FNL 17 / 31
4 Signals and fault indication
4.1 LEDs
The LEDs depicted above have the following meaning:
BF* bus failing, red, lighting whenever the PROFIBUS is not yet con-
figured or cannot be operated
Run* bus running, green, lighting while the PROFIBUS is in operation.
Rec receiving, green, lighting while the FNL is receiving data on the Eth-
ernet
TX transmitting, green, lighting while the FNL is sending data on the
Ethernet
LNK link active, yellow, lighting when there is a logical connection
between the FNL and the superior Ethernet partner
100 100 Mbit/s, red, lighting while the Ethernet communication is running
on 100 Mbit/s. At 10 Mbit/s the LED is off. The data rate adjusts
automatically and cannot be manually selected.
* for FNL with PROFIBUS-DP/12 MBit/s
Signals and fault indication
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