Siemens SINUMERIK 828D Service Manual page 72

Service cases - hardware
4.1 PPU26x/PPU28x
The RJ45 socket is equipped with one green and one yellow LED. As a consequence, the
following information of the PLC I/O interface is displayed based on PROFINET:
Name
Link
Activity
LED status, rear
Figure 4-3
For diagnostic purposes, the RJ45 sockets, port 1 and port 2 are each equipped with a green
and a yellow LED. As a consequence, the following connection information of the PLC I/O
interface is displayed based on PROFINET:
Name
Link
Activity
72
Color State
Green ON
OFF
Yellow ON
OFF
Rear of the PPU
Color State
Green ON
OFF
Yellow ON
OFF
Meaning
100 MBit link available
Missing or faulty link
Sending or receiving
No activity
Meaning
100 MBit link available
Missing or faulty link
Sending or receiving
No activity
Service Manual, 03/2010, 6FC5397-5DP20-0BA0
Hardware and Software