Data manipulation instructions: Data manipulation instructions enable the numerical data that exists in the controller’s memory to be performed within the control program. Data manipulation instructions allows manipulation of data that is stored in either single or multiple words groups. It also includes the transfer of data from one data memory area of the Programmable Logic Controller (PLC) to another. In order to accomplish data manipulation, there are mainly two different kinds of instructions. Instructions which operate on word data. Instructions which operate on file or block. It also provides great flexibility to program control circuits. File: A file refers to a group of words contained in the data table. It must have a definite start and end positions. It is used for storing information. File Arithmetic and Logic (FAL) instruction: The FAL instruction is used to copy the contents of one file from location to another. It performs file arithmetic and logic operations on the contents of each file. There are mainly six parameters and addresses which must be entered into the FAL instruction. They are as follows: Control Length Position Mode Destination Expression

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Chapter 10, Problem 9RQ

Program Plan Intro

Data manipulation instructions:

Data manipulation instructions enable the numerical data that exists in the controller’s memory to be performed within the control program.

Data manipulation instructions allows manipulation of data that is stored in either single or multiple words groups.

It also includes the transfer of data from one data memory area of the Programmable Logic Controller (PLC) to another.

In order to accomplish data manipulation, there are mainly two different kinds of instructions.

Instructions which operate on word data.

Instructions which operate on file or block.

It also provides great flexibility to program control circuits.

File:

A file refers to a group of words contained in the data table.

It must have a definite start and end positions.

It is used for storing information.

File Arithmetic and Logic (FAL) instruction:

The FAL instruction is used to copy the contents of one file from location to another.

It performs file arithmetic and logic operations on the contents of each file.

There are mainly six parameters and addresses which must be entered into the FAL instruction. They are as follows:

Control

Length

Position

Mode

Destination

Expression

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