Discrete Control with PLCs and PCs Quiz

Discrete process control refers to control systems that operate on parameters and variables that change at discrete moments in time. Examples of discrete parameters and variables include binary values such as 0 or 1, off or on, open or closed. Examples of sensors and actuators for discrete control include limit switches, photo-detectors, timers, motors, valves, and clutches.

Ladder logic diagrams are graphical representations of the control logic used in programmable logic controllers (PLCs). They are based on the concept of relay logic and are used to design and troubleshoot control systems in discrete manufacturing processes.

Programmable logic controllers (PLCs) are specialized industrial computers used to control manufacturing processes and machinery. They are commonly used in discrete control systems to automate tasks such as sequencing, timing, counting, and logic operations.

<p>Personal computers (PCs) can be utilized in discrete control systems with soft logic by running software that emulates the functionality of a traditional PLC. This allows for flexibility in control system design and can be useful for prototyping and testing control logic.</p> Signup and view all the answers

<p>Examples of sensors used in discrete control systems include limit switches, contact/no contact sensors, and photo-detectors. Actuators commonly used in discrete control systems include motors, valves, and clutches.</p> Signup and view all the answers

<p>Discrete process control operates on parameters and variables that change at discrete moments in time, with parameters and variables typically being binary (0 or 1, off or on, open or closed, etc.). Continuous process control, on the other hand, deals with parameters and variables that change continuously over time.</p> Signup and view all the answers

<p>A limit switch is a sensor used to detect the presence or absence of an object. An example application is in a conveyor system to detect when a product reaches the end of the line, triggering the next phase of the process.</p> Signup and view all the answers

<p>Ladder logic diagrams are graphical representations of the control logic, with contacts and coils used to represent input and output devices. They are easy to understand and are commonly used in discrete control systems.</p> Signup and view all the answers

<p>PCs with soft logic can be used as a flexible and powerful platform for programming and controlling discrete processes, providing advanced functionality and integration with other systems.</p> Signup and view all the answers

<p>PLCs are specialized industrial computers used to control manufacturing processes and machinery. They offer reliability, robustness, and flexibility in programming, making them suitable for discrete control applications.</p> Signup and view all the answers