Siemens IM 155-6 PN ST - Page 30

Interrupts, diagnostics, error, and system messages
5.1 Status and error displays
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
30 Manual, 04/2017, A5E03576904-AE
PWR LED on the interface module
Table 5- 2 PWR status display on the interface module
PWR LED
Meaning
Remedy
Off
Supply voltage not present or too small Check the supply voltage.
On
Supply voltage present -
LK1/LK2 LED on the BusAdapter
Table 5- 3 LK1/LK2status display on the BusAdapter
LEDs LK1/LK2
Meaning
Remedy
Off
There is no Ethernet connection between the
PROFINET IO interface of your PROFINET device
and a communication partner (e.g. IO controller).
Check whether the bus cable to the switch/IO con-
troller is interrupted.
On
There is an Ethernet connection between the
PROFINET IO interface of your PROFINET device
and a communication partner (e.g. IO controller).
-
Flashes
The "Node flash test" is run (the RN/ER/MT LEDs
also flash).
-
LED display of configuration errors
Configuration errors of the ET 200SP distributed I/O system are output on the
interfacemodule by the ERROR (red) and MAINT (yellow) LEDs.
The following configuration errors are indicated by the LEDs:
● More than one I/O module pulled
● Missing server module
● Interruptions or short circuit on the backplane bus