Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Uživatelský manuál stáhnout pdf (Strana 11)

1 Publication 1794-6.5.11 - September 2011

Chapter

Overview of the Frequency Input Module

Overview

This chapter provides a description of the application and capabilities of the

1794 FLEX I/O Frequency Input module. It also explains the general

algorithm for calculating frequency.

The FLEX System

FLEX I/O is a small, modular I/O system for distributed applications that

performs all of the functions of rack-based I/O. The FLEX system contains

the following components shown below:

• Adapter – transfers read and write configuration data to and from the

I/O module

• terminal base – contains a terminal strip to terminate wiring for two- or

three-wire devices

Topic Page

The FLEX System 1

Type of Modules 2

Usage of the Frequency Input Module 2

The FLEX I/O Module in a Logix Control System 3

Typical Applications 5

Input Capabilities 6

Output Capabilities 7

How Frequency Is Calculated 8

Chapter Summary 12

I/O moduleTerminal base

1794-IRT8

Adapter

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Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Uživatelský manuál Strana 11