Siemens CP 343-1 - Manual (Page 14)

4 Displays
B3L−14
CP 343-1 Lean for Industrial Ethernet / Manual Part B3L
Release 03/2007
C79000-G8976-C198-04
4 Displays
The display on the front panel consists of 8 LEDs that indicate the operating mode
and the communication status.
Front panel: SF
BF
RX/TX
RUN
STOP
P1
P2
DC5V
The LEDs have the following meaning:
S SF: Group error
S BF: Bus fault PROFINET IO
S DCV5: DC 5 V power supply via the backplane bus (green = OK)
S RX/TX: Acyclic data exchange, for example Send/Receive
(not relevant for PROFINET IO data)
S RUN: RUN mode
S STOP: STOP mode
S P1 / P2: Link status of Ethernet port 1 / port 2