FB_DALI102SetMaxLevel

The function block stores the value nMaxLevel in the variable maxLevel of the DALI control gear.

If a value smaller than minLevel is specified, the value is set to minLevel.

If the value 255 (MASK) is specified, maxLevel is automatically set to 254.

	The function block changes the DTR0 of all connected DALI control gears.

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

Inputs

VAR_INPUT
  bStart              : BOOL;
  nAddress            : BYTE;
  eAddressType        : E_DALIAddressType := E_DALIAddressType.Short;
  eCommandPriority    : E_DALICommandPriority := E_DALICommandPriority.MiddleLow;
  nMaxLevel           : BYTE := 254;
END_VAR

Name	Type	Description
bStart	BOOL	Execution of the DALI commands is triggered via a positive edge at this input.
nAddress	BYTE	Address of a DALI control gear or a DALI group.
eAddressType	E_DALIAddressType	Defines whether the input nAddress contains a short address (0…63) or a group address (0…15). The input nAddress has no meaning if a broadcast or a broadcast to unaddressed devices (BroadcastUnaddr) has been selected.
eCommandPriority	E_DALICommandPriority	Priority (low, middle low, middle, middle high, high) with which the DALI commands are sent.

	eCommandPriority has no function with the KL6811. The DALI command priorities are supported by the KL6821 from the firmware version BD.

Name	Type	Description
nMaxLevel	BYTE	Maximum allowed output value (minLevel...254).

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