10. easyE4 communication Connection to other devices
10.16 easy communication modules
10.16.2.2 LED status messages on EASY-COM-RTU-… communication module
LED POW/RUN EASY-COM-RTU-…
Shows the status of the POW supply voltage, as well as the RUN and STOP modes.
Off
Malfunction or no supply voltage
Red,
flashing, 5 Hz
Serious error; the UART interface between EASY-COM-RTU-… and the easyE4 base
device cannot be initialized,
i.e., no data transfers between EASY-COM-RTU-… and easyE4
Green, continuous
light
Operating mode RUN, normal operating mode:
l
No communication errors with the ComBUS
l
No missing slaves on the Modbus (in master mode)
Green,
Flashing, 1 Hz
STOP mode
l
The easyE4 base device is in the STOP state.
l
In master mode: One of the slave devices is not present / is not reporting in
Green,
Flashing, 3 Hz
Error in Modbus RTU communications: ComBUS error
1. CRC fault
2. Timeout error
Green,
Flashing, 10 Hz
Device waiting for firmware update
Green,
Flashing, 0.5 Hz
Firmware update in progress
Config LED onEASY-COM-RTU-…
Indicates whether the defined project configuration has been transferred
Off
There is no project configuration on the EASY-COM-RTU-…, i.e., a project was not
received from the easyE4 base device when turning on or the old project configuration
was deleted as a result of a user command.
Red,
continuous light
Invalid project configuration received from easyE4 base device
Green,
continuous light
There is a valid project configuration (master and slave modes), i.e., all project settings
are valid and accepted.
LED Modbus RTU on EASY-COM-RTU-…
Indicates whether the physical configuration of the Modbus RTU communication sys-
tem is working.
Yellow
Turns on for 50 ms when a new message is received or sent via Modbus.
As soon as the POW/RUN LED and the Config LED light up green, the EASY-COM-
RTU-… module is ready for communications via Modbus RTU.
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easyE402/24 MN050009ENEaton.com
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