# UTPA STEM/CBI Courses/CAM/PLC Lab 01

Course Title: CAM
Lecture Topic: PLC Programming # 1
Instructor: Kevin Lee
Institution: UTPA/ MANE

## Backwards Design

Course Objectives
* Primary Objectives- By the next class period students will be able to:
** Understand ladder logic and wiring motor for CW and CCW motion.
** Wiring a motor that opens a garage door up and down.
* Sub Objectives- The objectives will require that students be able to:
** Understand PLC structure
** Understand Ladder Logic
** Identify necessary components
** Wiring a motor that can rotate CW and CCW.
* Difficulties- Students may have difficulty:
** Understanding PLC architecture
** Writing a ladder logic
** Wiring a motor
* Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
** Garage door opener
** Radar rotating control
** Solar cell aim to the Sun.
Model of Knowledge
* Concept Map
** How to write a ladder logic
** Identify flow chart
** Identify input
** How a motor works
** Electric wiring
* Content Priorities
** Enduring Understanding
*** How to program a PLC
*** Motor control
** Important to Do and Know
*** Become familiar programming and wiring for a motor control
** Worth Being Familiar with
*** DC Motor
*** Basic wiring skills
Assessment of Learning
* Formative Assessment
** In Class (groups)
*** Completion of PLC program.
*** Test completed PLC program.
** Homework (individual)
*** Examples of control systems use a motor direction control.
*** Write a complete program for garage door open and close system.
* Summative Assessment
** Demonstrate PLC program.

## Legacy Cycle

OBJECTIVE
By the next class period, students will be able to:
* Know how to program a PLC to change a DC motor rotation direction.
* Know wiring a relay and DC motor to PLC
The objectives will require that students be able to:
* Understand PLC structure
* Understand Ladder Logic
* Identify necessary components
* Wiring a motor that can rotate CW and CCW.
THE CHALLENGE
Rotate a solar cell angle to face the sun from morning to night.
Design a system that can face radar dome to an angle at an airplane that is approaching.
GENERATE IDEAS
Combine a direction control with time.
MULTIPLE PERSPECTIVES
Study control a motor with conditional statement
RESEARCH & REVISE
* Start ladder logic with turn on and off motor.
* Keep add more control so you can change rotation direction.
* Can you add automatic stop?
* Do you need emergency stop? If so can you add it?
TEST YOUR METTLE
* How many inputs and outputs were needed?
* Were you able to wire relay?
* What are the considerations for wiring?
* How can you buy parts?
* Google some suppliers who sell automation parts.
GO PUBLIC
* Make multimedia presentation and post to Web.
* Post completed program
* Show examples of application

## Pre-Lesson Quiz

* What is a PLC?
* When do use a PLC?
* How can you change a rotation direction of a motor?
* What is normally open and close in a relay?
* What is driving voltage in a relay?
* Turn on and off a light using a PLC?

## Test Your Mettle Quiz

* Draw ladder logic to change a rotation direction of motor
* Explain race effect
* What is contact
* Explain NO
* Design an AND gate ladder logic
* Design a latched switch

## Knowledge Check

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