Displays And Mode Selector; Leds - Siemens SIMATIC NET S7-300 - PROFIBUS Equipment Manual

Displays and mode selector

3.1

LEDs

LED display of the operating status of the CP
The different combinations of the four LEDs on the front panel indicate the status of the CP:
SF (red) BUSF (red)
Table 3- 1 Legend - meaning of the symbols:
Symbol
State
CP 343-5
Equipment Manual, 05/2023, C79000-G8976-C160-04
RUN (green) STOP (yellow)
ON (steady light)
CP operating mode
Starting up (STOP->RUN)
Running (RUN)
Stopping (RUN->STOP)
Stopped (STOP)
Stopped (STOP) with error
Running (RUN) with problems on PROFIBUS
Ready to begin loading firmware
(mode active for 10 seconds)
Loading firmware
Invalid firmware loaded
Waiting for firmware update (CP currently has an
incomplete firmware version)
Module fault / system error
OFF
3
Flashing
15