Summary: Stored Programming System Exam

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• 1 Stored programming system exam

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• What knowledge and skills are essential for IEC component-related operations according to the document?

  • Understanding of IEC symbols, designations, and numbering.
  • Knowledge of component operation/testing.
  • Ability to read circuit diagrams.
  • Sensor operation and testing knowledge.
  • Skills in equipment use for testing.
  • Reading terminal allocations.
  • Understanding PLC code operation.

• What are the rules for input device placement in a relay logic diagram?

  • Rule 1: Place input devices near the left corner of the rung.
  • Rule 2: Only one input device near the right corner of the rung.
  • Rule 3: Connect in series, parallel, or both.
  • Rule 4: Output devices cannot connect in series.
  • Rule 5: One device per rung in the diagram.
  • Rule 6: Keep input and output devices horizontal.

• What should be included in a checklist for component installation?

  1. Verify components are to design specs.
  2. Check mounting is secure.
  3. Ensure terminations are correct.
  4. Confirm connections are wired.
  5. Check services are correct.
  6. Ensure alignment with design specs.

• What are the components listed under section 3.1 for a stored program system?

  • 3.1.1: ON/OFF detent switch
  • 3.1.2: Start the system ON/OFF
  • 3.1.3: Normally open push button
  • 3.1.4: Normally open push button
  • 3.1.5: Normally closed push button
  • 3.1.6: Stop the automated system
  • 3.1.7: Indicator lamp 220 V
  • 3.1.8: Indicator lamp 48 V

• How is testing and ensuring proper operation highlighted in the document?

  • Use a checklist for design specification adherence.
  • Align services and secure connections.
  • Use markers with discretion to troubleshoot.
  • Test for presence of voltages.

• Describe the flow and numbering requirements for relay logic diagrams.

  • Flow in relay diagrams is from left to right.
  • Number and label rungs for clarity.
  • Include control and interlocking modules between input/output devices.

• What is required in a graphical PLC application software source code?

  • Represent with pictures.
  • Written PLC application software must use structured text or words.

• Explain the functionalities outlined in section 3.2 related to stored program systems.

  • 3.2.1: Terminal list
  • 3.2.2: Connection list
  • 3.2.3: Working circuit
  • Identify components that may appear in the PLC source or program.

• What components are preprogrammed or programmed by user application in controllers?

  • Preprogrammed: Embedded controllers by the manufacturer.
  • User programmed: Software within controllers via user application.

• Outline the logic gates mentioned for stored programme systems L3.

  • AND gate switching logic.
  • OR gate switching logic.
  • Latching circuit logic.