Siemens SIMATIC ET 200AL - Diagnostics Using Status Leds

Diagnostics and maintenance
4.2 Diagnostics using status LEDs
PROFINET with STEP 7 V15
96 Function Manual, 12/2017, A5E03444486-AH
4.2
Diagnostics using status LEDs
LEDs for diagnostics on PROFINET
Each port of a PROFINET interface of a SIMATIC device has one LED.
The following table shows a summary of the meaning of these LEDs in the S7-1500,
ET 200MP, ET 200SP and ET 200AL systems.
Table 4- 3 S7-1500, ET 200MP, ET 200SP, ET 200AL: LEDs for diagnostics on PROFINET
LED image
Meaning
S7-1500
ET 200MP
ET 200SP
ET 200AL
LINK/TX/RX LED
LK LED
P1 Link LED
P2 Link LED
LED off
There is no Ethernet connection between
the PROFINET interface of the PROFINET
device and the communication partner.
No data is currently being sent/received via
the PROFINET interface.
X X X X
LED green
There is an Ethernet connection between
the PROFINET interface of your PROFINET
device and a communication partner.
X X X X
LED flashes
green
The "LED flashing test" is being performed. X X X X
LED flickers yel-
low
Data is currently being received from or sent
to a communications partner on Ethernet via
the PROFINET interface of the PROFINET
device.
X X - -
Additional information
You can find a detailed description of all LEDs of the module with cause of the error and
remedies in the relevant documentation for the module.