3 use of repeaters, Use of repeaters, 5technical data – Lenze CANopen Controller-based Automation User Manual
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5
Technical data
5.4
Bus cable length
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Lenze · Controller-based Automation · CANopen® Communication Manual · DMS 6.3 EN · 04/2014 · TD17
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5.4.3
Use of repeaters
Compare the values from the tables
.
If the detected segment cable length is smaller than the total cable length to be achieved, repeaters
must be used.
Example: Detecting cable lengths / number of repeaters
At the maximum number of nodes (127), the following cable lengths/number of repeaters from the
specifications have to be observed:
Given:
Cable cross-section
0.5 mm
2
, according to
Bus cable specification ( 21)
Number of nodes
127
Repeater
Lenze repeater, type 2176 (cable reduction: 30 m)
Baud rate [kbps]
10
20
50
125
250
500
800
1000
Max. cable length [m]
8000
3900
1500
630
290
110
40
17
Segment cable length [m]
270
270
270
270
270
110
40
17
Number of repeaters
33
16
6
2
1
-
-
-