At the completion of this course, the participants will clearly see the differences between relay logic and ladder logic, and will be able to “talk through" and debug/troubleshoot the PLC’s ladder logic using the Logix5000 software in order to locate a “real,” faulty input or output device, replace it, and get the process back up and running.
The participant will begin their training by wiring the actual input and output (I/O) devices such as photo-electric sensors, inductive proximity and selector switches, pushbuttons, and outputs such as contactors, indicator lamps, etc. to the PLC’s input/output modules.
This course serves as a solid foundation for those planning on taking Rockwell Automation Studio 5000/Control Logix courses.
- Students will be provided a brief overview of relay logic so they will be able to understand the differences between relay logic and ladder logic.
- Ability to identify “real” and “simulated” I/O in order to troubleshoot the ladder logic.
- The concept of “tags” will be fully understood and each student will assign “tags” where appropriate using the Logix5000 software.
- The troubleshooting tools of “toggling” and “forcing” I/O will be thoroughly examined and applied.
- Examples of Timer (TON, TOF, RTO) and Counter (CTU, CTD) circuits will be presented.
- An explanation of “how” and “why” specific instructions such as One-Shot (ONS), First Scan (S:FS), Set Bit if Zero/Negative (S:Z, S:N) are used in a PLC-based system.
- Several examples using Comparison instructions such as EQU, NEQ, GRT, LES, GEQ, LEQ, LIM, etc. will be shown.
- Project examples that use Math instructions, such as, ADD, SUB, MUL, and DIV will be presented in detail.
- Numerous hands-on labs utilizing troubleshooting skills are included in all of the above subject matter in order to reinforce the lecture material.