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.
\HOORZ
JUHHQ
Figure 4-22
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
4.6.5
This is how you remove the PP 72/48D 2/2A PN
Overview
The activities necessary when replacing the PP 72/48D 2/2A PN I/O module are described in
the following.
If the PP 72/48D 2/2A PN has a hardware defect, then it 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
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