UTPA STEM/CBI Courses/CAM/PLC Lab 02

Course Title: CAM

Lecture Topic: PLC Programming # 2

Instructor: Kevin Lee

Institution: UTPA/ MANE

Backwards Design

Course Objectives

• Primary Objectives- By the next class period students will be able to:
  • Understand how to use timers in a PLC.

• Sub Objectives- The objectives will require that students be able to:
  • Understand PLC structure
  • Understand Ladder Logic
  • Identify necessary components
  • Wiring LEDs.
  • Understand current limiter

• Difficulties- Students may have difficulty:
  • Understanding PLC architecture
  • Writing a ladder logic
  • Wiring LEDs

• Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
  • Timed on/off control
  • Traffic light control
  • Radar rotating control
  • Solar cell aim to the Sun.

Model of Knowledge

• Concept Map
  • Know how to write a ladder logic?
  • Identify flow chart
  • Identify input
  • Understand how Timers work?
  • Identify different types of timers
  • Know the differences between PLC manufacturers
  • Understand electric wiring

• Content Priorities
  • Enduring Understanding
    • How to program a PLC
    • On/off control using timers
    • LED control using different timers
    • Combining LED and Motor control

• • Important to Do and Know
    • Become familiar programming timers and wiring for LEDs and motor.
  • Worth Being Familiar with
    • Relay
    • DC Motor
    • LED
    • Current limiting circuit
    • Basic wiring skills

Assessment of Learning

• Formative Assessment
  • In Class (groups)
    • Writing simple PLC program that turns on/off LEDs
    • Make circuits of above program
    • Combining motor and LED control
  • Homework (individual)
    • How other manufacturers PLC's timer function works?
    • How many different types of timers exist?
    • Can you program a cascade timer?
    • Understanding time base of timers.
• Summative Assessment
  • Demonstrate PLC programming
  • Demonstrate your own circuit

Legacy Cycle

OBJECTIVE

By the next class period, students will be able to:

• Write on/off control using timer
• Demonstrate how to use various types of timers
• Explain what a current limiter does

The objectives will require that students be able to:

• write PLC program using timers

THE CHALLENGE

Can you control solar cell tracking device to maximize electricity generation?

GENERATE IDEAS

Combining timer and motion control

MULTIPLE PERSPECTIVES

Implementing multiple controls

RESEARCH & REVISE

Can you track the sun with timer?

TEST YOUR METTLE

Was the timer effective in tracking the sun?

GO PUBLIC

Post your PLC program in YouTube

Pre-Lesson Quiz

1. How many types of timers are available for AB Micrologix 1000 PLC?
2. Draw a ladder diagram for timer circuit.
3. Draw a ladder diagram using 2 or more timers.
4. Write examples of control that use a timer.

Test Your Mettle Quiz

1. What is time base?
2. What is maximum time you can have using one timer with AB Micrologix 1000 PLC?
3. How many timers are available?
4. What is/are the difference(s) between TON and TOFF?
5. What is a file system number of timers?

129.113.150.41 21:26, 19 January 2010 (UTC)This lesson seems interesting. I'd like to see the remainer of this challenge.