Interrupts, Error Messages, Diagnostics And System Alarms; Status And Error Displays - Siemens SIMATIC ET 200SP Manual

Interrupts, error messages, diagnostics and system
alarms
5.1

Status and error displays

Introduction
Diagnostics by means of LEDs is an initial tool for error localization. In order to localize
errors still further, you usually evaluate the display of the module status in STEP 7 or the
diagnostics buffer of the CPU. The buffer contains plain text information on the error that has
occurred. For example, you will find the number of the relevant error OB in the plain text
information.
LED display
The following diagram shows the LED display on the interface module and the BusAdapter.
①
②
③
④
⑤
⑥
Figure 5-1
18
RN (green)
ER (red)
MT (yellow)
PWR (green)
LK1 (green)
LK2 (green)
LED display on the interface module
IM 155-6 PN BA interface module (6ES7155-6AR00-0AN0)
Manual, 03/2015, A5E34934425-AA
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