FB_DALI_Helvar_8ButtonModule

The function block represents the 8 Button DALI push button interface module from Helvar.

Up to eight push buttons (instances 0 to 7) can be connected directly via the DALI device.

For information on the exact functions of the individual instances, please refer to the manufacturer's device documentation.

Further information on the supported instance types can be found here:

Part 301 (push buttons) - Introduction

The existing parameters can be overwritten by changing the properties listed below. All parameters are written to the DALI control device by a positive edge at bInitialize and stored there.

The outputs with the output values of the DALI device only contain valid values if the function block was executed without errors (bError = FALSE). If the output bError = TRUE, the outputs with the output values must not be evaluated.

The reading of the corresponding instance can be triggered immediately via the input variable bQueryInputValueN, even if the corresponding instance is not enabled.

The properties bEnablePushButtonN make it possible to disable individual instances.

	Set the times so that as few events as possible are sent. If too many events are sent, this can have a negative effect on the behavior of the application.

	The function block cannot be used when using the KL6811.

Inputs

VAR_INPUT
  bInitialize          : BOOL  := FALSE;
  nShortAddress        : BYTE  := 0;
  nOptions             : DWORD := 0;
  bQueryInputValue1    : BOOL := FALSE;
  bQueryInputValue2    : BOOL := FALSE;
  bQueryInputValue3    : BOOL := FALSE;
  bQueryInputValue4    : BOOL := FALSE;
  bQueryInputValue5    : BOOL := FALSE;
  bQueryInputValue6    : BOOL := FALSE;
  bQueryInputValue7    : BOOL := FALSE;
  bQueryInputValue8    : BOOL := FALSE;
END_VAR

Name	Type	Description
bInitialize	BOOL	The configuration of the DALI control device is started by a positive edge at this input. During this time no DALI commands are processed.
nShortAddress	BYTE	Short address of the DALI control device.
nOptions	DWORD	Reserved for future extensions.
bQueryInputValueN	BOOL	The state of the corresponding push button is queried immediately by a positive edge at this input.

Outputs

VAR_OUTPUT
  bError                 : BOOL;
  ipResultMessage        : I_TcMessage;
  bInitializing          : BOOL;
  bReadingInputValue1    : BOOL;
  bReadingInputValue2    : BOOL;
  bReadingInputValue3    : BOOL;
  bReadingInputValue4    : BOOL;
  bReadingInputValue5    : BOOL;
  bReadingInputValue6    : BOOL;
  bReadingInputValue7    : BOOL;
  bReadingInputValue8    : BOOL;
  nPushButton1Event      : WORD;
  nPushButton2Event      : WORD;
  nPushButton3Event      : WORD;
  nPushButton4Event      : WORD;
  nPushButton5Event      : WORD;
  nPushButton6Event      : WORD;
  nPushButton7Event      : WORD;
  nPushButton8Event      : WORD;
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.
bInitializing	BOOL	The output is set as soon as the initialization of the DALI control device has been started, and remains active until all DALI commands have been executed.
bReadingInputValueN	BOOL	The outputs are set as soon as the manual reading of the corresponding input has been triggered.
nPushButtonNEvent	BOOL	The outputs output the events for the corresponding push button via one bit for one cycle.

	This measured value must be compared with the measured reference values at the place of operation of the DALI control device.

Bit	Description
0	Push button released.
1	Push button pressed.
2	Short keystroke.
3	Double keystroke.
4	Start long keystroke.
5	Repeat long keystroke.
6	Stop long keystroke.
7	Push button free again; was previously blocked.
8	Push button blocked.

The function block FB_DALI_ToPushButtonState can be used to convert the state of a push button into a BOOL variable.

Properties

All parameters that are written to the DALI control device via bInitialize are available as properties.

The properties of instances of the same type are listed only once in the table and marked with N at the end.

Name	Type	Access	Initial value	Description
bEnablePushButtonN	BOOL	Get, Set	TRUE	FALSE on this property causes sending of events from this instance to be disabled. However, the actual value of the instance can still be queried via the input bQueryPushButtonN.
nEventFilterPushButtonN	BYTE	Get, Set	2#1000_0011	Setting of the event filter.
eEventPriorityPushButtonN	E_DALIEventPriority	Get, Set	Middle	Setting of the event priority.
nDoubleTimerPushButtonN	UINT	Get, Set	0 ms	Time (0, tDoubleMin…2000 ms) to distinguish between a single and a double button press.
nRepeatTimerPushButtonN	UINT	Get, Set	160 ms	Interval (100…2000 ms) of repetitive events in the case of a long button press.
nShortTimerPushButtonN	UINT	Get, Set	500 ms	Time (tShortMin...5100 ms) to distinguish between a long and a short button press. tShortMin is a manufacturer-specific value.
nStuckTimerPushButtonN	BYTE	Get, Set	20 s	Time (5…255 s) after whose expiry the push button no longer represents a long button press. The push button is stuck.
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 v3.1.4024.32	Tc3_DALI from v3.12.0.0