Siemens NCU 7 0.2 Series Manual page 66

Connecting
7.8 PROFIBUS / MPI
Pin assignment for X126, X136
Table 7- 17
Pin
1
2
3
4
5
6
7
8
9
The 1P5 voltage is provided exclusively to supply the bus terminal.
Signal type: VO = Voltage output (power supply) O = Output; B = Bidirectional
Position of connectors
The following figure shows the mounting position and designation of the connectors on the
Control Unit.
Figure 7-11
66
PROFIBUS DP interfaces (X126, X136)
Signal name Signal type
- -
G VO
2RS_DP B
2RTS_DP O
1G VO
1P5 VO
P24_SERV VO
2XRS_DP B
- -
PROFIBUS DP/MPI interfaces
Meaning
Reserved, do not use
Ground to P24_SERV
RS-485 differential signal
Request to send
Ground to 1P5
5 V power supply for bus terminal, external, short-circuit proof
24 V for teleservice, short-circuit proof, 150mA maximum
RS-485 differential signal
Reserved, do not use
Manual, 02/2011, 6FC5397-0AP20-0BA0
NCU 7x0.2