Siemens 6ES7155-6AA01-0BN0 - Interrupts, diagnostics, error, and system messages; Status and error displays

IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
26 Equipment Manual, 10/2020, A5E03576904-AE
Interrupts, diagnostics, error, and system
messages
5
5.1 Status and error displays
LED display
The following diagram shows the LED display on the interface module and the BusAdapter.
①
RN (green)
②
ER (red)
③
MT (yellow)
④
PWR (green)
⑤
LK1 (green)
⑥
LK2 (green)
Figure 5-1 LED display on the interface module and BusAdapter
Meaning of the LEDs
The meaning of the status and error messages is described in the following tables.