Rockwell Automation 1734-VHSC24 Very High-Speed Counter Modules User Manual User Manual

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Publication 1734-UM003B-EN-P - August 2005

Table of Contents

Preface

Preface

Purpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . P-1
Related Products and Documentation. . . . . . . . . . . . . . . . . P-1
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-3

Chapter 1

About the Modules

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 1-1
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Counter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Encoder Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Period/Rate Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Operation of Scalar . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Rate Measurement Mode . . . . . . . . . . . . . . . . . . . . . . . 1-7
New Data Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Default Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Operating Mode Features . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Chapter 2

Install the Modules

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 2-1
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Install the Mounting Base Assembly . . . . . . . . . . . . . . . . . . 2-1
Install an I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Install the Removable Terminal Block . . . . . . . . . . . . . . . . 2-4
Remove a Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Wire the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Chapter 3

Input and Output Data

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 3-1
Data Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Detailed Description of Data Table Information . . . . . . . . . 3-2

Stored/Accumulated Channel Data (Input Word 2) . . . . 3-2
Module/Channel Status and Programming Error Codes
(Input Words 3 and 4) . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

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