FB_BA_PID_Sp

The template is a universal PID controller.

The PID controller is enabled via the input variable bEn.

The setpoint is entered via the AV object Sp.

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

Block diagram

Syntax

FUNCTION_BLOCK FB_BA_PID EXTENDS FB_BA_View
VAR_INPUT
  bEn      : BOOL;
  fX       : REAL;
  bSync    : BOOL;
  fSync    : REAL;
END_VAR
VAR_OUTPUT
  fY       : REAL;
  fMax     : REAL;
  fMin     : REAL;
END_VAR
VAR_INPUT CONSTANT
  Sp       : FB_BA_AV_Op;
  Ctrl     : FB_BA_Loop;
END_VAR

Inputs

Name	Type	Description
bEn	BOOL	General enable of the template
fX	REAL	Actual value
bSync	BOOL	A rising edge at this input triggers synchronization of the loop object to the value of fSync.
fSync	REAL	Synchronization value

Outputs

Name	Type	Description
fY	REAL	Control value output
fMax	REAL	Maximum controller value
fMin	REAL	Minimum controller value

Inputs CONSTANT

Name	Type	Description
Sp	FB_BA_AV_Op	Input of the setpoint
Ctrl	FB_BA_Loop	PID controller

Requirements

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