1
Table of Contents
Introduction ..............................................................................2
PLCs .........................................................................................4
Number Systems
......................................................................8
Terminology ............................................................................ 12
Basic Requirements
................................................................18
S7-200 Micro PLCs
.................................................................20
Programming a PLC
................................................................33
Discrete Inputs/Outputs
.........................................................41
Analog Inputs and Outputs
.....................................................48
Timers .....................................................................................51
Counters .................................................................................58
High-Speed Instructions
.........................................................61
Specialized Expansion Modules
.............................................65
Review Answers
.....................................................................72
Final Exam
.............................................................................. 74