Pin Signal name Signal type Meaning
8 - - Reserved, do not use
Signal type: B = bidirectional
Note
The PROFINET interface has what is known as autocrossing functionality, i.e. when required,
transmit and receive lines are switched over. Thus, no crossover cables are necessary.
LED displays
For diagnostic purposes, the RJ45 sockets are each equipped with a green and an orange LED.
This allows the following status information about the respective PROFINET port to be
displayed:
Table 7-14 PROFINET ports LED displays
Name Color Status Meaning
Link Green lit Transfer rate 100 Mbit/s
o No or faulty connection
Activity Orange lit Data exchange
o No data exchange
Position of the PROFINET interface
Connecting
7.8 PROFINET
NCU 7x0.3B PN
Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1 61