Siemens Module B3 manual Exercise Example

Automation and Drives - SCE

Starting Up the Software PID Controller (S)FB41 "CONT_C" with STEP 7

A SIMATIC S7-300 is programmed as a PID controller with the software STEP 7. This provides the user with a uniform configuring tool for central as well as distributed configurations. Here, only the most essential aspects can be pointed out. (Additional information is provided in the STEP7 reference manuals.)

The PID controller is parameterized with a special application included in STEP7 -Assigning parameters to a PID Control- by resetting values there in an instance DB associated with the (S)FB

41.This is done as follows:

4.3Exercise Example

The user has to perform the steps below in order to configure the hardware as well as to generate an

S7 program with the functionality of a PID controller, and then load it to a PLC:

1.Call the SIMATIC Manager

Click on symbol 'SIMATIC Manager’

2.Set up new project ( → File → New)

Click on 'New'

	Preface Fundamentals	Discontinuous Action Controllerr	Controller Block (S)FB41	Setting the System Appendix
	T I A Training Document	Page 40 of 64		Module
				B3
Issued: 02/2008				Control Engineering with STEP 7