PLC programming Flashcards
What is a registered trade mark of the Department for Education?
T-LEVELS
T-LEVELS refers to a specific qualification in the UK education system.
What is a registered trade mark of the Institute for Apprenticeships and Technical Education?
T Level
T Level is a qualification designed to prepare students for skilled employment.
What is the main focus of the PowerPoint presentation titled ‘Operation of PLCs’?
The operation, function and applications of programmable logic controllers (PLCs) in mechatronic systems.
By the end of the session, what should learners be able to describe regarding PLCs?
The operation of programmable logic controllers (PLCs), including sensor signal conditioning and programming.
What is the purpose of sensor signal conditioning?
To modify or condition analogue signals from sensors before being transmitted to a PLC.
What is the simplest form of signal conditioning?
Converting a continuous analogue signal into a discrete digital signal (analogue to digital conversion).
List other types of signal conditioning methods.
- Filtering
- Amplification
- Attenuation
What must PLCs be programmed using?
Software to perform the different functions required of them.
What is the most common method used for programming PLCs?
Ladder logic.
What are some alternative programming methods for PLCs?
- Sequential function charts
- Function block diagrams
- Structured text
- Instruction lists
What is ladder logic?
A programming language that uses a graphical diagram to represent a program based on circuit diagrams of relay logic hardware.
What is the primary application area for ladder logic?
Industrial control applications.
What are the advantages of ladder logic?
- Simple to use
- Easy to understand and find errors
What is a limitation of ladder logic?
Can lack flexibility when more complex programs are required.
