18
|
ni.com
|
NI roboRIO User Manual
•
No parity
•
One stop bit
•
No flow control
User Button
The User Button produces a logic TRUE when depressed and a logic FALSE when not
depressed. The User Button is not debounced in hardware.
LED Indications
Power LED
The Power LED is a tri-color red/green/yellow LED that indicates specific conditions, as shown
in Table 13.
Table 13.
Power LED Indications
Color
State
Indication
Off
Off
Power is outside valid input range.
Green
Solid
Power is valid with no fault condition.
Red
Solid
Fault condition detected. One or more user voltage rails are
in short-circuit or overcurrent condition.
Red
Flashing
The input voltage is too high (greater than 16 V) and all
outputs, including the RSL output, are disabled.
Yellow
Solid
Brownout condition detected. The 6 V user rail and
outputs are disabled.
