FB_DALIV2QueryBallast

FB_DALIV2QueryBallast 1:

The function block FB_DALIV2QueryBallast provides information on whether a specific control gear is ready to operate.

Using this command, it can easily be determined whether or not any control gears at all are connected to a DALI line. To do this, the function block with the parameter eAddrType = eDALIV2AddrTypeBroadcast is called. If the output bBallast is FALSE and output nError is 0, there is no control gear connected to the DALI line. If the output nError is 0 and the output bBallast is TRUE, there is exactly one control gear connected to the DALI line. If several control gears are connected, nError will return 5 (several control gears have responded). In this case it is irrelevant whether or not the control gears have short addresses.

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.

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).

Outputs

VAR_OUTPUT
  bBusy    : BOOL;
  bError   : BOOL;
  nErrorId : UDINT;
  bBallast : BOOL;
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).
bBallast	BOOL	If the output is active, the corresponding control gear is ready to operate.

Requirements

Development Environment	PLC library to include
TwinCAT from v3.1.4020.14	Tc2_DALI from v3.4.3.0