—
9
—
NOTE
If you do not enable any of the NI MES-3980 switches to be the
Ring Master, the Turbo Ring protocol will automatically choose the
NI MES-3980 with the smallest MAC address range to be the Ring
Master. If you accidentally enable more than one NI MES-3980 to
be the Ring Master, the NI MES-3980 switches will auto-negotiate
to determine which one will be the Ring Master.
LED Indicators
The front panel of the NI MES-3980 contains several LED indicators. The
function of each LED is described in the following table.
LED Color
State
Description
On
Power is being supplied to power input
PWR1
PWR1
AMBER
Off
Power is not being supplied to power
input PWR1
On
Power is being supplied to power input
PWR2
PWR2
AMBER
Off
Power is not being supplied to power
input PWR2
On
When (1) a relay warning event is
triggered, (2) the NI MES-3980 is the
Master of this Turbo Ring, and the Turbo
Ring is broken, or (3) start-up failure
FAULT
RED
Off
When a relay warning event is not
triggered
On
When the NI MES-3980 is the Master of
this Turbo Ring
Blinking
When the NI MES-3980 is the Ring
Master of this Turbo Ring and the Turbo
Ring gets disconnected
MASTER
GREEN
Off
When the NI MES-3980 is not the Master
of this Turbo Ring
On
When the NI MES-3980 enables the
coupling function to form a backup path
COUPLER
GREEN
Off
When the NI MES-3980 is not the Ring
Coupler of this Turbo Ring
On
TP port’s 10 Mbps link is active
Blinking Data is being transmitted at 10 Mbps
10M
GREEN
Off
TP Port’s 10 Mbps link is inactive
On
TP port’s 100 Mbps link is active
Blinking Data is being transmitted at 100 Mbps
100M
GREEN
Off
TP Port’s 100 Mbps link is inactive
