A LOGO PLC is simply ingenious for small automation tasks
Simple installation, minimum wiring, user-friendly programming: You can easily implement small automation projects with LOGO!, the intelligent logic module from Siemens. The LOGO! Logic Module saves space in the control cabinet and lets you easily implement functions, such as time-delay switches, time relays, counters, and auxiliary relays.
A little about my Logo programming title:
Programmable control has transformed manufacturing. Nowadays, there is a huge need for trained personnel who can program and integrate industrial controllers and devices.
The purpose of this book is to teach you how to set up, program, and use a SIEMENS SIMATIC LOGO PLC. It will tell you how to write circuit programs using ladder logic or function block diagrams.
In this text, each chapter begins with a generic approach to the topic. Each topic is clearly explained through the use of common, easy to understand, generic examples. Examples are then provided for specific usage of that set of newly introduced instructions.
In the field of programming, I always tend to compare a PLC programmer to a carpenter. A carpenter needs to have the skill to use his tools to properly build a house, just as a PLC circuit programmer needs to master his programming skills to properly develop a complicated and bug-free circuit program.
Chapter 1 provides basic information about field devices and relays logic based circuits and terms used in the industry. The devices introduced include contactors, relays, START and STOP pushbuttons, a bimetallic overload relay.
Chapter 2 focuses on sensors and their application. Application and circuitry of a few major sensors such as inductive proximity sensors, analog sensors, inductive analog sensors, etc. are discussed briefly.
Chapter 3 focuses on the history of PLCs, the advantage of using a PLC as a controller, classifications of PLCs by application ranges, etc.
Chapter 4 focuses on the hardware end of different models of a LOGO PLC. Topics include different sections of a LOGO PLC, expansion modules, memory cards, communications cable. Different models, analog and digital I/O modules, etc. are discussed briefly.
Chapter 5 covers the introduction to LogoSoft Comfort software V7.0. Methods used to create circuit programs, how to work with LogoSoft, constants, connectors, special functions, and creating a new circuit program, etc. are discussed briefly.
Chapter 6 covers topics such as LogoSoft’s programming instructions in further detail with many application examples. Included are thirteen programming exercises with worked-out solutions to help strengthen the reader’s programming skills.
Chapter 7 is devoted to 24 major programming exercises, all with solutions to help the reader to master his PLC programming knowledge.
For the purposes of illustrating and practicing how the software works, I have selected LogoSoft Comfort V7.0 software created by SIEMENS © for programming the SIMATIC LOGO family of PLCs. This software is based on the Microsoft Windows platform and is very user friendly when emulating debug programs both on and offline, ensuring the learning process is both interesting and engaging.