Termination)
Network Segment
In a daisy-chain free topology segment (doubly terminated)
two terminations are required, one at each end of the FTT
daisy-chained network segment. See Fig. 6 and 7.
DEVICE
(DAISY CHAINED)
TERMINATION
MODULE
DEVICE
Fig. 6. FTT termination module wiring for
double termination network topology.
L
ONWORKS
BROWN
ORANGE
YELLOW
Fig. 7. Physical connection of modules
for a double termination network.
L
W
®, Neuron®, L
ON
ORKS
registered trademarks of Echelon® Corporation.
Condition
DEVICE
(DAISY CHAINED)
TERMINATION
MODULE
DEVICE
DEVICE
M12199
-BUS
L
-BUS
ONWORKS
BROWN
ORANGE
M12201
YELLOW
M
® and L
M
® logo are
ON
ARK
ON
ARK
2
).
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