FB_DALI102QueryControlGearFailure

FB_DALI102QueryControlGearFailure 1:

The function block checks whether there is a defect in one or more DALI control gears.

This function block can be used to determine whether there are defective DALI control gears on a DALI line. For this purpose, the function block is called with the parameter eAddressType = E_DALIAddressType.Broadcast. If the outputs bControlGearFailure = FALSE and bError = FALSE, there is no defect in any DALI control gear. If the output bControlGearFailure = TRUE and bError = FALSE, a DALI control gear is defective. If multiple DALI control gears are defective, a 27 (multiple DALI control gears have responded) is returned to ipResultMessage.nEventId.

Inputs

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

Outputs

VAR_OUTPUT
  bError                  : BOOL;
  ipResultMessage         : I_TcMessage;
  bBusy                   : BOOL;
  bControlGearFailure     : 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.
ControlGearFailure	BOOL	The output is set as soon as a defect has been detected in the queried DALI control gear.

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 v3.1.4024.29	Tc3_DALI from v3.11.0.0