Allen-Bradley ControlNet 1786-6.2.1 Planning And Installation Manual page 24

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In this link if each segment contains 500m (1640 ft) of cable:
•
segment 3 can contain up to 29 nodes, since it already contains 3 taps.
•
segments 1, 2, and 4 can contain up to 31 nodes each, since they already contain one
tap for a repeater.
•
segments 5, 6, and 7 can contain up to 30 nodes, since they already contain 2 taps for
repeaters.
•
the maximum number of nodes that can be connected to the link is 99 (not counting
repeaters)
repeater D
segment 1
segment 4
repeater A
Planning A ControlNet Cable System
segment 3
repeater E
segment 2
repeater B
segment 5
2-11
repeater F
segment 6
repeater C
segment 7
20133-m
Publication 1786-6.2.1 - April 1988