Diagnostics Via Leds - Siemens SIMATIC ET 200AL System Manual

Diagnostics and maintenance

4.2 Diagnostics via LEDs

4.2 Diagnostics via 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- 1 S7-1500, ET 200MP, ET 200SP, ET 200AL: LEDs for diagnostics on PROFINET
LED image Meaning
There is no Ethernet connection between
the PROFINET interface of the PROFINET
LED off
device and the communication partner.
No data is currently being sent/received via
the PROFINET interface.
There is an Ethernet connection between
the PROFINET interface of your PROFINET
LED green
device and a communication partner.
The "LED flashing test" is being performed.
LED flashes green
Data is currently being received from or sent
to a communications partner on Ethernet via
LED flickers yellow
the PROFINET interface of the PROFINET
device.
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.
82
S7-1500 ET 200MP
LINK/TX/RX LED
X X
X X
X X
X X
Function Manual, 05/2021, A5E03444486-AL
ET 200SP ET 200AL
LK LED P1 Link LED
P2 Link LED
X X
X X
X X
- -
PROFINET with STEP 7