Siemens SINUMERIK ONE NCU 1740 Equipment Manual page 74

Connecting
8.9 PROFIBUS DP
Pin
6
7
8
9
The P5EXT voltage is provided exclusively to supply the bus termination.
Signal type: VO = Voltage output (power supply); O = Output, B = Bidirectional
Position of the connector
The following figure shows the mounting position and the designation of the connector on the
module.
Figure 8-6
74
Signal name Signal type Meaning
P5EXT VO
P24_SERV VO
1XRS_DP B
- -
PROFIBUS DP interface
5 V power supply for bus termination, external, short-circuit
proof
24 V for teleservice, short-circuit proof, 150 mA maximum
RS-485 differential signal
Reserved, do not use
Equipment Manual, 10/2021, A5E51087503B AA
NCU 1740