Siemens SIMOTION C 230-2 Operating Instructions Manual page 121

Terminating resistor
A cable must be terminated with its own surge impedance to prevent line disturbances caused
by reflections. To this end, activate the terminating resistor at the first and last node of a subnet
or segment (see figure "Bus connector (6ES7...): Terminating resistor connected and
disconnected" in chapter Network components for a PROFIBUS subnet (Page 122)
Make sure that the nodes to which the terminating resistor is connected are always supplied with
voltage during power-up and operation.
Example
The following figure shows an example configuration of a subnet with SIMOTION C.
Figure 6-19
SIMOTION C
Operating Instructions, 11/2022, A5E33441428B
Networking example
Connecting
6.2 Networking
121