Topic outline

  • Programmable Logic Controllers

    This page provides an overview of the learning outcomes and a link to the PLC course content and materials.

    All content has been devised in consultation with suppliers and we are happy to receive more feedback. You will notice there are evaluation sheets attached to each course to enable you to do this. 


    This unit of learning is part of the following learning pathways:

    Thanks very much

    The Skillman Team

  • Duration

    Duration

    Hours

     22

    Lessons hours: 22

    Self-study hours:

    Hands-on hours:

    Other (please specify):

    Assessment hours:


    • PLC systems

      The student will be able to demonstrate knowledge of PLC systems, the safety implications and applications of PLC I/O

      Competences

      • Describe the development of PLCs and how they differ from PC-based control systems (real-time vs. non real-time, harsh environments, IO capabilities)
      • Explain commonalities/differences between different systems e.g. Allen-Bradley, Siemens, Schneider-Electric, Hitachi etc.
      • Explain H&S implications of PLC-controlled equipment
      • Demonstrate understanding and use of the different types of inputs/outputs commonly used on PLC-based equipment (inputs including switches, pressure/temperature sensors, analogue signals e.g. 4-20mA, voltage-based signals, digital signalling. Outputs include digital signalling to other equipment (motor driver boards, relays, contactors etc.)

      Knowledge

      • To understand the components of a PLC system To understand how PLCs are used
      • To understand the H&S requirements of a PLC- controlled system
      • To understand different methods of interfacing with a PLC

      Skills

      • To demonstrate PLC usage in a safe manner
      • To demonstrate testing of equipment/components interfacing to a PLC system (sensors, I/O devices)

      • PLC programs

        The student will be able to understand, edit and create PLC programs in Ladder Logic and STL formats

        Competences

        • Identify PLC programming languages – IEC61131-3 (Ladder Logic, FBD, STL, IL, SFC) 2.2 Explain Boolean logic and its relationship to PLC programming
        • Explain the number systems used in digital systems: Binary, Hex
        • Demonstrate the ability to read, develop and debug PLC Ladder Logic programs 2.5 Demonstrate the ability to use PLC programming software

        Knowledge

        • To understand the components of a PLC system To understand how PLCs are used
        • To understand the H&S requirements of a PLC- controlled system
        • To understand different methods of interfacing with a PLC
        • To understand different PLC programming methods and languages
        • To understand different numbering systems To understand basic logic principles

        Skills

        • To demonstrate PLC usage in a safe manner
        • To demonstrate testing of equipment/components interfacing to a PLC system (sensors, I/O devices) To be able to program, test and debug a PLC program
        • To be able to compare and contrast different programming techniques
        • To demonstrate the ability to archive and restore PLC systems

        • PLC communications systems

          The student will be able to set up PLC communications systems, and show knowledge of the security implications.

          Competences

          • Explain communication protocols used in PLC systems (Ethernet, RS-232, RS-485, RS-422)
          • Apply set-up / troubleshoot a communication link with PLC-based equipment
          • Describe the potential security issues with networked PLC systems

          Knowledge

          • Understand the communication protocols used in PLC systems
          • To understand fault-diagnosis techniques in PLC communication systems

          Skills

          • To set up a communications link to a PLC
          • To demonstrate fault-finding techniques

          • Assessment methods

            As specified by the Awarding organization, assessment is by ‘Centre Set Assessment’ which should use a combination of the following methods:

            • Written exercises and tests
            • Oral examination and exercises
            • Practical assignment under supervision
            • Practical assignment autonomously and responsibly

            • Assessment criteria

              Timing as set out in the Assessment Plan. This plan should be established by the centre prior to the commencement of delivery