The third edition of Fundamentals of Programmable Logic Controllers, Sensors, and Communications retains the previous editions' practical approach, easy-to-read writing style, and coverage of various types of industrial controllers while reflecting leading-edge technology. Since the programmable logic controller has become an invaluable tool in American industry, it responds to the substantial need for trained personnel who can program and integrate these devices. LogixPro programming and simulation softwate is inclued so that the reader can write and simulate PLC programs.