Siemens Module B3 manual Function Diagram of the control system with a PID controller

		Automation and Drives - SCE
Assignment List:
Symbol:	Address:	Comment
AI_w	PEW 128	Analog input setpoint generator 0…10V
AI_X	PEW 130	Analog input sensor actual value 0…10V
AO_Y	PAW 128	Analog output manipulated variable 0 … 10V
M_w	MD40	Internal setpoint (floating point number normalized)

Function Diagram of the control system with a PID controller

	Controller		ControlledRegelstreckeSystem
		Controller Output y
	Regler	Stellgröße y
				Final Control
				Stellglied
				Element
Generation
	Bildung
	of
	der			Process
				Prozess

ControlRegelfunktionFunction

SystemRegeldifferenzDeviationee==ww-x-x

Setp./Actual Value

Soll-Istwert-

ComparisonVergleichContrRegelgröße. Variablexx

Setpoint Generator

Sollwertgeber

Setpoint Int

Sollwert Int

MeasurinMessgeberSensor

Transducer

Messumformer

	Preface Fundamentals	Discontinuous Action Controllerr	Controller Block (S)FB41	Setting the System Appendix
	T I A Training Document	Page 38 of 64		Module
				B3
Issued: 02/2008				Control Engineering with STEP 7