Each Krypton slice has 3 green LEDs: L - D - L. The LED blinking codes adhere to the EtherCAT specification.
- L means Link: i.e. the In- (left L-LED) or Out-connector (right L-LED) is linked to another Krypton slice or to the measurement PC,
- D is for Data: it is active only when the Data transfer is active this requires that power is connected AND the slice is linked to another slice or a PC Note: older versions may have the label P (for Protocol) instead of D,
1. INIT state
When you power the Krypton slice and there is no EtherCAT master connected (i.e. DEWESoft is not running or the slice is not connected to the PC), then slice will be in the INIT state. In this state, the D LED will be OFF. The L LED will be ON when you connect another Krypton slice.
When the connection to the PC is lost while the configuration was in the operation state the LED state will change:
The L LED will be ON and the D LED will be slowly blinking.
2. PRE-OP state
In this state the EtherCAT master is detecting the slaves and reads their basic information: the D LED is fast blinking. DEWESoft will set the Krypton slice in the PRE-OP state when you enter the Device settings or when you are loading the setup.
3. SAFE-OP state
In this state the EtherCAT master is already reading the data from the slice/s at a slow sampling rate: the D LED is slowly blinking. DEWESoft will set the Krypton slice/s in the SAFE-OP state when you are in Channel Setup.
4. OP state
In this state the EtherCAT master is reading the data from the slice/s at the desired sampling rate: the D LED is turned ON. DEWESoft will set the Krypton slice/s in the OP state when you are in Measure Mode.