Allen-Bradley POINT I/O 1734-VHSC5 Manuale utente

Very High-Speed

Counter Modules

1734-VHSC5 and 1734-VHSC24

User Manual

Important User Information

Solid state equipment has operational characteristics differing from those of

electromechanical equipment. Safety Guidelines for the Application,

Installation and Maintenance of Solid State Controls (Publication SGI-1.1

available from your local Rockwell Automation sales office or online at

http://literature.rockwellautomation.com) describes some important

differences between solid state equipment and hard-wired electromechanical

devices. Because of this difference, and also because of the wide variety of

uses for solid state equipment, all persons responsible for applying this

equipment must satisfy themselves that each intended application of this

equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect

or consequential damages resulting from the use or application of this

equipment.

The examples and diagrams in this manual are included solely for illustrative

purposes. Because of the many variables and requirements associated with any

particular installation, Rockwell Automation, Inc. cannot assume responsibility

or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to

use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without

written permission of Rockwell Automation, Inc., is prohibited.

Throughout this manual, when necessary we use notes to make you aware of

safety considerations.

POINT I/O, POINTBus, and RSLogix 5000 are trademarks of Rockwell Automation.

ControlNet is a trademark of ControlNet International, Ltd. DeviceNet is a trademark of Open DeviceNet Vendor Association, Inc.

WARNING Identifies information about practices or circumstances

that can cause an explosion in a hazardous environment,

which may lead to personal injury or death, property

damage, or economic loss.

IMPORTANT Identifies information that is critical for successful

application and understanding of the product.

ATTENTION Identifies information about practices or circumstances

that can lead to personal injury or death, property

damage, or economic loss. Attentions help you:

•identify a hazard

•avoid a hazard

•recognize the consequence

SHOCK HAZARD

Labels may be located on or inside the equipment (for

example, drive or motor) to alert people that dangerous

voltage may be present.

BURN HAZARD Labels may be located on or inside the equipment (for

example, drive or motor) to alert people that surfaces may

be dangerous temperatures.

1Publication 1734-UM003B-EN-P - August 2005

Summary of Changes

This publication contains new and revised information not in the last

release.

New and Revised Information

See the table for a summary of the major changes in this manual.

Change Bars

We marked with change bars (as shown with this paragraph) the areas

in this manual that differ from previous editions and indicate the

addition of new or revised information.

Chapter Change

Preface Update of list of publications

Indication that for specifications and safety approval information

refer to the installation instructions

2 Addition of Before You Begin section

Addition of attention and warning statements

Appendix A Update on how to configure modules in RSLogix 5000 software

Publication 1734-UM003B-EN-P - August 2005

Summary of Changes 2

Notes:

vPublication 1734-UM003B-EN-P - August 2005

Table of Contents

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

vi Publication 1734-UM003B-EN-P - August 2005

Configuration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Counter Configuration (Configuration Word 1) . . . . . . . 3-5

Filter Selection (Configuration Word 2 . . . . . . . . . . . . . 3-5

Decimal Position (Configuration Word 3) . . . . . . . . . . . 3-6

Word 4 is reserved. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Time Base and Gate Interval (Configuration Words

5 and 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Scalar (Configuration Word 7) . . . . . . . . . . . . . . . . . . . 3-7

Scalar Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Rollover (Configuration Word 8). . . . . . . . . . . . . . . . . . 3-7

Preset (Configuration Word 9) . . . . . . . . . . . . . . . . . . . 3-7

Safe State Values (Configuration Word 10) . . . . . . . . . . 3-8

Communicate Real Time and Nonreal Time Information. . . 3-8

Chapter 4

Configure Your Module

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 4-1

Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Add the Adapter to Your Network . . . . . . . . . . . . . . . . 4-1

Add I/O Modules to Your Network. . . . . . . . . . . . . . . . 4-2

Set Counter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Check I/O Status and View/Edit the EDS File. . . . . . . . . . . 4-6

Chapter 5

Access Instantiated Instances

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 5-1

Use Instantiated Instances . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Chapter 6

Troubleshoot with the Indicators

Use the Indicators for Troubleshooting . . . . . . . . . . . . . . . 6-1

Appendix A

Configure Modules in

RSLogix 5000

What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . A-1

Understand Data, Connection, and Communication Formats A-1

Configure Your Module. . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Use the Help Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Work with the Fault/Program Action Dialog. . . . . . . . . . . . A-4

Work with the Counter Configuration Dialog . . . . . . . . . . . A-6

Work with the Output Configuration Dialog. . . . . . . . . . . A-10

Index

1Publication 1734-UM003B-EN-P - August 2005

Preface

Purpose of This Manual

Read this manual for information about how to install, configure, and

troubleshoot your module.

