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Programmable Logic Controllers, 6th Edition by William Bolton

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Chapter 13

Designing Systems

Abstract

This chapter considers how programs are designed, safe systems developed, and how they and the PLC system can be tested and faults found.

Keywords

program development

safety

testing

This chapter considers the way programs are designed and how they and a PLC system can be tested and faults found. This involves consideration of both the hardware and the software.

13.1 Program Development

Whatever the language in which a program is to be written, a systematic approach to the problem can improve the chance of high-quality programs being generated in as short a time as possible. A systematic design technique is likely to involve the following steps:

1 A definition of what is required, with the inputs and ...

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