KNX_Write_DPT_2x

KNX_Write_DPT_2x (FB)

FUNCTION_BLOCK KNX_Write_DPT_2x EXTENDS SlaveBasicWr

Overview

Send function for DPT 2.x (2-bit value).

Inputs

Inputs	Initial value	Description
xUpdateSetp	FALSE	Trigger for target value update
xValue	-	Main value to send (BOOL)
xPrio	-	Priority value to send (BOOL)
xWriteVisu	-	Trigger for one-time send
eDPT_Format	-	DPT 2.x format selection
byAdrGroup	0	Group address (0-255)
byAdrMiddleGroup	0	Middle group address (0-7)
byAdrMainGroup	0	Main group address (0-31)
tTimeUpdateSetp	T#0S	Cyclic update interval
tPauseTimeUntilNextSend	T#3S	Send pause

Outputs

• tNextWrite (TIME): Time until the next write operation

• xLastBusValue (BOOL): Last received main value

• xControlBit (BOOL): Last received control bit (priority)

Usage

1. Select the DPT 2.x format with eDPT_Format.

2. Set the main value to send in xValue and the priority value in xPrio.

3. Configure the sending options:

   • For cyclic sending: tTimeUpdateSetp > T#0S

   • For event-based sending: Use xUpdateSetp or xWriteVisu

4. Monitor xLastBusValue for the last received main value.

5. Note xControlBit for the last received priority value.

InOut:

Scope	Name	Type	Initial	Comment	Inherited from
Input	itfKnxConnector	IKnxConnector		IMasterConnector interface input to register/unregister the FB to the List on the Master	SlaveBasicWr
Input	xEnable	BOOL	TRUE		SlaveBasicWr
Output	sPhysicallAddressDevice	STRING(15)			SlaveBasicWr
Output	sGroupAddress	STRING(15)			SlaveBasicWr
Input	xUpdateSetp	BOOL	FALSE	Update of setpoints ( on each rising edge )
Input	xValue	BOOL
Input	xPrio	BOOL
Input Const	xWriteVisu	BOOL		Read once
Input Const	eDPT_Format	DPT_2x		Enum DPT_2x
Input Const	byAdrGroup	BYTE	0	Groupaddress
Input Const	byAdrMiddleGroup	BYTE	0	Middle-Group-Address
Input Const	byAdrMainGroup	BYTE	0	Main-Group-Adress
Input Const	tTimeUpdateSetp	TIME	TIME#0ms	Update interval for the operations influenced by the input ‘xUpdateSetp’ 0 = no automatic update, > 0 cyclic update
Input Const	tPauseTimeUntilNextSend	TIME	TIME#3s0ms	Pause after sending 0 = no pause
Output	tNextWrite	TIME
Output	xLastBusValue	BOOL
Output	xControlBit	BOOL