LEDs at port 1 and port 2
There are 2 LEDs at port 1 and port 2 for diagnostics of the PLC I/O interfaces based on
PROFINET.
Figure 4-19 Port 1 and port 2
LED for communication at the RJ45 connector.
Name Color State Meaning
Link Green ON 100 MBit link available
OFF Missing or faulty link
Activity Yellow ON Sending or receiving
OFF No activity
4.6.2 This is how you remove the PP 72/48D PN
Overview
The activities necessary to replace the PP72/48D PN I/O module are described in the following.
If the PP 72/48D PN has a hardware defect, then this must be replaced by an identical module.
Preconditions:
● The I/O module is defective and must be replaced.
● The control cabinet is in a no-voltage condition, all of the connectors and cables are labeled.
Service cases - hardware
4.6 I/O modules
Software and hardware
Service Manual, 08/2018, 6FC5397-5DP40-6BA1 111
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