Diagnostic LEDs
Display | LED | Color | Description |
|---|---|---|---|
| TC | Green | TwinCAT is in Run mode. |
Red | TwinCAT is in Stop mode. Additionally indicates errors during system startup by error code and error argument (see table: TC-LED, error description and remedy). The red LED flashes with two different frequencies. | ||
Blue | TwinCAT is in Config mode. | ||
Yellow | Error or crash of the PLC. | ||
FB | Green | CAN is OK. | |
Red | CAN in bus-off. | ||
Green and red flashing, 200 ms | CAN warning. | ||
Off | CAN not configured. | ||
DIAG | Green | All nodes have NodeState = 0 | |
Green and red flashing, 200 ms | All boxes in OP mode, but the task has not yet started. | ||
Red 200 ms | Not all nodes in OP mode. | ||
Off | No boxes configured. | ||
Red | If only the DIAG LED lights up when starting the CX70xx, then the bootloader is damaged and the device must be sent in for repair. |
The TC-LED flashes at a specified frequency and in a specified order, thus indicating the error code and argument.
Sequence | Meaning |
|---|---|
Fast flashing | Starting the sequence |
First slow sequence | Error code |
No display | Pause, the LED is off |
Second slow sequence | Error argument |
Count how many times the red TC LED flashes in order to determine the error code and argument.
Error code | Error argument | Description | Remedy |
|---|---|---|---|
1 | 1 | microSD card not recognized | Check the microSD card. |
2 | Card init failed - preloader | Image is defective. Install a new image on the microSD card. | |
3 | No partition found - preloader | ||
4 | Filesystem mount failed - preloader | ||
5 | Card init failed - loader | ||
6 | No partition found - loader | ||
7 | Filesystem mount failed - loader | ||
2 | 1 | Loader not found | |
2 | Loader file invalid (checksum, size, read error) | ||
3 | TC dll not found | ||
4 | TC dll checksum error | ||
5 | EEPROM file missing or invalid | ||
6 | TcOsSys.dll version not compatible with loader | ||
3 | 1 | Rbf not found | |
2 | CCAT 1 init failed | ||
3 | CCAT 2 init failed | ||
4 | CCAT EEPROM writing failed | ||
5 | CCAT 1 EEPROM reloaded failed | ||
6 | CCAT 2 EEPROM reloaded failed | ||
4 | 1 | Peripheral not working | Hardware defective, replace the CX |
2 | Voltage Vo not reached | ||
3 | Low speed external oscillator not running | ||
4 | High speed external oscillator not running | ||
5 | Flash failed | ||
6 | Device overclocked (old Hardware) | ||
5 | 5 | RAM error detected |