ESET 225 PLC/Pneumatic Interfacing Agenda

What is the definition of process control?

The process of observing a parameter, comparing it against a desired value, and the action to bring the parameter as close as possible to the desired value.

What are the three terms associated with any process?

The three terms associated with any process are controlled quantities, manipulated quantities, and disturbances.

What is manual control in a process?

In manual control, the operator is able to inspect the indicator visually and manipulate a flow into the process to achieve some desired value or set point of the controlled variable.

What is feedback control in a process?

In feedback control, sensors measure the actual values of the controlled variables. The feedback control hardware automatically compares the set points of the controlled variables and the measured values of the same variables. Based on the difference, the feedback control hardware calculates signals that reflect the needed values of the manipulated variables. Signup and view all the answers

What are the elements of a control system?

The elements of a control system are: 1) Process, which consists of an assembly of equipment and material that relates to some manufacturing sequence. Signup and view all the answers

What is the purpose of ESET 225 PLC/Pneumatic Interfacing Agenda for Week 9?

The purpose of ESET 225 PLC/Pneumatic Interfacing Agenda for Week 9 is to have Lab 5: Find Analog min/max values. Signup and view all the answers

What is the purpose of ESET 225 PLC/Pneumatic Interfacing Agenda for Week 10?

The purpose of ESET 225 PLC/Pneumatic Interfacing Agenda for Week 10 is to have Lab 6: Analog input / output scaling. Signup and view all the answers

What is the purpose of ESET 225 PLC/Pneumatic Interfacing Agenda for Week 11?

The purpose of ESET 225 PLC/Pneumatic Interfacing Agenda for Week 11 is to have Lab 7: Pressure control. Signup and view all the answers

What is the range of output pressure provided by the SMC Pressure Regulator based on the input current?

0 to 130 PSI Signup and view all the answers

What type of signals do the Analog Inputs/Outputs in the Energy System Engineering module convert into integer values?

Current and voltage signals Signup and view all the answers

How many input and output channels are provided by the 1746-NIO4I Analog Combination I/O module?

Two input and two output channels Signup and view all the answers

What type of connections are available for changing the output pressure and measuring the current output pressure in the SMC Pressure Regulator?

Analog Input signal connection for changing output pressure; Analog Output signal connection for measuring current output pressure Signup and view all the answers

What type of power supply is required for the Analog I/O Module in the Process Control Electrical Layout?

24 VDC Signup and view all the answers

What does the 1746-NIO4I Analog Combination I/O module contain in terms of current inputs and outputs?

Two current inputs and two current outputs Signup and view all the answers

What functionality does the AB Analog Input and Output card provide?

Analog Input and Output Signup and view all the answers

What type of signals does the AB Analog Modules handle?

Analog signals Signup and view all the answers

What is the main difference between Instruction List (IL) and Structured Text (ST) programming languages?

Instruction List (IL) is a low-level language similar to assembly language, while Structured Text (ST) is a high-level language similar to Pascal or C. Signup and view all the answers

What is the main advantage of Ladder Diagram (LD) programming?

Ladder Diagram (LD) is the most widely used programming language for PLCs and can be used in combination with other types of programming. Signup and view all the answers

What is the key difference between Instruction List (IL) and Structured Text (ST) in terms of program structure?

In Instruction List (IL), the program is built using low-level instructions similar to assembly language, while in Structured Text (ST), the program is built with expressions using a wide variety of high-level statement types. Signup and view all the answers

What is the primary application area for Function Block Diagram (FBD) programming?

Function Block Diagram (FBD) programming is very common in the process industry. Signup and view all the answers

What is the key advantage of using Ladder Diagram (LD) programming over other PLC programming languages?

The key advantage of Ladder Diagram (LD) programming is that it is the most widely used programming language for PLCs and can be used in combination with other types of programming. Signup and view all the answers

Describe the structure of the Structured Text (ST) programming example provided.

The Structured Text (ST) programming example uses an <code>IF-THEN-ELSIF-ELSE</code> statement to assign different values to the variable <code>N7:0</code> based on the states of input variables <code>I:0/0</code>, <code>I:0/2</code>, <code>I:1/5</code>, and <code>I:1/4</code>, as well as the values of other variables <code>N7:5</code>, <code>N7:6</code>, and <code>N7:2</code>. Signup and view all the answers

What is the main difference between Sequential Function Chart (SFC) and the other programming languages mentioned?

