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