Rockwell Automation 1734-VHSC24 User Manual

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Very High-Speed Counter Modules

1734-VHSC5 and 1734-VHSC24

User Manual

Important User Information

SHOCK HAZARD

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.

WARNING

IMPORTANT

ATTENTION

BURN HAZARD

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.

Identifies information that is critical for successful application and understanding of the product.

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

Labels may be located on or inside the equipment (for example, drive or motor) to alert people that dangerous voltage may be present.

Labels may be located on or inside the equipment (for example, drive or motor) to alert people that surfaces may be dangerous temperatures.

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.

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.

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

Change Bars

W e 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.

1 Publication 1734-UM003B-E N-P - August 2005

Summary of Changes 2

Notes:

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Preface

About the Modules

Install the Modules

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

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

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

Input and Output Data

Chapter 3

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

v Publicat ion 1734-UM003B-EN-P - Augus t 200 5

Configure Your Module

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

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

Access Instantiated Instances

Troubleshoot with the Indicators

Configure Modules in RSLogix 5000

Index

Chapter 5

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

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

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

Chapter 6

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

Appendix A

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

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Preface

Purpose of This Manual

Who Should Use This Manual

Read this manual for information about how to install, configure, and troubleshoot your module.

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

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.

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Preface 2

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 uses an input pulse to reset a watc hdog timer (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 device stuck high or low, since the counter is monitoring for a 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).

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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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About the Modules

Chapter

What This Chapter Contains

Module Description and Features

Read this chapter to learn about types, features, and capabilities of the encoder/counter modules.

The modules install into the POINT I/O terminal base (1734-TB or 1734-TBS) and interface with the Point I/O DeviceNet Pass-through (1734-PDN) or the Point I/O DeviceNet Adapter (1734-ADN).

A module serves as a signal conditioner, function block, and counter between the customer process signals on the terminal base and the POINTBus containing the command information. The main functional blocks are the following.

• Customer digital I/O interface

• Counter ASIC

• Microprocessor

The module accepts feedback from the following.

• Encoders (either single ended or differential)

• Pulse generators

• Mechanical limit switches

• Frequencies up to 1 MHz

A filter is available with the following settings.

• 50 Hz

• 500 Hz

• 5 kHz

• 50 kHz)

Turn the filter off to achieve the fastest counting rate. The input voltage range is 5Vdc (VHSC5) or 15-24V dc (VHSC24). The module returns the count or frequenc y in the form of a 24 bit binary number (0 - 16,777,215) expressed in a 32 bit long word.

Each counter has a user-selectable preset and rollover value associated with it.

The module has 2 outputs that access customer power from the POINTBus to facilitate various output device voltage requirements.

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1-2 About the Modules

The outputs are rated to source 0.5A at 10 to 28.8V dc. The output may be tied to an input. This lets you cascade counters of multiple 1734-VHSC modules. The counter has 4 user- selectable On-Off values (windows) associated with it. Tie either output to any or all of the window signals.

Operating Modes

The modules operate in the modes shown in the table.

Mode Description

Counter Mode Read read incoming single-phase pulses, return a

binary count.

Encoder Mode Read incoming two-phase quadrature pulses, return

a binary count.

Period/Rate Mode Count internal clocks during the On period, return a

frequency. Outputs updated only at the end of the period.

Continuous/Rate Mode Count internal clocks during the On period, return a

frequency. Outputs are updated con tinuous ly during the period.

Rate Measurement Mode Read pulses during the sample period, return a

frequency.

PWM Mode (pulse width modulation)

Generate a pulse width modulated signal.

The operation of the counter and encoder modes is nearly identical. The difference between the two modes is in the type of feedback (single-phase versus two-phase) for the count direction (up or down). In encoder mode, a transition is expected on the B input for counting to proceed in a direction; whereas, in counter mode, the B input may be left at a static level.

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You select all operating modes by writing appropriate configuration data to the module.

Counter Mode

The counter mode reads incoming pulses and returns a binary number (0 - 16,777,215

accepts single-phase inputs. The module determines the Phase B input state, and counts up or down accordingly.

) to the POINTBus. The counter mode only

max

About the Modules 1-3

Channel A input is used as the counting pu lse while channel B is used to determine the direction.

[B = High, Count = Down; B = Low or floating (not connected), Count = Up]

The Channel B input may be tied high or low for unidirectional counting, or toggled for bidirectional counting.

