5installation – Lenze E94AYCPM User Manual
Page 24
5
Installation
5.2
Electrical installation
24
Lenze · E94AYCPM communication module (PROFIBUS®) · Communication Manual · DMS 12.0 EN · 11/2012 · TD17
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If the communication module is supplied externally, the bus terminator can be supplied
independently of the standard device supply.
Activating the bus terminating resistor
Number of stations
[5-5]
Number of stations
Tip!
Repeaters do not have a station address. When calculating the maximum 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. The maximum total bus system
expansion depends on ...
• the baud rate used;
• the number of repeaters used.
Note!
The bus terminator must always be supplied. Otherwise, the bus can get unstable.
2133PFB004
M
1
2
3
S
S
S
S
S
R
R
Segment
Master (M)
Slave (S)
Repeater (R)
1
1
31
-
2
30
-
2
-
30
1
3
-
30
1