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Fundamentals of Programmable Logic Controllers
Description
Learn how operator interfaces (OIs, or human machine interfaces–HMIs) integrate with a PLC to access information about the machine. You will discover that the HMI is a well designed real-time troubleshooting tool when properly programmed. You’ll spend time in hands-on lab exercises programming the PLC and diagnosing problems. Leave with valuable skills for effective repairs, troubleshooting and maintenance.
This course is a three-day segment within the broader five-day course Fundamentals of Programmable Logic Controllers with PLC Automation Systems. We suggest the five-day course for the most comprehensive training.
Agenda [download course agenda]
PLC Architecture
Input and Output (IO) Systems
- IO interfaces, number per module, remote systems
- Data transfer from module to processor
- Analog data vs. digital data
- Sizing system requirements
Ladder Logic vs. Relay Logic
Relay-Type Instructions
Addressing, Data Memory and Scan Time
- IO address relation to module location
- Internal data memory: binary and integer files
- Register memory vs. bit-wise memory
- IO, memory and rung scan process
Additional Instructions and Associated Bits
- Timer and counters control bits
- Moving data
- Comparison instructions
Hands-on Lab Exercises
- Motor start/stop circuits
- Trapping random faults
- Signaling alarms
- Tank-level controls
- Sequence-controlled conveyors
- Inputting and outputting numerical data
- Batch control processes
- Troubleshooting communication problems