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Programmable Logic Controllers
A text covering fundamental programmable logic controller (PLC) programming and interfacing methods. Included is a collection of sample ladder logic program segments to perform specific tasks in any PLC program such as flashers, non-standard clocks, timed counters and sequencers, flip flops (RS, D, T, JK), majority decision networks, and one-shots. Topics then move into interfacing methods, discrete sensors, linear transducers, encoders, motor controllers, PID, system safety, and pneumatics. The text can be used in any community college or university-level Engineering Technology PLC course and is also an excellent addition to an engineer's or technician's technical reference library. Readers should have a thorough understanding of fundamental dc and ac circuits, electronic devices (including thyristors), and a knowledge of college algebra and trigonometry.
Programmable Logic Controllers
"Programmable Logic Controllers" provides the student with a general working knowledge of the various PLC brands and models. Programming concepts applicable to virtually all controllers are discussed, and practical programming problems are presented throughout the text. A basic understanding of AC/DC circuits, electronic devices (including thyristors), basic logic gates, flip-flops, Boolean algebra, and college algebra and trigonometry is a prerequisite. The PLC simulation CD that accompanies the text provides hands-on programming experience.
QST.
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Reflections of a Warrior
Reflections of a Warrior is a Medal of Honor winner's true story—a Green Beret's six deadly years in the killing fields of Vietnam. PFC Franklin Miller arrived in Vietnam in March 1966, and saw his first combat in a Reconnaissance Platoon. So began an odyssey that would make him into one of the most feared and respected men in the Special Forces elite, who made their own rules in the chaos of war. In the exclusive world of the Military Assistance Command, Vietnam, Studies and Observation Group, Miller ran missions deep into enemy territory to gather intelligence, snatch prisoners, and to kill. Leading small bands of battle-hardened Montagnard and Meo tribesmen, he was fierce and fearless—fighting army policy to stay in combat for six tours. On a top-secret mission in 1970, Miller and a handful of men, all critically injured, held off the NVA in an incredible Alamo-like stand—for which he was awarded the Congressional Medal of Honor. When his time in Southeast Asia ended, he had also received the Silver Star, two Bronze Stars, an Air Medal, and six Purple Hearts. This is his incredible story.