Who Should Use This

Manual

You must be able to use RSNetWorx software or similar configuration

software to set up and calibrate these modules. You must have the

capability to download and use Electronic Data Sheet files.

We assume you know how to do this in this manual. If you do not,

refer to your software user manuals or online help before attempting

to use these modules.

For This Information See

About the Modules Chapter 1

Install the Modules Chapter 2

Input and Output Data Chapter 3

Configure Your Module Chapter 4

Access Instantiated Instances Chapter 5

Troubleshoot with the Indicators Chapter 6

Publication 1734-UM003B-EN-P - August 2005

Preface 2

Related Products and

Documentation

For specification, safety approval, and other information refer to the

following.

•Publication Number 1734-IN003

5V and 24V Very High-speed Counter Modules

Installation Instructions

For related 1734 products and documentation see the table.

Description Cat. No. Publication

Analog Input Modules

Installation Instructions 1734-IE2C

17340IE2V 1734-IN027

Analog Output Modules

Installation Instructions 1734-OE2C

1734-OE2V 1734-IN002

DeviceNet Communication Interface

Installation Instructions 1734-PDN 1734-IN057

Field Potential Distributor

Installation Instructions 1734-FPD 1734-IN059

POINT I/O 24V dc Expansion Power Supply

Installation Instructions 1734-EP24DC 1734-IN058

POINT I/O Selection Guide 1734 series 1734-SG001

Protected Output Module s

Installation Instructions 1734-OB2E

1734-OB4E

1734-OB8E

1734-IN056

Relay Output Modules

Installation Instructions 1734-OW2

1734-OW4 1734-IN055

Sink Input Modules

Installation Instructions 1734-IB2

1734-IB4

1734-IB8

1734-IN051

Source Output Modules

Installation Instructions 1734-IV2

1734-IV4

1734-IV8

1734-IN052

Wiring Base Assembly

Installation Instructions 1734-TB

1734-TBS 1734-IN511

Wiring Base Assembly

Installation Instructions 1734-TB3

1734-TB3S 1734-IN013

Publication 1734-UM003B-EN-P - August 2005

Preface 3

Definitions

The following define the intended operation of the module.

Term Definition

Lead Breakage Typically requires a shunt resistor (across the load) to detect

3 levels of current/input states -

•Open (Wire Off, Device = ?)

•Off (Wire OK, Device Off)

•On (Wire OK, Device On)

This method does not check the input against a time base,

only that the device wiring (current loop) is intact.

Missing Pulse Typically usesan inputpulsetoresetawatchdogtimer(fixed

or programmable HW). This method does detect Lead

Breakage, since a broken wire will time-out the watchdog.

Zero Frequency Typically uses an input pulse to calculate an input frequency

and verify it is above an error threshold. This method does

detect Lead Breakage, since a broken wire will generate a

0Hz frequency.

Missing Pulse or Zero Frequency will also detect a customer

devicestuckhighorlow,sincethecounterismonitoringfora

change in the input state. Currently, the Counter/Encoder

Modes do not have Zero Frequency Detection - the A and B

inputs are time independent, only looking for input edge

changes to increment/decrement the count value.

The Period/Rate and Continuous Rate modes do have Zero

Frequency Detection, since the Z input is monitored for Zero

Frequency in Firmware (A and B inputs are not used and not

monitored).

The Rate Measurement mode inherently has Zero Frequency

Detection, since no A pulses in any sample period are = 0Hz

(B and Z inputs are not used and not monitored).

Publication 1734-UM003B-EN-P - August 2005

Preface 4

Operational Mode Zero Frequency Detection Input Monitored

Counter No None

Encoder No None

Period/Rate Yes Z Only

Rate Measurement Y A Only

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