FB_DALI_Loytec_LDALI_MS2

The function block FB_DALI_Loytec_LDALI_MS2 represents the LDALI-MS2-BT or LDALI-MS2 DALI sensor from Loytec.

This outputs a brightness value (instance 0), an occupancy signal (instance 1), a temperature value (instance 2), a relative humidity value (instance 3), three hardware push button signals (instances 4 to 6) and 18 infrared remote control push button signals (instances 7 to 24).

The infrared push button instances can be used via remote control from the vendor.

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

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

Part 301 (push buttons) – Introduction

Part 303 (occupancy sensors) - Introduction

Part 304 (light sensors) - 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 temperature measurement and humidity measurement are executed as Generic Inputs. These values can only be queried via a positive edge at the inputs bQueryTemperature and bQueryHumidity.

For the other instances, the reading can also be triggered directly via the inputs bQueryBrightness and bQueryOccupancy, even if the corresponding instance is not enabled.

	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;
  bQueryOccupancy            : BOOL  := FALSE;
  bQueryBrightness           : BOOL  := FALSE;
  bQueryTemperature          : BOOL  := FALSE;
  bQueryHumidity             : BOOL  := FALSE;
  bCancelHoldTimerOccupancy  : 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 (0…63) of the DALI control device.
nOptions	DWORD	Reserved for future extensions.
bQueryOccupancy	BOOL	The occupancy is queried immediately by a positive edge at this input.
bQueryBrightness	BOOL	The brightness is queried immediately by a positive edge at this input.
bQueryTemperature	BOOL	The temperature is queried immediately by a positive edge at this input. The DALI device does not support transmission of the temperature per event.
bQueryHumidity	BOOL	The relative humidity is queried immediately by a positive edge at this input. The DALI device does not support transmission of the relative humidity per event.
bCancelHoldTimerOccupancy	BOOL	A positive edge at this input prematurely ends the Hold Timer and resets the output bOccupied.

Outputs

VAR_OUTPUT
  bError               : BOOL;
  ipResultMessage      : I_TcMessage;
  bInitializing        : BOOL;
  bReadingOccupancy    : BOOL;
  bReadingBrightness   : BOOL;
  bReadingTemperature  : BOOL;
  bReadingHumidity     : BOOL;
  bOccupied            : BOOL;
  nBrightnessLevel     : UINT;
  fTemperature         : LREAL;
  nHumidity            : BYTE;
  nPushButtonHWNEvent  : WORD;
  nPushButtonIRNEvent  : 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.
bReadingOccupancy	BOOL	The output is TRUE as long as values of the instance of the movement sensor are being read by the DALI control device.
bReadingBrightness	BOOL	The output is TRUE as long as values of the instance of the light sensor are being read by the DALI control device.
bOccupied	BOOL	If the output is TRUE, then occupancy has been detected in the detection range of the occupancy sensor.
nBrightnessLevel	UINT	Measured brightness value of the light sensor.

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

Name	Type	Description
fTemperature	LREAL	Measured temperature value (-5.0…60.0°C) of the temperature sensor.
nHumidity	BYTE	Measured value of the relative humidity (0…100%).
nPushButtonHWNEvent	WORD	The outputs (1…3) output the events for the corresponding push button via one bit for one cycle.
nPushButtonIRNEvent	WORD	The outputs (1...18) output the events for the corresponding infrared button via one bit for one cycle.

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
bEnableBrightness	BOOL	Get, Set	TRUE	TRUE at this property enables the instance for brightness measurement. 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 bQueryBrightness.
bEnableOccupancy	BOOL	Get, Set	TRUE	TRUE at this property enables the instance for motion detection. 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 bQueryOccupancy.
bEnableTemperature	BOOL	Get, Set	FALSE	TRUE at this property enables the instance for temperature measurement. FALSE at this property causes the instance not to be configured during initialization. The actual value of the instance can only be queried via the input bQueryTemperature.
bEnableHumidity	BOOL	Get, Set	FALSE	A TRUE on this property enables the instance to measure relative humidity. FALSE at this property causes the instance not to be configured during initialization. The actual value of the instance can only be queried via the input bQueryHumidity.
bEnablePushButtonHWN	BOOL	Get, Set	FALSE	Push button input 1 to 3, which can be enabled or disabled on the DALI control device. FALSE on this property causes sending of events from this instance to be disabled.
bEnablePushButtonIRN	BOOL	Get, Set	FALSE	Infrared buttons input 1 to 18, which can be enabled or disabled on the DALI control device. FALSE on this property causes sending of events from this instance to be disabled.
eEventPriorityBrightness	E_DALIEventPriority	Get, Set	MiddleLow	Setting of the event priority.
nReportTimerBrightness	BYTE	Get, Set	30 s	Time (0…255 s) after which the pending event of the light sensor is repeated if no other event has occurred in the meantime.
nDeadtimeTimerBrightness	UINT	Get, Set	1500 ms	Dead time (0...12750 ms) to ensure that not too many events are sent in succession. An event is only sent after expiry of the dead time timer. The dead time timer is restarted each time after an event has been sent.
nHysteresisBrightness	BYTE	Get, Set	5 %	Value (0…25 %) for calculating a hysteresis value in order to prevent frequent and disturbing changes when measuring the brightness.
nHysteresisMinBrightness	BYTE	Get, Set	255	As the percentage hysteresis can also lead to large fluctuations at low brightness, a minimum hysteresis can be specified via this property. The minimum hysteresis is an absolute value with a range from 0 to 255.
eEventPriorityOccupancy	E_DALIEventPriority	Get, Set	Middle	Setting of the event priority.
nDeadtimeTimerOccupancy	UINT	Get, Set	100 ms	Dead time (0...12750 ms) to ensure that not too many events are sent in succession. An event is only sent after expiry of the dead time timer. The dead time timer is restarted each time after an event has been sent.
nHoldTimerOccupancy	UINT	Get, Set	900 s	Hold time (1...2538 s) during which the occupancy is still active after no further motion was detected by the sensor.
nReportTimerOccupancy	BYTE	Get, Set	60 s	Time (0…255 s) after which the pending event of the occupancy sensor is repeated if no other event has occurred in the meantime.
eEventPriorityPushButtonHWN	E_DALIEventPriority	Get, Set	Middle	Setting of the event priority.
nEventFilterPushButtonHWN	BYTE	Get, Set	2#1000_0011	Setting of the event filter.
nDoubleTimerPushButtonHWN	UINT	Get, Set	0 s	Time (0, tDoubleMin…2000 ms) to distinguish between a single and a double button press.
nRepeatTimerPushButtonHWN	UINT	Get, Set	160 ms	Interval (100…2000 ms) of repetitive events in the case of a long button press.
nShortTimerPushButtonHWN	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.
nStuckTimerPushButtonHWN	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.
eEventPriorityPushButtonIRN	E_DALIEventPriority	Get, Set	Middle	Setting of the event priority.
nEventFilterPushButtonIRN	BYTE	Get, Set	2#1000_0011	Setting of the event filter.
nDoubleTimerPushButtonIRN	UINT	Get, Set	0 s	Time (0, tDoubleMin…2000 ms) to distinguish between a single and a double button press.
nRepeatTimerPushButtonIRN	UINT	Get, Set	160 ms	Interval (100…2000 ms) of repetitive events in the case of a long button press.
nShortTimerPushButtonIRN	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.
nStuckTimerPushButtonIRN	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 v3.1.4024.15	Tc3_DALI from v3.6.2.0