Siemens SIMATIC ET 200SP Manual page 34

ACT LED on the interface module
Status display of the ACT LED
PWR LED on the interface module
Status display of the PWR LED
PWR LED Meaning
Missing or insufficient supply voltage at the interface module.
Off
Supply voltage L+ is available.
On
LK1/LK2 LEDs on the BusAdapter
Status display of the LK LED
LK1/LK2
LEDs
There is no Ethernet connection between the PROFINET IO
interface of your PROFINET device and a communication partner
Off
(e.g. IO controller).
There is an Ethernet connection between the PROFINET IO
interface of your PROFINET device and a communication partner
On
(e.g. IO controller).
The "Node flash test" is run (the RN/ER/MT LEDs also flash).
Flashes
Interface Module IM 155-6 PN R1 (6ES7155-6AU00-0HM0)
Equipment Manual, 11/2022, A5E51160307-AA
ACT LED Meaning
There is no active data exchange with the I/O modules via this interface module.
Off
Active data exchange with the I/O modules is taking place via this interface module.
The partner interface module is ready for operation and can take over the data
On
exchange in the event of a switchover.
Active data exchange with the I/O modules is taking place via this interface module.
The partner interface module is not operational and cannot take over the data
Flashes
exchange during a switchover.
Meaning
Interrupts, error messages, diagnostics and system alarms
Remedy
Check the supply voltage.
-
Check whether the bus cable to the
switch/IO controller is interrupted or
whether the port is disabled.
-
-
5.1 Status and error displays
Remedy
33