Siemens Simatic S7-400

Warranty, Liability and Support
Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
Rev. B - final 19.07.2002 4/84
Copyright © Siemens AG Fehler! Unbekannter Name für
Dokument-Eigenschaft. All rights reserved
BID21669756_Zeitschaltuhr_einfach_DOKU_v20_e.doc
Table of Contents
Part A1 : Application Description................................................................................ 7
1 Illustrate the performance of the entire applicationThe Automation
Problem - An Overview..............................................................................
8
2 Automation Solution .................................................................................... 12
2.1 Functionality in the S7-CPU............................................................................ 15
2.1.1 Absolute time switching functions................................................................... 15
2.1.2 Relative time function ..................................................................................... 16
2.1.3 Additional functions......................................................................................... 16
2.2 Controlling and monitoring.............................................................................. 18
2.3 Standard components required ...................................................................... 21
2.3.1 Hardware components.................................................................................... 21
2.3.2 Software components..................................................................................... 21
2.4 Application software components required and their "product features" ........ 23
2.5 Installation with simple setup.......................................................................... 25
3 Basic performance data............................................................................... 26
Part A2 : Function Mechanisms ................................................................................ 27
4 Examples of Function Mechanisms............................................................ 28
4.1 Introduction..................................................................................................... 28
4.2 Overview of the Structure Elements ............................................................... 28
4.3 STEP7 application level.................................................................................. 29
1.1.1 Absolute time switching functions................................................................... 30
4.3.1 One-day time switch ....................................................................................... 31
4.3.2 Seven-day time switch.................................................................................... 32
4.3.3 One-month time switch................................................................................... 33
4.3.4 One-year time switch...................................................................................... 34
4.3.5 Relative time switch........................................................................................ 35
4.3.6 Additional functions......................................................................................... 38
Summer/wintertime changeover ................................................................ 38
Holiday recognition..................................................................................... 40
4.4 HMI System .................................................................................................... 41
4.4.1 Operation at the OP3...................................................................................... 41
1.1.2 Operation at the TP170A................................................................................ 43
Part B: Installation of the Sample Application......................................................... 46
5 Installation of Hardware and Software ....................................................... 47
5.1 Hardware configuration................................................................................... 47
5.2 Software installation........................................................................................ 49
5.2.1 Loading the application software into the S7-CPU ......................................... 49