Westermo MRD-310 - Manual (Page 12)

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LED indicators
LED Status Description
Power
PWR
OFF
ON (green) No power
Unit ready
Network indicator
NET
OFF
Flashing (green)
ON (green) Not ready
Searching for network
Locked to network
Signal strength
SIG
Flashing (green)
Flashing (green) then red
Flashing (red)
ON (red) Indication of received signal strength
Network connection fault
SIM card not present or faulty
RF circuitry initialising or network registration fault
Status
STS
ON (red)
Flashing (red)
ON (green)
Boot-up behaviour Normal operation
No Fault
No Fault
N/A Fault
Fault
No Fault
Power Indicator
The power indicator will light green when power is applied. If the indicator does not light
when power is applied then check the power supply connections.
Network Indicator
The network indicator reports the status of the connection to the network. When pow-
ered up the indicator will be off, the indicator will then flash green whilst the unit search-
es for a network, once connected to the network the indicator will light green.
Status Indicator
The status indicator reports the health of the unit. In normal operation the indicator will
be green, if a fault is detected either at boot-up or during normal operation the indicator
will light red. When the unit is first switched on or is reset the indicator will first light
red, then flash red in sequence with the Signal Strength Indicator, this is normal behaviour
during boot-up and does not indicate a fault.