Siemens SINAMICS G150 Operating Instructions Manual page 347

The cable shield must be connected at both ends over large-surface area contacts.
Note
Connector type
Depending on the connector type, the correct assignment of the connector must be ensured
(IN/OUT) in conjunction with the terminating resistor.
Figure 6-34
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
Position of the bus terminating resistors
6.8 Communication via PROFIBUS DP
Operation
347