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L L L L
W
W
W
W
ON
ON
ON
ON
ORKS
ORKS
ORKS
ORKS
• The L
W
ON
ORKS
• In a free topology configuration, the sum total of the sections must
not exceed 500m
• In a bus configuration, the sum total of the sections must not
exceed 2700m
• In a free topology configuration, activate the 50ohm terminator by
placing the appropriate jumper on the FTT10A plug-in of the CTU-
PLG06 board inside the TemaServer
• In a bus configuration, place two terminators (with resistance
values of 100ohm 1% ½W) at each end of the bus
• Check that the length of the L
to the norms indicated in Table 1.
Type of cable
AWG
mm2
12
14
16
18
20
22
0,35
24
Table 1: Length/capacity of L
• The FTT10A Echelon
indicated in Table 2.
Producer and model
Belden 85102
Belden 8471
Level IV (twisted pair,
typically solid and
unshielded)
JY (St) 2x2x0.8 (4-wire
helical twist, solid
shielded)
Table 2: Recommended L
1
L
W
®
is a trademark of Echelon Corporation
ON
ORKS
LONWORKS( Data Cables
Data Cables
Data Cables
Data Cables
Data Cables
1
data cable must be twisted pair
Ohm/Km
3,3
5,7
2
8,8
1,3
14
0,9
21
0,6
34
52
0,2
85
v1.2 User Guide recommends the cables
AWG
Connection to bus -
maximum total length [m]
16
16
22
20
W
ON
ORKS
Length [m] in relation to cable capacity
50nF/Km 100nF/Km 200nF/Km 500nF/Km
2676
1892
2153
1523
1707
1207
1394
986
1096
775
886
626
693
490
W
ON
ORKS
2700
2700
1400
900
W
ON
ORKS
data cable corresponds
1338
846
1077
681
854
540
697
441
548
346
443
280
346
219
data cables (m)
Connection in free topology –
maximum node-node length
max. [m]
500
400
400
320
cables
1uF/Km
598
482
382
312
245
198
155
Page 7
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