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5 Installation

5.2 Electrical installation

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

123

SS S S S

Segment Master (M) Slave (S) Repeater (R)

1131-

230-

2-301

3-301

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 124 125

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