How PLCs Work and Common Terminology
Five Parts of a PLC
- Input Interfaces
- Processor
- Output Interfaces
- Power Supplies.
- Programming Terminals.
Hardware Considerations
- Field Wiring
- Master Control Relay
- Isolation Transformers
- Grounding
Reading PLC Ladder Logic
- Organization and Function of Ladder
- Logic Ladder Logic Data Table Organization
- Numbering Systems
- Data Table Files
- Bit, Word, and File Addressing
- Introduction to Programming
- Common PLC & PID Instructions
- Basic Relay
- Counters and Timers
- Data Transfer
- Organization
- Subroutine Files
- Selectable Timed Interrupt (STI) Files
- Jumps and MCR Instructions
- Fault Routines
Troubleshooting PLC Systems & Components
- Safety
- Forcing of Input Data Table & Output Devices
- Identifying I/O Field Device and Module Faults
- Using the Data Monitor Screen
- Using the Processor Status and I/O Status Screen
Finding & Fixing the 10 Most Common PLC Problems
- The “Ultimate PLC Troubleshooting Flowchart”
- Using Troubleshooting and Software Tools
PLC System Sequence of Operation
- Input and Output Data Table
- Program Scan
Relay Type Instructions
Addressing
- Hardware (Rack/Slot/Screw)
- Software (File/Word/Bit)
- Addressing Examples
Application of Bit Type I/O Instructions
- LogixPro Garage Door Simulation
- Motor Control Circuit
- Latching Outputs
Troubleshooting Logic
- Copy & Paste Errors
- Incorrect Addressing
- Duplicate Destructive Bits
Converting Hardwired Systems to PLC Control
- Series Circuit vs. AND Statement
- Parallel Circuit vs. OR Statement
- Schematic Exercises
Timer Parameters & Control Bits
- Timer On and Off Delay
- Retentive, Cascading, and Self Resetting Timers
Application of Timer Control Bits
- LogixPro Traffic Light Simulation
Compare Instruction
- EQU, NEQ, LES, GRT, LEQ, GEQ, LIM
Binary Decimal System
Program Control Instructions
- Jump
- Master Control Reset
- Jump to Subroutine
- Forces
- One-Shot
Compute and Transfer Instructions
- Introduction to Source & Destination
- Add, Subtract, Multiply, Divide, SQR, Clear & Trig
- Convert to BCD (TOD) & Compute (CPT)
Counters
- Count Up, Count Down, Reset
Application of Counter Control Bits
- LogixPro Batch Simulation