Pin Signal name Signal type Meaning
7 P24_SERV VO 24 V for teleservice, short-circuit proof, 150mA maximum
8 1XRS_DP B RS-485 dierential 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 dierential 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 dierential 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
Position of connectors
The following gure shows the mounting position and the designation of the connector on the
module.
Figure 7-9 PROFIBUS DP/MPI interfaces
Connecting
7.9 PROFIBUS DP
NCU 7x0.3B PN
Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1 67
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