KNX_Write_DPT_14x

KNX_Write_DPT_14x (FB)

FUNCTION_BLOCK KNX_Write_DPT_14x EXTENDS SlaveBasicWr

Overview

Send function for DPT 14.x (4-byte floating point number).

Inputs

Inputs	Initial value	Description
xUpdateSetp	FALSE	Trigger for setpoint update
rValue	-	REAL value to be sent
xWriteVisu	-	Trigger for one-time send
rDelta	0.5	Threshold for value change detection
eDPT_Format	-	DPT 14.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

• sUnit (STRING[10]): Unit of the value

• tNextWrite (TIME): Time until next write operation

• rLastBusValue (REAL): Last received value

Usage

1. Select the DPT 14.x format with eDPT_Format.

2. Set the value to be sent in rValue.

3. Configure the send options:

   • For cyclic sending: tTimeUpdateSetp > T#0S

   • For event-based sending: use xUpdateSetp or xWriteVisu

4. Adjust rDelta to set the sensitivity for value changes.

5. Monitor rLastBusValue for received values and sUnit for the unit.

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 setpoint values (on every rising edge )
Input	rValue	REAL
Input Const	xWriteVisu	BOOL		Single Read
Input Const	rDelta	REAL	0.5	Specification of the delta value (value >= 0)
Input Const	eDPT_Format	DPT_14x		Enum DPT_14x
Input Const	byAdrGroup	BYTE	0	Group address
Input Const	byAdrMiddleGroup	BYTE	0	Middle group address
Input Const	byAdrMainGroup	BYTE	0	Main group address
Input Const	tTimeUpdateSetp	TIME	TIME#0ms	Update interval for 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	sUnit	STRING(10)
Output	tNextWrite	TIME
Output	rLastBusValue	REAL