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E116T
Introduction to Programmable Logic Controllers - Part I (Timed & Monitored)

Chong Chen, Ph.D. PE

A Programmable Logic Controller (PLC) is a device that is capable of being programmed to perform control functions. The first PLC was introduced in the late 1960s to replace relay logic controls in the automotive industry. Compared to relay logic controls, the PLC's advantages include easy programming and installation, high control speed, hardware and software security, network compatibility, troubleshooting and testing convenience, and high reliability.

PLCs are currently used widely in industrial and commercial environments. They can be found in almost any manufacturing facility. There are several manufacturers of PLCs. While the instruction formats may not be the same for different brands, the hardware structures and programming concepts are very similar. This course is the first one of the two PLC courses. It covers PLC hardware structure, input/output modules, software, and programming. PLC operation and ladder logic programs are discussed in this course. Comparison Instructions, Math Instructions, and control instructions are covered in the following course.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.


User's Guide to Timed & Monitored Online Courses:

For Timed & Monitored (T&M) online courses, you need to log into your account to view the course content. You must complete the required study time (min. 50 minutes for each PDH) before you can submit your quiz answers and obtain your certificate of completion. However, you may print out the quiz questions anytime after purchase.

You do not need to complete the T&M course in one sitting. You may view the course content from office or home using different devices with Internet connection. Our website will keep track of your total time spent. If necessary, you may print the course content for ease of reading while you are online. You may also preview the content of E116T by viewing the content of E116 since they are identical.

For T&M courses, You need to actively view course content online - at least click your mouse once in a while. The on-screen tracking clock may stop due to inactivity at your end. If that happens, you may resume your clock by pressing F5 key on your keyboard or by refreshing your screen. Thank you for your cooperation.

Note: This course requires users to pay first before viewing the course content.

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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.

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