Parameters for colour control

The gateway can be used to control the light colour when using DALI operating devices of device type "DT8 - Colour Control". The gateway enables flexible colour control in the colour spaces "RGB", "RGBW", "HSV" or "HSVW". In the RGB colour spaces, the colours "red", "green", "blue" and optionally also "white" can be directly controlled by combined or separate communication objects according to the KNX specification. In the HSV colour spaces, separate objects are always available for controlling the light colour by absolute values for hue (H), saturation (S) and brightness value (V) and optionally also for the white value (W).

Whether the colour space is available with or without the white value "W" is set in the general configuration of the groups and single devices under "DALI system... -> Configuration groups" or "DALI system... -> Configuration Single Devices".

RGB combined: The colours "red", "green", "blue" and optionally also "white" are individually controlled by absolute values by means of a common object. This object is 3 bytes in size (DPT 232.600). In addition to the default object, another object of the same data type is available for the status indication of the currently set colour. The gateway transmits the RGBW colours received from the KNX directly to the DALI side.

RGBW combined: The colours "red", "green", "blue" and optionally also "white" are individually controlled by absolute values by means of a common object. This object is 6 bytes in size (DPT 251.600). The transmitted default colours are evaluated only if the corresponding 1-bit enable flags (bits 0...3) are in the data value "1". With "0", the respective colour is ignored. In addition to the default object, another object of the same data type is available for the status indication of the currently set colour. The gateway transmits the RGBW colours received from the KNX directly to the DALI side.

RGB individually: The colours "red", "green" and "blue" are individually controlled by separate objects. Switching (DPT 1.001 / ON & OFF), relative dimming (DPT 3.007 / dimming the colour intensity up and down incl. stop) and the specification of an absolute value (DPT 5.001 / 0...100%) are possible for each colour. If required, a status object is available for each colour, which indicates the absolute colour value set (DPT 5.001 / 0...100%). The gateway transmits the RGB colours received from the KNX directly to the DALI side.

RGBW individually: The colours "red", "green" and "blue" and "white" are individually controlled by separate objects in each case. Switching (DPT 1.001 / ON & OFF), relative dimming (DPT 3.007 / dimming the colour intensity up and down incl. stop) and the specification of an absolute value (DPT 5.001 / 0...100%) are possible for each colour. If required, a status object is available for each colour that indicates the set absolute colour value (DPT 5.001 / 0...100%). The gateway transmits the RGBW colours received from the KNX directly to the DALI side.

HSV: The colours "red", "green" and "blue" are individually controlled in the HSV colour space as an absolute value specification by separate 1-byte objects for the hue (H / DPT 5.003 / 0...360°), saturation (S / DPT 5.001 / 0...100%) and brightness value (V / DPT 5.001 / 0...100%). The gateway calculates the RGB values used in the DALI from the specified HSV values. In addition to the default objects, four other objects of the same data types are available for the status indication of the colour currently set.

HSVW: The colours "red", "green" and "blue" are individually controlled in the HSV colour space as an absolute value specification by separate 1-byte objects for the hue (H / DPT 5.003 / 0...360°), saturation (S / DPT 5.001 / 0...100%) and brightness value (V / DPT 5.001 / 0...100%). The white value is optionally specified by a separate 1-byte object (DPT 5.001 / 0...100%). The gateway calculates the RGB values used in the DALI from the specified HSV values. In addition to the default objects, four other objects of the same data types are available for the status indication of the colour currently set.

At this point, the colour can be specified, which is set every time the DALI operating devices are switched on. This parameter defines the switch-on colour value separately for each group and each single device.

Track: When switching on, the colour value specified last and internally tracked in the "Brightness 0%" state is set. The tracked colour is not influenced by an ETS programming operation or by a bus voltage failure ("no change"). When the bus/mains voltage returns, the colour most recently active before the bus/mains voltage failure is restored. Consequently, this colour is taken into account as a value to be tracked when switching on.

