Set Backlight
This function block is used to modify the backlight setting of the display. This can change the brightness of the screen toward a darker or lighter display.
A brightness value in percent can be assigned to the SetVal input. The output ActVal will show the currently set value. The output Err will show an error number.
Signals
| Name | I/O | Type(s) | Function |
|---|---|---|---|
| SetVal | I | WORD | Brightness value to set in [%] |
| ActVal | O | WORD | Actual brightness value in [%] |
| Err | O | WORD | Error indicator |
Comments
| Error numbers | Result |
|---|---|
| 0 | No error |
| -1 | The board could not be accessed. |
| -2 | The current brightness value could not be read. |
| -3 | The brightness value could not be set. |