This book is oriented to the people that work on and troubleshoot PLCs on the factory floor. It is directed at the actual problems and conditions that will be encountered within a realistic setting. The text is designed to present a clear, concise picture of how PLCs operate to the person that wishes to learn more about them.Working with Instructions
We cover every available instruction necessary for beginners, what each instruction does along with a short example for each. You will also learn about communication settings and how to add additional devices to your control system.
Working with Tags, Routines and Faults
We show you how to create and use the various types of tags available, along with all of the different data types that are associated with tags. This guide also covers the finer details of routines, UDTs and AOIs. As well as providing guidance on how to account for typical problems and recover from faults. All of which are essential to most programs.
A Real-World Practical Approach
Throughout the entire guide, we reference practical scenarios where the various aspects we discuss are applied in the real world. We made sure to include numerous examples, as well as two full practical examples, which brings together everything you will have learned in the preceding chapters.
Contents
1 CONTROL TASK DEFINITION
2 CONTROL STRATEGY
3 IMPLEMENTATION GUIDELINES
4 PROGRAM ORGANIZATION AND IMPLEMENTATION
CREATING FLOWCHARTS AND OUTPUT SEQUENCES
CONFIGURING THE PLC SYSTEM
REAL AND INTERNAL I/O ASSIGNMENT
REGISTER ADDRESS ASSIGNMENT
ELEMENTS TO LEAVE HARDWIRED
SPECIAL INPUTDEVICE PROGRAMMING
PROGRAM CODING/TRANSLATION
5 DISCRETE I/O CONTROL PROGRAMMING
CONTROL PROGRAMMING AND PLC DESCRIPTIONS
SIMPLE RELAY REPLACEMENT
SIMPLE START/STOP MOTOR CIRCUIT
FORWARD/REVERSEMOTOR INTERLOCKING
REDUCED-VOLTAGE-START MOTOR CONTROL
AC MOTOR DRIVE INTERFACE
CONTINUOUS BOTTLE-FILLING CONTROL
LARGE RELAY SYSTEM MODERNIZATION
STUDY GUIDE
REVIEW QUESTIONS
ANSWERS