EXAMPLE

Example of Counter Mode

ingle Phase Pulse Generator

Count Up Count Down

Input

ount

123

A Input B Direction Z (Store Count)

(Gate / Reset )

210

Input A Input B Input Z

1734-VHSC

Outputs Updated Continuously

Encoder Modes

The encoder mode reads incoming pulses and returns a binary number (0 - 16,777,215

only accepts two-phase quadrature inputs. The module senses the relationship between the 2 phases, and counts up or down accordingly.

) to the POINTBus. The encoder mode

max

There are two basic encoder types, absolute and incremental. A single-output incremental encoder is called a tachometer encoder. A dual channel incremental encoder with one channel leading the other by 90° is called a quadrature encoder.

A system using a quadrature encoder may include an optional zero pulse, or index, serving as a reference mark for system reset. The principal disadvantage of a system using incremental en coders is that a power interruption causes the loss of position reference, so a system must be reinitialized or returned to a known zero position.

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1-4 About the Modules

Absolute encoders typically have higher speed requirements (200 KHz typical) for motion control applications. An absolute encoder has a unique code associated with each position, so the exact position is always known, even if the system power is turned off.

EXAMPLE

Example of Multiplying Encoder Mode X1, X2 and X4

Input A Input B

Z (Store Count)

Input Z

Quadrature Encoder

(Gate / Reset )

1734-VHSC

Forward Rotation Reverse Rotation

Input

123

210

1 Count

Count

4 Count

135246

1352467 10981211

531420

11 9 710 8 6 5 23401

Outputs Updated Continuously

X1 Multiplying Encoder Mode

Quadrature input signals are used to count on the leading (up direction) or trailing (down direction) edge of A for a bidirectional count, and channel B is used to determine the direction.

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[ B = leads A, Count = Down; B = follows A, Count = Up ]

X2 Multiplying Encoder Mode

Quadrature input signals are used to count on leading and trailing edges of A for a bidirectional count, and channel B is used to determine the direction.

[ B = leads A, Count = Down; B = follows A, Count = Up ]

About the Modules 1-5

A F F

X4 Multiplying Encoder Mode

Quadrature input signals are used to count on leading and trailing edges of A and B for a bidirectional count, and channel B is used to determine the direction.

[ B = leads A, Count = Down; B = follows A, Count = Up ]

Period/Rate Mode

The Period/Rate mode returns an incoming frequency and a total accumulated count to the POINTBus, by gating an internal 5 MHz internal clock with an external signal.

This mode determines the frequency and total number of input pulses by counting the number of internal 5MHz clock pulses over a user-specified number of input signal pulses. At the end of the specified number of pulses, the module returns the frequency (0 - 1 MHz). When the frequency is updated, both outputs are checked against their associated presets.

EXAMPLE

Example of Period/Rate Mode

A ( Not Used ) B ( Not Used ) Z

Encoder / Pulse Generator

Z Input ( Pulse )

5 MHz Internal

Sampling Clock

Accumulated Count

ssumes symmetrical pulse, 50% duty cycle, so Period = Sample Time On X 2 {On & Off} requency = 1 / Period If Count = 20, Scalar = 1, and Clock Period = ( 1 / 5 MHz ) requency = 1 / [ ( 20 / 1 ) X ( 1 / 5 MHz ) X 2 ] = 125 kHz

(Gate / Reset )

10 20

Input A Input B Input Z Scalar

5 MHz Clk

1734-VHSC

Frequency & Outputs Updated Here

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1-6 About the Modules

As the frequency of the incoming pulse train at the Z (Gate/Reset) terminal increases, the number of sampled pulses from the 5MHz clock decreases. Since accuracy is related to the number of pulses received over the sample period, the accuracy decreases with increasing frequencies at the Gate/Reset terminal. Refer to the following Scaling table.

Relationship Between Sampled Pulses and Input Frequency

Input Frequency at Z Gate/Reset Terminal Sample Pulses for 1/2 Cycle of Z Gate/Reset Pulse

2.5 Hz 1 M 5 Hz 500 k 10 Hz 250 k 20 Hz 125 k 50 Hz 50 k 100 Hz 25 k 200 Hz 12.5 500 Hz 5 k 1k Hz 2.5 k 2 Hz 1.25 k 5 kHz 500 10 kHz 250 20 kHz 125 50 kHz 50 100 kHz 25

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Scaling the input frequency through the use of a scalar can lessen the decrease in accuracy. A scalar value of 1 returns an accurate input frequency if incoming input pulses have a 50% duty cycle.

