Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Manual de usuario Pagina 11

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1 Publication 1794-6.5.11 - September 2011
Chapter
1
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
2
+
2
+
45568
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