Keeping the World Flowing
13
Single and Dual Data Highway Configurations
4.2 Segmented Single Highway System
Powered
Active
Terminator
Repeater
Repeater
Segment 1
Segment 2
Segment 3
Bus Master
Fig. 6: Profibus Single Channel Data Highway Topology
The data highway may be connected as several segments
coupled by repeaters. The repeaters or actuator slaves will
require termination components if they are on the end of the
segment. Alternatively, separately powered active termination
devices can be used so that when the actuator is switched off
the bus performance is not affected.
Maximum number of devices participating in the exchange of data
127 (addresses from 0 to 126, 0 is usually the PLC)
Maximum number of devices per segment including repeaters
32
Maximum number of segments in series
EN50170 specifies a maximum of 4 repeaters
between any two devices. Some manufacturers of
repeaters allow more than this number.
A4 US
US
A4
US
A4
A4 US
To Next Page
Loading...
Need help?
General