Operation of Scalar

In the Period/Rate mode, the scalar lets the incoming pulse train at the Z Gate/Reset pin be divided by a user-defined number. There is one scalar value for each counter. Acceptable values for the scalar are 1, 2, 4, 8, 16, 32, 64, and 128. The default value for each scalar is 1. Note that a 0 scalar is equivalent to a 1.

The product of the Sample Period times the scalar should be less than

6.71 seconds in order to avoid a zero frequency detect indication.

(5 MHz sample time = 200ns; 16,777,216 counts x 200ns x 2 half cycles of Z = 6.71 seconds)

About the Modules 1-7

Z 5

Continuous/Rate Mode

The Continuous/Rate Mode returns an incoming frequency and a total accumulated count to POINTBus, by gating an inte rnal 5 MHz internal clock with an external signal.

Similar to the Period/Rate mode except outputs in this mode are updated continuously. This mode determines the frequency and total number of input pulses by counting the number of internal 5 MHz clock pulses over a user-specified number of input signal pulses. Each output is turned on as soon as the turn-on count is reached, and turned off as soon as the turn-off count is reached. As the internal 5 MHz clock is counted, the outputs dynamically track the 5 MHz count.

EXAMPLE

Example of Continuous/Rate Mode

A ( Not Used ) B ( Not Used ) Z

ncoder / Pulse Generator

Input ( Pulse ) MHz Internal

ampling Clock

ccumulated Count

Assumes symmetrical pulse, 50% duty cycle, so Period = Sample Time On X 2 {On & Off}

Frequency = 1 / Period If Count = 20, Scalar = 1, and Clock Period = ( 1 / 5 MHz ) Frequency = 1 / [ ( 20 / 1 ) X ( 1 / 5 MHz ) X 2 ] = 125 kHz

(Gate / Reset )

10 20

Input A Input B Input Z Scalar

5 MHz Clk

1734-VHSC

Frequency Updated Here

Outputs Updated Continuously

As the frequency of the incoming pulse train at the Z Gate/Reset terminal increases, the number of sampled pulses from the 5 MHz clock decreases. Since accuracy is related to the number of pulses received over the sample period, the accuracy decreases with increasing frequencies at the Gate/Reset terminal. (Refer to the “Operation of Scalar” information and table in the Period/Rate Mode.)

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1-8 About the Modules

Rate Measurement Mode

The Rate Measurement mode determines the frequency and total number of input pulses over a user-specified sample period. At the end of the interval, the module returns a value representing the sampled number of pulses and a value indicating the incoming frequency.

When you update the count and frequency, you check any associated outputs against their associated presets. Frequency is calculated by dividing the accumulated count by the user-selected time period, and is returned in the read data. Allowable time periods are 10 ms to 3 s in 10 ms increments, with a default value of 1 s. Note that a 0 time period is equivalent to the 1 s default.

EXAMPLE

Example of Rate Measurement Mode

A Input B ( Not Used ) Z ( Not Used )

(Gate / Reset )

Encoder/Pulse Generator

A Input ( Pulse )

Internal Sampling Gate Accumulated Count

User Selectable Sample Period,

10ms to 2s in 10ms increments.

If Sample Period is 50ms, and Count = 3, then Frequency = 3 /50ms = 60Hz

Input A Input B Input Z

Time Base

1734-VHSC

Frequency Calculated, Outputs Updated Here

Pulse Width Modulation (PWM) Mode

The Pulse Width Modulation mode uses the counter to generate a continuous rolling sequence of numbers. The real-time PWM value written to the module is converted to a window edge so that a variable duty-cycle signal can be generated. The counter resets to zero based upon the PWM period programmed into the module. Any output tied to Window 0 transmi t s the PWM signal.

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About the Modules 1-9

New Data Indicator

A two-bit counter, C1 and C0, is updated every time an event occurs, indicating that new data is available in the Stored/Accumulate d Count words. Events are defined as:

Any active gate transition in any of the Store Count (Counter or Encoder) modes

The end of the gate sample period in either the Period / Rate, Continuous / Rate or PWM modes

The end of the programmed sample period in the Rate Measurement mode

To use these bits reliab ly, acquisition of data fro m the counter module must occur faster than the events, which cause C1/C0 to increment. When C1/C0 is updated, a change of state (COS) message can be sent.

Default Configuration

The module default configuration on startup are the following.

