Westermo RM-455U-D - Manual (Page 47)

455U-D Radio Modem User Manual
Page 48 © May 2010
 Observe the DIO LEDs on the two modules. These LEDs should be flashing together.
Refer to the following table to diagnose the flashing LEDs (Firmware version 3.03 and
later)
Primary OK
LED
Primary DIO
LED
Secondary
OK LED
Secondary
DIO LED
System Status
Green
Flash
½ Sec Off,
1½ sec On
Flash
½ Sec Red,
1½ sec Green
Flash
½ Sec Off,
1½ sec On
Normal Operation. Primary is active. Secondary is
ready to take over
Flash
1 sec Red,
1 sec Green
Flash
1 sec On,
1 sec Off
Red
Flash
1 sec On,
1 sec Off
Secondary Fault. Primary is active. Secondary may be
able to take over if primary fails completely
Flash
1 sec Red,
1 sec Green
Flash
1 sec On,
1 sec Off
Fast Flash
0.4 sec Red,
0.1 sec green
Off
Secondary Low voltage shutdown. Primary is active.
Secondary cannot take over if Primary fails.
Flash
1 sec Red,
1 sec Green
Flash
1 sec On,
1 sec Off
Red Off
Secondary Module Failure. Primary is active.
Secondary cannot take over if Primary fails.
Flash
1 sec Red,
1 sec Green
Flash
1 sec On,
1 sec Off
Off Off Secondary No Power. Primary is active
Red
Flash
2 sec Off,
½ sec On Green
Flash
2 sec Off,
½ sec On
Primary Fault. Secondary is active. Primary may be
able to take over if Secondary fails completely.
Red
Flash
2 sec Off,
½ sec On
Flash
2 sec Red,
½ sec Green
Flash
2 sec Off,
½ sec On
Primary Fault and Secondary Fault. Secondary is
active. Primary may be able to take over if secondary
fails completely.
Fast Flash
0.4 sec Red,
0.1 sec green
Off Green
Flash
2 sec Off,
½ sec On
Primary Low voltage Shutdown. Secondary is active.
Primary cannot take over if Secondary fails.
Fast Flash
0.4 sec Red,
0.1 sec green
Off
Flash
2 sec Red,
1/2 sec Green
Flash
2 sec Off,
½ sec On
Primary Low Voltage Shutdown and Secondary Fault.
Secondary is active. Primary cannot take over
Red Off Green
Flash
2 sec Off,
½ sec On Primary Module Failure. Secondary is active
Red Off
Flash 2 sec
Red, ½ sec
Green
Flash
2 sec Off,
½ sec On
Primary Module Failure and Secondary Fault.
Secondary is active.
Off Off Green
Flash
2 sec Off,
½ sec On Primary No Power. Secondary is active
Off Off
Flash
2 sec Red,
½ sec Green
Flash
2 sec Off,
½ sec On
Primary No Power and Secondary Fault. Secondary is
active.
Other Incorrect Configuration or Wiring error