9. Operating system diagnostic messages
9.4 LED status messages on the device
9.4 LED status messages on the device
For diagnostic purposes, base devices without a display feature two LEDs, while
expansion devices feature and easy communication modules one LED. The light pat-
terns on these LEDs are accordingly used to indicate the corresponding device's
status.
LED POW/RUN base device
The POW/RUN LED indicates the state of the POW power supply as well as the STOP
or RUN state.
Off
Malfunction or no supply voltage
Green, continuous light
Supply voltage OK, RUN mode
Green,
Flashing, 1 Hz
Supply voltage OK, STOP mode
Green,
Flashing, 4 Hz
Fault at one of the expansions,
between the easyE4 device and the connector
LED ETHERNET/NET (base device only)
Off
No Ethernet cable connected; supply voltage off
The port is not enabled; the easyE4 device does not have an IP address
Yellow, continuous light
Ethernet cable connected
Green, continuous light
There is an IP address, but the NET has not been configured
Red, continuous light
Ethernet conflict or error, e.g.: duplicate IP address, address collision
Green, flashing,
2 flashes, pause, etc.
NET data flow working; one or more NET stations missing
Green, flashing,
1 flash, pause, etc.
NET data flow working; all NET stations working
LED POW/RUN status expansion unit
Off
Malfunction or no supply voltage
Green, continuous light
Supply voltage OK, address assigned, expansion bus working correctly
Green,
Flashing, 1 Hz
Supply voltage OK, no data exchange with base device
Green,
Flashing, 3 Hz
Supply voltage OK, no data exchange with base device,
diagnostic bit will be set, device not working
Green,
Flashing, 10 Hz
Device waiting for firmware update
Green,
Flashing, 0.5 Hz
Firmware update in progress
easyE402/24 MN050009ENEaton.com
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