Siemens NCU 7x0.3 PN Series Manual page 62

Connecting
7.8 PROFIBUS DP
Pin assignment for X126, X136
Table 7- 18
Pin
1
2
3
4
5
6
7
8
9
The 1P5 voltage is provided exclusively to supply the bus termination.
Signal type: VO = Voltage output (power supply) O = Output; B = Bidirectional
Table 7- 19
Pin
1
2
3
4
5
6
7
8
9
The 1P5 voltage is provided exclusively to supply the bus termination.
Signal type: VO = Voltage output (power supply) O = Output; B = Bidirectional
62
PROFIBUS DP interface X126
Signal name Signal type
- -
M VO
1RS_DP B
1RTS_DP O
M5EXT VO
P5EXT VO
P24_SERV VO
1XRS_DP B
- -
PROFIBUS DP/MPI interface X136
Signal name Signal type
- -
M VO
2RS_DP B
2RTS_DP O
1M5EXT VO
1P5EXT VO
P24_SERV VO
2XRS_DP B
- -
Meaning
Reserved, do not use
Ground to P24_SERV
RS-485 differential signal
Request to send
Ground to P5EXT
5 V power supply for bus termination, external, short-circuit
proof
24 V for teleservice, short-circuit proof, 150mA maximum
RS-485 differential signal
Reserved, do not use
Meaning
Reserved, do not use
Ground to P24_SERV
RS-485 differential signal
Request to send
Ground to 1P5EXT
5 V power supply for bus termination, external, short-circuit
proof
24 V for teleservice, short-circuit proof, 150mA maximum
RS-485 differential signal
Reserved, do not use
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0