FB_DALI103Initialise

The function block prepares the addressing of the DALI control devices.

This function block is required if addressing of the DALI control devices is to be implemented in the PLC. The function block FB_DALI103Addressing can be used to assign the addresses from the PLC.

nParameter is used to define which DALI control devices are taken into account for addressing:

Value (binary)	Description
2#0111_1111	DALI control devices without a short address respond.
2#00AA_AAAA	DALI control devices with the address 2#00AA_AAAA respond.
2#1111_1111	All DALI control devices respond.

	The function block sends the DALI command INITIALIZE twice, as required by the DALI standard for certain DALI commands.

	The function block cannot be used when using the KL6811.

Inputs

VAR_INPUT
  bStart            : BOOL;
  eCommandPriority  : E_DALICommandPriority := E_DALICommandPriority.Middle;
  nParameter        : BYTE := 2#0111 1111;
END_VAR

Name	Type	Description
bStart	BOOL	Execution of the DALI commands is triggered via a positive edge at this input.
eCommandPriority	E_DALICommandPriority	Priority (low, middle low, middle, middle high, high) with which the DALI commands are sent.

	The command priorities are supported by the KL6821 from the firmware version BD.

Name	Type	Description
nParameter	BYTE	Specifies which control devices are to respond to this command (see table above).

Outputs

VAR_OUTPUT
  bError                  : BOOL;
  ipResultMessage         : I_TcMessage;
  bBusy                   : BOOL;
END_VAR

Name	Type	Description
bError	BOOL	This output is switched to TRUE if an error occurs during the execution. Further information about the error can be queried via the variable ipResultMessage. The output is set to FALSE again as soon as bBusy switches to TRUE.
ipResultMessage	I_TcMessage	Interface pointer (see error evaluation) that can be used to obtain detailed information about the processing of the function block (see runtime messages). The interface pointer is valid after bBusy has changed from TRUE to FALSE.
bBusy	BOOL	The output is set as soon as execution of the DALI commands has commenced. It remains active until all DALI commands have been processed.

Properties

Name	Type	Access	Initial value	Description
ipDALICommunication	I_DALICommunication	Get,Set	0	Interface Pointer to the communication block (see Transfer of the reference to the communication block).

Requirements

Development environment	required PLC library
TwinCAT from v3.1.4022.29	Tc3_DALI from v3.1.4.0