LED
Indication of Fill Level
The LED can indicate the fill level in two ways. This behavior can be set via IO-Link Parameter Level Display Mode.
- Color Gradient – The color changes continuously depending on the fill level.
- Output Switch Points – The LED behavior changes in four steps defined by the set points of the digital outputs (Pins 2, 4, 5). This method is working regardless which Pin Function is configured for the three pins.
For both modes, special "empty" and "full" states can be signaled additionally. These states have dedicated trigger fill levels, which can be configured via IO-Link Parameters LED Set Point 'Empty' and LED Set Point 'Full'.
If Pin 2 or 5 is configured to be an input, it can trigger another LED state by a high signal level to indicate a special system state.
The actual LED behavior for those states is managed by Scene settings, which can be configured via dedicated IO-Link Parameters.
Scene Assignment
| Scene | Color Gradient Mode | Output Switch Points Mode | Example |
|---|---|---|---|
| 0 | Fill level lower than "LED Set Point Empty" | Fill level lower than "LED Set Point Empty" | Red, flashing |
| 1 | Reference color 0% | Fill level lower than all output set points | Red |
| 2 | n/a | Fill level higher than one output set point | Orange |
| 3 | n/a | Fill level higher than two output set points | Yellow |
| 4 | Reference color 100% | Fill level higher than all output set points | Green |
| 5 | Fill level higher than "LED Set Point Full" | Fill level higher than "LED Set Point Full" | Green, flashing |
| 6 | High signal on any input pin | High signal on any input pin | Blue, flashing |
Control Options via IO-Link
In an IO-Link application, the LED can be controlled via cyclic Process Data. This feature can be enabled and configured via IO-Link Parameter LED Control Mode.
Three options are available:
- Control by device – The LED is not controlled by Process Data, but by the sensor itself as described above.
- Scene control – Process Data sets the active Scene (0...6) of the LED or asks the sensor to indicate the fill level with the configured Level Display Mode.
- Advanced control – Process Data directly controls the RGB color components, brightness, and effects of the LED.