| LED Color | LED Pattern | Indication |
|---|---|---|
| Green | Solid | The cRIO-9042 is powered from the V1 input. |
| Yellow | Solid | The cRIO-9042 is powered from the V2 input. |
| — | Off | The cRIO-9042 is powered off. |
| LED Color | LED Pattern | Indication |
|---|---|---|
| Yellow | Blinks twice and pauses |
The cRIO-9042 is in safe mode. Software is not installed, which is the factory default state, or software has been improperly installed on the cRIO-9042. An error can occur when an attempt to upgrade the software is interrupted. Reinstall software on the cRIO-9042. |
| Blinks three times and pauses |
The cRIO-9042 is in user-directed safe mode, or the cRIO-9042 is in install mode to indicate that software is currently being installed. This pattern may also indicate that the user has forced the cRIO-9042 to boot into safe mode by pressing the reset button for longer than five seconds or by enabling safe mode in MAX. |
|
| Blinks four times and pauses |
The cRIO-9042 is in safe mode. The software has crashed twice without rebooting or cycling power between crashes. |
|
| Continuously blinks |
The cRIO-9042 has not booted into NI Linux Real-Time. The cRIO-9042 either booted into an unsupported operating system, was interrupted during the boot process, or detected an unrecoverable software error. |
|
| On momentarily |
The cRIO-9042 is booting. No action required. |
|
| Red | Continuously blinks |
This indicates a hardware error. An internal power supply has failed. Check front-panel I/O and C Series module connections for shorts. Remove any shorts and cycle power the cRIO-9042. If the problem persists, contact NI. |
| Solid | The cRIO-9042 internal temperature has exceeded a critical threshold. Ensure the ambient operating temperature does not exceed the specified operating temperature. If the problem persists, contact NI. | |
| — | Off |
The cRIO-9042 is in run mode. Software is installed and the operating system is running. |
| LED | LED Color | LED Pattern | Indication |
|---|---|---|---|
| ACT/LINK | - | Off | LAN link not established |
| Green | Solid | LAN link established | |
| Flashing | Activity on LAN | ||
| 10/100/1000 | Yellow | Solid | 1,000 Mbit/s data rate selected |
| Green | Solid | 100 Mbit/s data rate selected | |
| - | Off | 10 Mbit/s data rate selected |
| LED | LED Color | LED Pattern | Indication |
|---|---|---|---|
| SD IN USE | Green | Off | There is no SD card present in the slot or the cRIO-9042 has unmounted the SD card from the operating system. It is safe to remove the SD card from the slot. |
| Solid | The SD card in the slot is mounted in the operating system. Do not remove the SD card while this LED is lit. |