Lenze E94AYCPM - 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.
 External voltage supply ( 28)
 Activating the bus terminating resistor ( 25)
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