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.

Bit 1 (Color temperature Tc out of range) is set in COLOR STATUS if the color temperature cannot be reached by the DALI control gear. This command is executed by the DALI control gear only if bit 5 (Color type color temperature Tc active) is set in the variable COLOR STATUS.

The functions KELVIN_TO_MIREK and MIREK_TO_KELVIN are available for converting from or to Kelvin.

The function block supports the 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. The command Enable Device Type 8 is internally placed automatically before all application extended commands for lamps for the color/color temperature control with DALI interface.

FB_DALIV2ColourTemperatureTcStepCooler 3: Inputs

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

Name

Type

Description

bStart

BOOL

The function block is activated by a positive edge at this input.

nAddr

BYTE

The address of a device or of a group

eAddrType

E_DALIV2AddrType

Short address, group address or broadcast

eCommandPriority

E_DALIV2CommandPriority

Priority (high, medium or low) with which the command is processed by the library.

FB_DALIV2ColourTemperatureTcStepCooler 4: Inputs/outputs

VAR_IN_OUT
  stCommandBuffer : ST_DALIV2CommandBuffer;
END_VAR

Name

Type

Description

stCommandBuffer

ST_DALIV2CommandBuffer

Reference to the internal structure for communication with FB_KL6811Communication (KL6811) or FB_KL6821Communication (KL6821).

FB_DALIV2ColourTemperatureTcStepCooler 5: Outputs

VAR_OUTPUT
  bBusy    : BOOL;
  bError   : BOOL;
  nErrorId : UDINT;
END_VAR

Name

Type

Description

bBusy

BOOL

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

bError

BOOL

This output is switched to TRUE as soon as 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 a command at the inputs.

nErrorId

UDINT

Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of a command at the inputs (see error codes).

Requirements

Development Environment

PLC library to include

TwinCAT from v3.1.4020.14

Tc2_DALI from v3.4.3.0