
LED
Master module
Standby module
Continuous light
Flashes
Continuous light
Flashes
RL failure
Failure of redundancy
connection (both)
Failure of redundancy
connection (single)
Failure of redundancy
connection (both)
Failure of redundancy
connection (single)
COMM error
Error com plugin to
field devices;
Grouped with multiple
com plugins
Error com plugin to
field devices;
Grouped with multiple
com plugins
Meaning for non-redundant CPU modules
The following table shows the status LEDs and their meaning.
RTC = Runtime Container
LED
Continuous light
Power supply
Power supply OK
RUN
RTC running
STOP
RTC stopped
Master
RTC is master
Cycle / Engineering running
Standby
LED is off
AH failure
Plant network disconnected
RL failure
LED is off
COMM error
Error com plugin to field devices;
Grouped with multiple com plugins
8.2
Analyzing the communications modules
8.2.1
Power LED of the I/O modules
Definition
An communications module has a power LED to indicate the status of its power supply.
Description
The following table shows the possible states of the LED and their meaning.
LED status
Meaning
Off
Power supply error
Continuous light
Power supply OK
Operation
8.2 Analyzing the communications modules
CN 4100 Communication System
54
Equipment Manual, 10/2021, A5E50871363-AA
Содержание SIMATIC CN 4100
Страница 6: ...Table of contents CN 4100 Communication System 6 Equipment Manual 10 2021 A5E50871363 AA ...
Страница 8: ...Security information CN 4100 Communication System 8 Equipment Manual 10 2021 A5E50871363 AA ...
Страница 50: ...Commissioning 7 2 Phases CN 4100 Communication System 50 Equipment Manual 10 2021 A5E50871363 AA ...
Страница 56: ...Operation 8 3 LEDs of the RJ45 port CN 4100 Communication System 56 Equipment Manual 10 2021 A5E50871363 AA ...