FB_BA_Analog3Pnt

The template converts a continuous control signal for the positioning of a 3-point actuator into the binary switching commands Open/Close.

	The initialization of the template takes place within the method FB_Init.

Block diagram

Syntax

FUNCTION_BLOCK FB_BA_Analog3Pnt EXTENDS FB_BA_View
VAR_INPUT
  fValPgm     : REAL;
END_VAR
VAR_OUTPUT
  bOpn        : BOOL;
  bCls        : BOOL;
END_VAR
VAR_INPUT CONSTANT
  HysPos      : FB_BA_AV_Op;
  TiOpn       : FB_BA_AV_Op;
  TiCls       : FB_BA_AV_Op;
  Pos         : FB_BA_AV_Op;
END_VAR
VAR
  Anlg3Pnt    : FB_BA_Anlg3Pnt;
END_VAR

Inputs

Name	Type	Description
fValPgm	REAL	Control value for the position of the actuator.

Outputs

Name	Type	Description
bOpn	BOOL	Output for opening the actuator.
bCls	BOOL	Output for closing the actuator.

Inputs CONSTANT

Name	Type	Description
HysPos	FB_BA_AV_Op	AV object for entering the hysteresis value to start the position change.
TiOpn	FB_BA_AV_Op	AV object for entering the opening time value.
TiCls	FB_BA_AV_Op	AV object for entering the closing time value.
Pos	FB_BA_AV_Op	Display of the calculated position.

VAR

Name	Type	Description
Anlg3Pnt	FB_BA_Anlg3Pnt	The function block is the core of the template and intended for controlling the three-point actuator. It converts an analog positioning signal into the binary open/close commands.

Requirements

Development environment	Necessary function
TwinCAT from v3.1.4024.35	TF8040 \| TwinCAT Building Automation from V5.0.0.0