• Counter mode

• 50 Hz filter on A, B, and Z

• No time base

• Active Output Assembly = 105

• Rollover = 0x00FFFFFF

• Preset = 0

• No scalar

• Output 0 untied

• Output 1 untied

• Window comparators = 0

• Counter Control Safe State = 0

• Output Control Safe State = 0

To modify the default settings to those required for your application, refer to the appropriate section of this publication.

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1-10 About the Modules

R a

Operating Mode Features

Operating Feature Counter

Preset Y Y N N N N Rollover Y Y N N N N Software Reset Y Y Y Y Y Y Store Count -

Z Gate / Reset 4 modes

Scale Input Count at Z Gate / Reset

Z Gate / Reset Invert Bit Y Y Y Y N N Enable /Force Outputs Y Y Y Y Y Y Assign Outputs Y Y Y Y Y Y Operate Outputs

(Based On) Sample Period N N N N Y Y

See the table for a summary of features active in each mode.

Up / Down

YYNN N N

NNYY N N

Y (Count)

Encoder X1, X2 & X4

Y (Count)

Period /Rate

Y (Count)Y (Count)

Continuous /Rate

Rate Measurement

Y (Count)

PWM

Y (PWM Value)

Operating Mode Features

The Z Gate/Reset Terminal operates in one of fou r modes when the Store Count feature is in use. The four figures below detail the operation in each mode.

Store Count Mode 1: Store/Continue

In mode 1, the rising edge of a pulse input on the Z Gate/Reset terminal causes the current counter value to be read and stored in the Read Data file. The counter continues counting. The stored count is available in the Stored/Accumulated Count word. The stored count information remains until it is overwritten with new data.

Store/Continue

ead, Store Count, nd Continue Counting

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About the Modules 1-11

Store Count Mode 2: Store/Wait/Resume

In mode 2, the rising edge of a pulse input on the Z Gate/Reset terminal reads and stores the current counter value in the Stored/Accumulated Count word and inhibit counting while the Z Gate/Reset terminal is high. Counting resumes on the falling edge of the pulse at the Z Gate/Reset terminal. The stored count information remains until it is overwritten wi th new data.

Store/Wait/Resume

top Counting

tore Count Resume Counti

Store Count Mode 3: Store-Reset/Wait/Start

In mode 3, the rising edge of a pulse input on the Z Gate/Reset terminal stops counting, reads, and stores the current counter value in the Stored/Accumulated Count word, and resets the counter to zero. The counter does not count while the input pu lse on the Z Gate/Reset terminal is high. Counting resumes from zero on the falling edge of the pulse at the Gate/Reset terminal. The stored count information remains until it is overwritten wi th new data.

Store-Reset/Wait/Start

ounter has stopped Counting Stop Count, Store,

and Reset to zero from zero

Start Counti

Store Count Mode 4: Store-Reset/Start

In mode 4, the rising edge of a pulse input on the Z Gate/Reset terminal stores the current counter value in the Stored/Accumulated Count word and reset the counter to zero. The counter continues counting while the Z Gate/Reset terminal is high. The stored count information remains until it is overwritten with new data.

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1-12 About the Modules

O a

Store-Reset/Start

Start Counting

tore Count, nd Reset to zero

Continue Counti

Output Control

To connect an output to a compare window, you could program the module accordingly:

• Tie Output 0 to Window 0

• Program Window 0 ON Value to 2000

• Program Window 0 OFF Value to 5000

ON-OFF Operation of Output 0

Output remains energized for 3000 additional counts

utput turns ON at count value of 2000

If the OFF value is greater than the ON value, the output turns ON at 2000 and OFF at 5000. If the ON value is greater than the OFF value, the output turns OFF at 2000 and ON at 5000.

ffect of ON-OFF Value on Output Operation

Output remains Energized for 3000 additional counts

utput turns ON Output turns OFF

t count of 2000

at count of 5000

Output turns OFF Output turns O at count of 2000

Output turns OFF at count value of 50

Output remains Deenergized for 3000 additional counts

at count of 500

Turn Off Value > Turn On Value

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Turn On Value > Turn Off Value

Install the Module

Chapter

What This Chapter Contains

Read this chapter for information about how to install the modules.

The 1734-VHSC module is a two-module set. Module 1 houses the 1734-VHSC functionality while module 2 provides screw terminals necessary to access chassis gro und (Chas Gnd) and common (C).

