Chapter 7: Computer Link Function
The example shown below allows up to 2,500m between nodes. In order to extend communication distance, link cables are used (with repeaters at both ends). The maximum length of one link is 500 m. These cables are referred to as "link segments."
The link segments must not connect nodes directly. However, the areas surrounded by dotted lines, including repeaters at both ends, are treated as a single repeater. This does away with the limitation on the total number of repeaters between nodes in a system.
Segment A
Link segment 1
Link segment 3
Link segment 2
Segment B
:Area inside this rectangle is treated as one repeater
Segment D
Segment C
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Basic connections in a 10BASE5 system (maximum 2500 m using repeaters)
CAUTION
Each link segment must be 500 m or less. Do not connect a node to the link segment.
A link segment is treated as one repeater, even though it includes a repeater at each end (enclosed with dotted lines).
No more than two repeaters shall exist along the path between any two nodes. Only one segment in the network can be connected to more than two repeaters.