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LONWORKS® BUS WIRING GUIDELINES
3 74-2865—04
Table 1. Daisy-chain FTT Network Bus Topology Transmission Specifications (Doubly Terminated).
NOTES:
— See Table 2 for singly terminated FTT network bus topology transmission specifications.
— See Tables 3 and 4 for a list of Honeywell provided FTT daisy-chain and free topology network wire/cables.
— See the generic cable manufacturer information that meets Echelon LonWorks Bus specifications in Table 5.
Table 2. FTT Network Free Topology Transmission Specifications (Singly Terminated).
Table 3. Honeywell Provided Daisy-Chain (Doubly Terminated) FTT Network Wire/Cables.
Table 4. Honeywell Provided Free Topology (Singly Terminated) FTT Network Wire/Cables.
NOTE: Honeywell Cable, www.honeywellcable.com, is the recommended manufacturer of network wire.
Wire/Cable Type (Unshielded)
Cable Parameters
Maximum FTT Network Bus
Length for Segment(s)C nF/km Vprop% of c AWG/Dia. RloopW/km
Honeywell Cable 1125 (stranded non-plenum) 79 67
16/1.5 mm
2
17.9 4600 feet (1400 m)
Belden 85102 (stranded non-plenum) 56 62
16/1.5 mm
2
28 8900 feet (2700 m)
Belden 8471 (stranded non-plenum) 72 55
Level IV Cable Specifications, 22AWG (solid/
stranded twisted pair)
49 67
22/.34 mm
2
106 4600 feet (1400 m)
TIA568A Category 5 24 AWG (twisted pair
solid or stranded, plenum or non-plenum)
46 58
24/.27 mm
2
168 3000 feet (900 m)
Wire/Cable type (Unshielded)
Maximum Length for Segment(s)
Node-to-Node FTT Network Bus
Honeywell Cable 1125 (stranded non-plenum) 1640 feet (500 m) 1640 feet (500 m)
Belden 85102 (stranded non-plenum) 1640 feet (500 m) 1640 feet (500 m)
Belden 8471 (stranded non-plenum) 1300 feet (400 m)
Level IV Cable Specifications, 22AWG (solid/stranded twisted pair)
TIA568A Category 5 24 AWG twisted pair (solid or stranded, plenum or
non-plenum)
820 feet (250 m) 1500 feet (450 m)
Wire/Cable Type (Stranded Unshielded) Maximum FTT Network Bus Length for Segment(s)
Honeywell Cable 3252 - plenum (one twisted pair) 4600 feet (1400 m)
Honeywell Cable 3253 - plenum (two twisted pair)
Honeywell Cable 1061 - non-plenum (one twisted pair)
Paige AK3797 - plenum (one twisted pair)
Paige AK3799 - plenum (two twisted pair)
Paige AK3798 - non-plenum (one twisted pair)
Wire/Cable Type (Stranded Unshielded)
Maximum Length for Segment(s)
FTT Network Bus Node-to-Node
Honeywell Cable 3252 - plenum (one twisted pair) 1640 feet (500 m) 1300 feet (400 m)
Honeywell Cable 3253 - plenum (two twisted pair)
Honeywell Cable 1061 - non-plenum (one twisted pair)
Paige AK3797 - plenum (one twisted pair)
Paige AK3799 - plenum (two twisted pair)
Paige AK3798 - non-plenum (one twisted pair)