Profibus Connection On Communication Board; Connection Of The External 24 V Voltage Supply - Siemens Micromaster Profibus Instruction Manual

The PROFIBUS connection is on the bottom edge of the board housing.
Fig. 4-2
The communication board is normally supplied by the mains supply to the
converter.
The PROFIBUS communication board has its own separate 24 V supply
connection, thereby allowing the communication board and converter electronics to
operate independently of the converter mains supply (board is still capable of
communicating even when the converter power supply is switched off).
Terminal markings:
1 – +24 V
2 – 0 V
32
4
4 PROFIBUS interface
5 Local 24 V connection

PROFIBUS connection on communication board

1 2
5
PROFIBUS Optional Board
6SE6400-5AK00-0BP0
Operating instructions