KNX_Read_DPT_1x

KNX_Read_DPT_1x (FB)

FUNCTION_BLOCK KNX_Read_DPT_1x EXTENDS SlaveBasic

Overview

Read function for DPT 1.x (1-bit).

Inputs

Inputs	Initial value	Description
xRequest	FALSE	Trigger for single read
xRequestVisu	FALSE	Trigger for single read (visualization)
tRequestTime	T#0S	Interval for cyclic reading
eDPT_Format	-	DPT 1.x format selection
byAdrGroup	0	Group address (0-255)
byAdrMiddleGroup	0	Middle group address (0-7)
byAdrMainGroup	0	Main group address (0-31)
xInitValue	FALSE	Initial value at InitOption.InitValue
eInitOption	-	Initialization option

Outputs

• xValue (BOOL): Received boolean value

• Encoding (STRING[15]): Textual representation of the value

• tNextRequest (TIME): Time until next read operation

Usage

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

2. Configure the read options:

   • For cyclic reading: tRequestTime > T#0S

   • For event-based reading: use xRequest or xRequestVisu

3. Set eInitOption and if applicable, xInitValue for the initialization.

4. Monitor xValue for received values and Encoding for the textual representation.

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	SlaveBasic
Input	xEnable	BOOL	TRUE		SlaveBasic
Output	sPhysicallAddressDevice	STRING(15)			SlaveBasic
Output	sGroupAddress	STRING(15)			SlaveBasic
Input	xRequest	BOOL		Single Read
Input Const	xRequestVisu	BOOL		Single Read
Input Const	tRequestTime	TIME	TIME#0ms	Monitoring time
Input Const	eDPT_Format	DPT_1x		Enum DPT_1x
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	xInitValue	BOOL
Input Const	eInitOption	InitOption
Output	xValue	BOOL
Output	Encoding	STRING(15)
Output	tNextRequest	TIME