LED State Color LED = ON LED = OFF LED flashing
ERR Error indication Red An error occurred No errors or only
warnings
encountered (E4
errors).
The LED
behavior for the
error classes 2 to
4 is configurable.
Fast flashing (4
Hz) displays
together with the
RUN LED a cur-
rently running
firmware-upgrade
or writing data to
the Flash-
EPROM. Slow
flashing (1 Hz)
alone displays
shutdown of
Request To
Send. Medium
flashing (2 Hz)
alone displays at
start of PLC if
reboot after
watchdog.
MOD1 Mode 1 indication Yellow Processor
module is in
mode 1 state
Processor
module is not in
mode 1 state
-
RUN RUN/STOP state Green Processor
module is in state
RUN
Processor
module is in state
STOP
Fast flashing (4
Hz):
The processor
module is
reading/writing
data from/to the
memory card.
If the ERR-LED
is also flashing,
data is being
written to the
Flash-EPROM.
Processor modules > AC500-eCo
2022/01/31 3ADR010278, 3, en_US 21
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