Programmable Logic Controllers Basics
HMI
PLC's directly interact with their operators through?
Modules
a PLC system consists of a power supply, proccessor, and various?
I/O Modules
A PLC interacts with the outside world through its?
It is ruggedized
How does a PLC differ from an ordinary general-purpose computer?
Throught its processor
How does a PLC use its inputs to control its ouputs?
Optocouplers
PLC inputs are often protected from hostile volatges by?
Power supply, processor, I/O modules, and communications modules.
What are the primary hardware components of a PLC?
Micro PLC
What can be programmed via univeral serial bus cable (USB) from a standard computer?
Input/Output (I/O)
What can handle motion control, drive control, and specialize process control?
Software
What controls the hardware, providing the intelligence and decision making that ultimately controls industrial processes?
Micro PLC
What includes a small number of I/O connections, both digital and analog?
Hardware
What includes all the physical components that make up the PLC system?
PLCs
What is a microprocessor based device?
Micro PLC
What is designed for small-scale control?
Input/Output (I/O)
What is programmed using intuitive tools running on a notebook computer or other portable electronic device?
Architecture
What is the term used to refer to how an entire PLC system is put together?
Hardwired system
What system controls outputs directly with its inputs?
Micro PLC
What type of PLC are common in situations where some intelligence is required but a large amount of I/O is not?
Medium-scale PLC
What type of PLC can run fairly large programs and connects to other devices using several of the most common industrial networking systems?
Large-scale PLC
What type of PLC has enourmous expansion capability, handling tens of thousands of I/O connections?
Large-scale PLC
What type of PLC has large memory and can run sophisticated control programs?
Medium-scale PLC
What type of PLC is extremely useful and offer enough expansion capability to grow with many typical applications?
Medium-scale PLC
What type of PLC is rack mounted and can be expanded with up to several thousand I/O connections of various types?
Human-Machine Interface (HMI)
What type of device allows a human to control and monitor the status of a computer or PLC?
Optocouplers
What type of device is used to separate inputs from the processor and protects the processor from voltages up to a several hundred or even several thousand volts?
Number of I/O connections
The biggest difference between a Large-scale PLC and a Micro PLC is the?