Siemens SIMATIC ET 200SP IM 155-6 PN/2 HF, Руководство пользователя, Страница: 38 / 57

Interrupts, error messages, diagnostics and system alarms
5.1 Status and error displays
Interface module IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0)
Manual, 10/2018, A5E03915895-AH
37
PWR LED on the interface module
Table 5- 2 Status display of the PWR LED
PWR LED Meaning Solution
Off
Supply voltage not present or too small. Check the supply voltage.
On
Supply voltage present.
Observe the maintenance messages if the
MAIN LED is lit
-
LED display of configuration errors
Configuration errors of the ET 200SP distributed IO system are indicated on the interface
module via the red ERROR LED and the yellow MAINT LED.
The following configuration errors are signaled by the LEDs:
● No server module
● Interruptions or short-circuit on the backplane bus
Operating principle
The LED error display provides information on the cause of the error. After notification by the
flash signal, the error type is displayed followed by the error location/error code.
The LED error display:
● Is activated during POWER ON and during operation.
● Has priority over all other states that are displayed by means of the ERROR and MAINT
LED.
● Remains on until the cause of the error has been eliminated.
Table 5- 3 Display of error type and error location
Sequence Description
1 The ERROR and MAINT LEDs flash 3x
at 0.5 Hz
Indication of the error type
2 The MAINT LED flashes at 1 Hz Display of error type (decimal)
3 The ERROR and MAINT LEDs flash 3x
at 2 Hz
Signaling of error location/error code
4 The ERROR LED flashes at 1 Hz Display of tens digit (decimal) of the error location/error
code
5 The MAINT LED flashes at 1 Hz Display of ones digit (decimal) of the error loca-
tion/error code
6 Repetition of 1 to 5 until the cause of the error has been eliminated.