Electrical installation
Communication
4
l
68
EDKLCMZ3024−SPS DE/EN 4.0
Number of bus stations
M
123
SS S S S
RR
2133PFB004
Segment Master (M) Slave (S) Repeater (R)
1 1
2
31
30
−
−
2 − 30 1
3 − 30 1
I Tip!
Repeaters do not have a station address but in the calculation of the number
of stations they reduce the number of stations by 1 on each side of the
segment.
Repeaters can be used to build up line and tree topologies. In this case, the
maximum total bus system expansion depends on
ƒ the baud rate used
ƒ the number of repeaters used
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