The text does not provide any information about Sequential Function Chart (SFC) programming, so there is not enough information to answer this question. Signup and view all the answers

How does the Instruction List (IL) programming language compare to Ladder Diagram (LD) in terms of user-friendliness?

Instruction List (IL) is described as a low-level language that is not user-friendly, while Ladder Diagram (LD) is the most widely used and original programming language for PLCs. Signup and view all the answers

What is the main purpose of a Function Block Diagram?

A Function Block Diagram expresses the behavior of functions, function blocks, and programs as a set of interconnected graphical blocks, similar to electronic circuit diagrams. It looks at the system in terms of the flow of signals between processing elements. Signup and view all the answers

How do Functions and Function Blocks differ?

Functions are designed to perform common processing tasks like math and trigonometry, and take inputs to produce a result. Function Blocks are equivalent to special purpose integrated circuits, containing both data and an algorithm, and can keep track of the past. Function Blocks are modular and independent. Signup and view all the answers

What is the main purpose of a Sequential Function Chart?

A Sequential Function Chart is based on the GRAFCET standard, with changes needed to convert it from a documentation standard to a set of execution control elements. It can mix any of the other IEC 1131-3 language types, such as using Function Blocks as step actions and Ladder Logic to define transitions. Signup and view all the answers

What are some of the key benefits of implementing the IEC 1131-3 standard?

Key benefits of implementing IEC 1131-3 include reduced waste of human resources, increasing software reusability, and reducing misunderstandings and errors. Signup and view all the answers

How do Function Blocks differ from basic Functions in terms of functionality?

Function Blocks are more advanced than basic Functions, as they can contain both data and an algorithm, and can keep track of past state. This makes Function Blocks more modular and independent compared to simpler Functions. Signup and view all the answers

What is the key difference between the Function Block Diagram and Sequential Function Chart languages defined in IEC 1131-3?

The Function Block Diagram is a graphical language that models the flow of signals between processing elements, while the Sequential Function Chart is a control flow diagram based on the GRAFCET standard that can incorporate elements from other IEC 1131-3 languages. Signup and view all the answers

How does the Sequential Function Chart language differ from traditional ladder logic programming?

The Sequential Function Chart language can mix elements from other IEC 1131-3 languages, such as using Function Blocks as step actions and Ladder Logic to define transitions. This provides more flexibility compared to traditional ladder logic programming. Signup and view all the answers

What is the primary motivation for the development and adoption of the IEC 1131-3 standard for industrial control programming languages?

The primary motivations for IEC 1131-3 include reducing waste of human resources, increasing software reusability, and reducing misunderstandings and errors in industrial control programming. Signup and view all the answers

Explain the purpose of analog outputs in a PLC system.

Analog outputs convert 16-bit integer values placed in the output image to voltage or current signals for the slot that the analog card is in. Signup and view all the answers

Why is it necessary to convert analog signals received by the PLC into a more meaningful format?

The analog signal received by the PLC appears as an integer in PLC units, which is not useful without converting it into units we understand, such as PSI, Bar, or MPa. Signup and view all the answers

What mathematical equation is used for analog signal conversion or scaling?

The linear equation y = mx + b is used for analog signal conversion or scaling. Signup and view all the answers

What PLC instruction is used for analog signal conversion, and what are its key characteristics?

The CPT (compute) instruction is used for analog signal conversion. It takes an equation entered by the user, generates an output based on the input variables, and stores the result in a destination file. The CPT instruction will only generate outputs if all input conditions on the rung are true. Signup and view all the answers

Why is it important to have the CPT instruction continuously enabled in the application?

The CPT instruction needs to be continuously enabled or on at all times because the application requires continuous calculation of the analog signal conversion. Signup and view all the answers

Derive the equation to convert a raw analog signal value of 10,000 PLC units to a pressure reading in PSI, given that the full-scale range of the analog input is 0-20,000 PLC units and 0-100 PSI.

y = (100 / 20000) * 10000 + 0 = 50 PSI Signup and view all the answers

What is the significance of the input conditions being true on the rung where the CPT instruction is placed?

The CPT instruction will only execute and generate an output if all input conditions on the rung are true. Signup and view all the answers

Explain the role of the destination file in the CPT instruction for analog signal conversion.

The destination file is where the result of the analog signal conversion calculation performed by the CPT instruction is stored. Signup and view all the answers