This control can split an RGB channel into its color components red, green and blue and write them to individual channels whenever the RGB value changes (splitter function). The reverse direction, from individual color components to RGB, is also possible.
The channels of the individual components can be either of type percent (0-100) or simply of type number (0-255). Not all inputs/outputs need to be assigned. Unassigned inputs are assumed to be 0.
Special features
This control cannot be visualized. For visualization, use e.g. a regular light control or value display.
Inputs/outputs
The RGB input is the splitter input that updates the Red, Green, Blue and White outputs. The Red, Green, Blue and White inputs implement the join function and are output combined on the RGB output. The separation between split/join corresponds to the KNX philosophy of command/status addresses. However, it is also possible to use the same channels for both split and join. The control detects when an input value was output by the control itself and does not interpret this as an update.
In most use cases, the component inputs/outputs will be KNX channels, and a virtual channel must be created for each of the RGB input and output. A light control, for example, can then send commands and receive status via the RGB channels.
| Name | Function |
|---|---|
| RGB input | Input channel whose update causes the outputs for red, green and blue to be written. |
| Red output | Channel to which the red component of the RGB input is written. |
| Green output | Channel to which the green component of the RGB input is written. |
| Blue output | Channel to which the blue component of the RGB input is written. |
| White output | Channel to which the white component of the RGB input is written. If the RGB value has no white component, 0 is output here. |
| RGB output | Channel that is updated with the (W)RGB value composed from the component inputs red, green, blue and possibly white. Every value update on one of the inputs results in an update of this output. |
| Red input | Channel from which the red component of the RGB output is received. |
| Green input | Channel from which the green component of the RGB output is received. |
| Blue input | Channel from which the blue component of the RGB output is received. |
| White input | Channel from which the white component of the RGB output is received. If this input is assigned, a WRGB output value is produced (the white tone is then stored in bits 24-31 of the RGB value; otherwise these are 0). |
The White output should not be assigned if the purpose is connecting to a light control, as the light control does not supply a white value when the color is set (the white tone would then be set to 0). In that case, the White input is not needed either.