Preset: The set colour is displayed on receipt of an ON telegram by the communication objects "Switching - Setting" or "Colour ... (Switching) - Setting" or when receiving a central telegram with the polarity "activated". In the "RGB individually" or "RGBW individually" colour spaces, only the corresponding colour value (red, green or blue) is evaluated in the parameter when switching on with the objects "Colour ... (Switching)". All other colour values remain unchanged. When a colour is switched on, the gateway always also switches on the brightness in the configured switch-on brightness.

Memory value (value before the last switch-off): When switching on, the colour is set that was active and stored internally before the last switch-off. This memory value is composed of the colour value and the optional white value and is stored in a non-volatile manner in the gateway so that the value is retained after a bus or mains voltage return. After an ETS programming operation, the memory colour value is predefined at "#FFFFFF" and the optional white value at "#FF".

Setting the switch-on colour value by means of the ETS colour picker. In the HSV colour space, the HSV values are calculated from the RGB values by means of the colour picker.

This parameter is only available in the setting "Switch-on colour = preset".

Setting of the white value of the switch-on colour.

This parameter is available only in the setting "Switch-on colour = preset" in the colour spaces "RGBW combined", "RGBW individually" and "HSVW".

This parameter defines the dimming behaviour for absolute dimming by means of the object "Colour ... (value) - Setting" for a group or single device.

jumping to: As soon as a new colour value is received it will be instantly jumped to. Even if colour values are instantly jumped to, the dimming procedure on DALI operating devices always takes a very short time. This dimming procedure is dependent on the system. The colour value jumped to will be dimmed to within 0.7 seconds (short fading). This time cannot be altered.

Fading: As soon as a new colour value is received, the gateway sets this value within the specified fading time.

Relative dimming can be triggered by the existing 4-bit communication object "Colour ... (Dimming) - Setting" for each colour or optionally also triggered by the object "White (Dimming) - Setting". The data format of these objects - as well as with relative dimming of the brightness - complies with the KNX DPT 3.007, which means that the dimming direction and relative dimming increments can be predefined in the dimming telegram or dimming procedures can also be stopped. A relative dimming process allows the colour intensity to be changed continuously.

The dimming speed for relative dimming of the colour can be configured at this point.

This parameter is available only in the colour spaces "RGB individually" and "RGBW individually".

An absolute colour telegram can also switch on a group or single device in the "OFF" state, with the behaviour set by this parameter.

Switch-on: The group or the single device switches on in the "OFF" state by an absolute colour telegram in the configured switch-on brightness. The colour is set to the received colour value. If the colour dimming behaviour is configured to "jumping to", the intended colour value is set immediately. When the dimming behaviour is set to "Fading...", the dimming process starts at the colour value most recently set by the gateway or that was tracked in the "OFF" state. The dimming process is executed according to the set fading time. After reaching the intended colour, the dimming process stops.

No reaction: The group or the single device does not switch on in the "OFF" state by the absolute colour telegram. The group or single device remains switched off. The next time the device is switched on, the last colour value received is tracked only if the "Switch-on colour" parameter is set to "track".

A relative colour dimming telegram can also switch on a group or single device in the "RGB individually" and "RGBW individually" colour space in the "OFF" state, with the behaviour set by this parameter. The colours "red", "green", "blue" and optionally also "white" are individually controlled by separate 4-bit objects.

Switch-on: The group or single device switches on in the configured switch-on brightness in the "OFF" state by a relative colour dimming telegram. The colour is set to the configured switch-on colour. Based on this colour state, the colour to be dimmed is dimmed. The relative dimming telegram that leads to switching on, specifies the dimming direction and dimming increment. After reaching the intended colour, the dimming process stops.

No reaction: The group or the single device in the "OFF" state is not switched on by the relative colour dimming telegram. The group or single device remains switched off. The next time the device is switched on, the last dimmed colour value is tracked only if the "Switch-on colour" parameter is set to "track".