Setting The Profibus Address - Siemens SINAMICS DCM Operating Instructions Manual

Bus terminating resistor
The bus terminating resistor must be switched on or off depending on its position in the bus,
otherwise the data will not be transmitted properly.
Principle: The terminating resistors must only be switched on at both ends of the bus line;
the resistors must be switched off at all other connectors.
The cable shield must be connected at both ends and over a large surface area.
Figure 10-2
10.2.2

Setting the PROFIBUS address

The PROFIBUS address must be set at parameter p0918.
The factory setting is
● for the lefthand CUD: 126
● for the righthand CUD: 125
The PROFIBUS address can be changed
● using the BOP20 (only possible on the lefthand CUD)
● using the AOP30 (if available)
● via PROFIBUS
The PROFIBUS address must be saved in a non-volatile fashion using the "Copy from RAM
to ROM" function. Each change made to the PROFIBUS address is only effective after
POWER ON.
SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619
Position of the bus terminating resistors
Descriptions of functions
10.2 PROFIBUS
311