Elpro Technologies 450U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 1.0.12-Beta7
www.cooperbussmann.com/wirelessresources
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CHAPTER 4 - DIAGNOSTICS
Diagnostics Chart
4.0
LED Indicator
Condition
Meaning
OK
GREEN
Normal Operation
OK
RED Solid
Factory Default Mode, Supply voltage low or Internal Module Fault
OK
RED At Power On
Boot Loader delay at start-up
OK
Fast Flash RED / GREEN
Module Boot Sequence
OK
Slow Flash RED / GREEN
Module Boot Sequence
Radio RX
GREEN flash
Radio receiving data
Radio RX
RED flash
Radio receiving data (-XXdB indicates a low signal strength)
TX/LINK
GREEN
Connection Established to remote device
TX/LINK
RED Flash
Radio Transmitting
RS-232
GREEN flash
Data sent from RS-232 Serial Port
RS-232
RED flash
Data received to RS-232 Serial Port
LAN
ON
Link Established on Ethernet port
LAN
Flash
Activity on Ethernet port.
RS-485
GREEN flash
Data sent from RS-485 Serial Port
RS-485
RED flash
Data received to RS-485 Serial Port
I/O
GREEN
Digital Input is turned on (shorted to GND).
I/O
RED
Digital Output is active
I/O
Off
Digital Output OFF and Input is open circuit.
I/O
GREEN varying intensity
Analog input current in circuit (Dim =4mA, bright=20mA)
The green OK LED on the front panel indicates correct operation of the unit. This LED turns red for a number of reasons,
i.e. module has been reset to Factory default and will remain on until the module has been configured and reset. Also if
the module has a processor fault or the supply voltage is low.
When the OK LED turns red shutdown state is indicated. On processor failure, or on failure during start-up diagnostics,
the unit shuts down, and remains in shutdown until the fault is rectified. During Module, boot-up the OK LED flashes RED-
GREEN until the boot sequence is complete.
Boot Status LED Indication during Start-up
The OK LED indicates the status of the module during the boot up process. At power on, the OK LED comes on RED.
During kernel boot the OK LED flashes Red-Green at a 1Hz rate (½ second red, ½ second green). During module
initialisation, the OK LED flashes Red-Green at 0.5Hz rate (1-second red, 1-second green). When initialisation is complete,
the OK LED switches to green continuously.
If the OK LED remains red at power on, this could indicate either low supply voltage (The module will not attempt to boot
until supply voltage is within range); Module fault; or module is in Factory Default mode.