Allen-Bradley ControlNet 1786-6.2.1 Planning And Installation Manual page 18

maximum allowable segment length =
1000m (3280ft) - 16.3m (53.4ft) X [number of taps - 2]
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1000 (3280)
750 (2460)
500 (1640)
250 (820)
Example
If your segment requires 10 taps, the maximum segment length is:
1000m (3280ft) - 16.3m (53.5ft) x [10 - 2]
1000m (3280ft) - 130.4m (427.7ft))
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Planning A ControlNet Cable System
32 48
16
2
number of taps
= 869.6m (2852.3ft)
Publication 1786-6.2.1 - April 1988
2-5
30014-m