Siemens SINUMERIK 828D

Service cases - hardware
4.5 I/O modules
Hardware and Software
106 Service Manual, 03/2011, 6FC5397-5DP40-0BA0
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.
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Figure 4-17 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