Siemens ET 200SP HA, Equipment Manual

Page: 32 / 48

Description
The LK LED indicates the following status:
LED Meaning Remedy
LK1/LK2
Off
There is no Ethernet connection between the PROFINET IO inter‐
face of your PROFINET device and a communication partner (e.g. IO
controller). Check whether the bus cable to the
switch/IO controller is interrupted.
On
There is an Ethernet connection between the PROFINET IO inter‐
face of your PROFINET device and a communication partner (e.g. IO
controller). ---
Flashes
The "Node flash test" is run (the RN/ER/MTLEDs also flash). ---
7.3 Useful information on error indicators
The LED error display provides information on the cause of the error.
The LED error display
• takes precedence over all other states that are displayed by the ERROR and MAINT LEDs.
• remains switched on until the cause of the error is eliminated
Error type and error location display (Page 32)
Example for error display (Page 33)
Displaying unsupported bus adapters
The LEDs RN (flashing), ER (flashing) and MAINT (off) on the interface module indicate that an
unsupported bus adapter is connected.
7.4 Error display
7.4.1 Error type and error location display
Definition
After notification by the flash signal, the error type is displayed followed by the error location/
error code.
Displays and interrupts
7.4 Error display
IM 155-6 PN HA
32
Equipment Manual, 09/2021, A5E39262148-AE