PLC Sequencer Logic

Course details

Sequence processes are common in manufacturing and used often in ladder logic, the popular language for programming major PLC devices. In this practical course, instructor Zahraa Khalil demonstrates how to use sequencer instructions in PLC ladder logic programming. To help lend each concept a real-world context, Zahraa shares practical examples involving everything from traffic lights to dishwashers. She shines a spotlight on three key sequencer instructions: sequencer output instruction (SQO), sequencer compare instruction (SQC), and sequencer load instruction (SQL). Along the way, she includes challenges that help you solidify your understanding of each concept.

Topics include:
- Sequencer output instruction (SQO)
- Sequencer compare instruction (SQC)
- Developing a truth table
- Uses of the sequencer load instruction (SQL)
- Working with SQO, SQC and SQL parameters

Concepts

Introduction

Getting to know PLC sequencers
What you should know before watching
LogixPro PLC Simulator software

PLC Sequencer Output Instruction (SQO)

Intro to sequencer instructions
Sequencer output instruction (SQO)
SQO parameters, part 1
SQO parameters, part 2
SQO operation example
Example motor and pilot lights
Ladder logic for motor and pilot lights
Motor and pilot lights software demo
Motor and pilot lights challenge
Motor and pilot lights solution

SQO Examples

Example dishwasher sequence
Dishwasher sequence truth table
Dishwasher sequence ladder logic
Dishwasher software demo
Dishwasher SQO challenge
Dishwasher SQO solution
Traffic lights example
Traffic light sequence truth table
Traffic light ladder logic
Traffic light software demo
Traffic light SQO challenge
Traffic light SQO solution

PLC Sequencer Compare Instruction (SQC)

Sequencer compare instruction (SQC)
Instruction SQC parameter
Example - Three-machine products
Three-machine truth table
Three-machine ladder logic
Three-machine software demo
SQC instruction challenge
SQC instruction solution

PLC Sequencer Load Instruction (SQL)

Sequencer load instruction (SQL)
Instruction (SQL) parameter
Illustrate operation of SQL
Example of SQL
SQL ladder logic
SQL demo
SQL instruction challenge
SQL instruction solution

Final Challenge

Final challenge introduction
Car wash process
Car wash truth table
Car wash solution, part 1
Car wash solution, part 2
Sequencer things to consider

Conclusion

Next steps