FB_DALIV2ColourTemperatureTcStepCooler

FB_DALIV2ColourTemperatureTcStepCooler 1:

The COLOUR TEMPERATURE Tc value is decremented by 1 Mirek without cross-fading. If the value COLOUR TEMPERATURE Tc already has the value COLOUR TEMPERATURE Tc COOLEST, no change is made.
If the color temperature cannot be reached by the DALI control gear, bit 1 (Colour temperature Tc out of range) is set in COLOUR STATUS. This command is only executed by the DALI control gear if bit 5 (Color type color temperature Tc active) is set in the variable COLOUR STATUS.
For the conversion from or to Kelvin the functions KELVIN_TO_MIREK and MIREK_TO_KELVIN are available.

The function block supports the following color representations:

FB_DALIV2ColourTemperatureTcStepCooler 2:

This command belongs to the application extended commands for lamps for the color/color temperature control with DALI interface. These only work if they are preceded by the Enable Device Type 8 command, which can be sent with the function block FB_DALIV2EnableDeviceType(). From version 2.6.0 of the libraries TcDALIV2 and TcDALIV2AppExtCmds, however, the Enable Device Type 8 command is internally placed automatically before all application extended commands for lamps for color/color temperature control with DALI interface.

VAR_INPUT

bStart             : BOOL;
nAddr              : BYTE;
eAddrType          : E_DALIV2AddrType := eDALIV2AddrTypeShort;
eCommandPriority   : E_DALIV2CommandPriority := eDALIV2CommandPriorityMiddle;

bStart: The block is activated by a rising edge at this input.

nAddr: The address of a participating device or of a group.

eAddrType: Short address, group address or broadcast.

eCommandPriority: The priority (high, middle, low) this command has when executed by the library.

VAR_OUTPUT

bBusy          : BOOL;
bError         : BOOL;
nErrorId       : UDINT;

bBusy: When the block is activated the output is set, and it remains active until execution of the command has been completed.

bError: This output is switched to TRUE if an error occurs during the execution of a command. The command-specific error code is contained in nErrorId. Is reset to FALSE by the execution of an instruction at the inputs.

nErrorId: Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of an instruction at the inputs. See Error codes.

VAR_IN_OUT

stCommandBuffer    : ST_DALIV2CommandBuffer;

stCommandBuffer: A reference to the structure for communication with the FB_DALIV2Communication() (KL6811) or FB_KL6821Communication() (KL6821) block.

Requirements

Development environment

Target system

Required libraries

TwinCAT 2.11 R3/x64 from Build 2244

PC/CX, BX or BC

TcDALIV2 library from V2.10.0