Brief Description
- Be able to recognise C series hardware and be able to replace modules when a fault occurs.
- Be able to operate the Omron CX Developer software to make it perform certain tasks.
- Understand basic instruction set and be able to make minor modifications to software.
- Be able to backup and restore a PLC program when required.
- Be able to perform basic system diagnostics when a problem occurs.
Course Content
To fault find a system you need to know EXACTLY how it works
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Am I getting the input to the PLC?
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The Led on the output card means i am getting voltage out right? does it?
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What exactly happens in between? theres more than just a program in the CPU
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How exactly does it scan the program?
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What is this Watchdog Timer? Is it that important?
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Can I use the same output twice? That’s bad programming isn’t it?
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A PLC is a logic controller, so use a logical approach to fault find it.
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What are the 8 simple test points to check?
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The PLC is in RUN, that means theres a program right? does it?
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FORCING a bit and toggling a bit is pretty much the same yeah? depends on which PLC
Then you need to know the specifics
- Identify component parts of the C Series PLC system
- I/O addressing and configuration
- Memory organization
- System connection
- Understand and interpret system LEDs
- Modes of operation
- Communicating with the PLC
- Addressing
- Contact and relay-type instructions
- Timer and counter instructions
- Comparison instructions
- Maths instructions
- Force functions
- Search functions
- Save function
- Replacement of battery, I/O modules and CPU
- Fault find simple software problems
- Fault find simple hardware faults
- Interpret cross references & printouts
- Generation of documentation to assist fault finding
Course Documentation
- Reference Guide
Course Equipment (per delegate)
- C Series PLC
- PC or Laptop
- Simulator
Reviews
Plc overview with James
Course: 2225
Fantastic course, really friendly and helpful trainer, I now feel much more confident writing and troubleshooting code.
Overall would definitely recommend the course.
Well explained and efficiently executed in an easy to understand format. Thanks James.
- Michael Alfie Blundell (July 25, 2025)
Fantastic Course
Course: 2225
James was patient and very clear with his teaching style – brought our group up to speed with the basics of PLCS in a week.
- Jamie Power (July 25, 2025)
Allen Bradley EAL Level 3Unit
Course: Schneider M221 EcoStruxture Basic
Excellent course, gained a lot of knowledge. The tutors are great and very helpful would highly recommend
- Sam Yeoman (February 14, 2023)
Excellent Course
Course: Siemens S7 1200/1500, ProfiNet & HMI Level 1
Course covered TIA Portal introduction and programming. Instructor has sound knowledge and experience in the field and is able to pass this on. Highly recommended.
- Sean (October 27, 2021)
Great course
Course: Siemens S7 300/400 PLC & Networks Level 2
Very good and in depth course with lots of information we covered a range of PLCs and programs. Mick made it very simple to understand and answered all questions we had. Very knowledgeable and friendly instructor
- Harry Tredaway (October 1, 2021)
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