Module 2 also connects terminal 4 to 5 and terminal 6 to 7 for ease of wiring power to the input device. Module 2 is not necessary for VHSC functionality but eases customer wiring. Module 2 does not use a node address, and it doesn’t consume power from the POINTBus. To reduce loop area, place module 2 adjacent (either side) to module 1.

For Information About How To See Page

Before You Begin 2-1 Install the Mounting Base Assembly 2-1 Install the Module 2-4 Install the Removable Terminal Block 2-6 Remove a Mounting Base 2-6 Wire the Modules 2-7

Before You Begin

1 Publication 1734-UM003B-E N-P - August 2005

ATTENTION

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component

boards.

• Do not touch circuit components inside the equipment.

• If available, use a static-safe workstation.

• When not in use, store the equipment in

appropriate static-safe packaging.

2-2 Install the Module

ATTENTION

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664-1), at altitudes up to 2000 meters without derating.

This equipment is considered Grou p 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as open-type equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure. Also, see the appropriate sections in this publication, as well as the Allen-Bradley publication 1770-4.1 (Industrial Automation Wiring and Grounding Guidelines), for additional installation requirements pertaining to this equipment.

Use these Series C modules with the following:

• ControlNet adapters with RSLogix 5000 software, version 11 or higher

• DeviceNet adapters

• EtherNet/IP adapters

with RSLogix 5000 software, version 11 or higher

• PROFIBUS adapters

Publication 1734-UM003B-EN-P - August 2005

Install the Module 2-3

Install the Mounting Base Assembly

The wiring base assembly (1734-TB or 1734-TBS) consists of a mounting base (cat. no. 1734-MB) and a removable terminal block (cat. no. 1734-RTB or 1734-RTBS).

You can install the assembly, or just the mounting base. T o in stall the mounting base and wiring base assembly on the DIN rail, proceed as follows.

ATTENTIO

POINT I/O is grounded through the DIN rail to chassis ground. Use zinc-plated, yellow-chromated steel DIN rail to assure proper grounding. The use of DIN rail materials (for example, aluminum, plastic) that can corrode, oxidize, or are poor conductors can result in improper or intermittent grounding.

Secure DIN rail to mounting surface approximately every 200 mm (7.8 inches).

1. Position the mounting base and wiring base assembly vertically above the installed units (adapter, power supply, or existing module).

2. Slide the mounting base down so that the interlocking side pieces engage the adjacent module or adapter.

Module Locking Mechanism

Insertable I/O Module

Module Wiring Diagram

Interlocking Side Pieces

Module

Status

Network

Status

NODE:

24VDC

Mechanical Keying

(orange)

DIN Rail Locking Screw

Mounting Base

Source

Output

(orange)

Slide-in Writable Label

1734

OB4E

RTB Removing Handle

Removable Terminal Block (RTB)

41825

Publication 1734-UM003B-E N-P - August 2005

2-4 Install the Module

3. Press firmly to seat the mounting base on the DIN rail.

The mounting base snaps into place.

Module Status

Network

Status

NODE:

24VDC Source Output

1734 OB4E

44013

Install the Module

ATTENTION

Do not discard the end cap shipped with an adapter or communication interface. Use this end cap to cover the exposed interconnections on the last mounting base on the DIN rail. Failure to do so could result in equipment damage or injury from electric shock.

Install the module before or after base installation. Make sure that you correctly key the mounting base before installing the module into the mounting base. In addition, make sure you position the mounting base locking screw horizontal as referenced to the base.

WARNING

When you insert or remove the module while backplane power is on, an electrical arc can occur . This could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance that can affect module operation.

Publication 1734-UM003B-EN-P - August 2005

Install the Module 2-5

Turn the keyswitch to align

1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise until the number required for the type of module you are installing aligns with the notch in the base.

1734-VHSC24 - Position 2 1734-VHSC5 - Position 2

the number with the notch.

Notch

(position 3 shown)

44009

2. Make certain the DIN rail locking screw is in the horizontal position, noting that you cannot insert the module if you unlock the locking mechanism.

Make sure the DIN rail locking screw is in the horizontal position.

44010

3. Insert the module straight down into the mounting base, and press to secure.

The module locks into place.

Module

Status

Network

Status

NODE:

24VDC

Source

Output

1734

OB4E

44012

Publication 1734-UM003B-E N-P - August 2005

2-6 Install the Module

Install the Removable Terminal Block

A removable terminal block comes with your mounting base assembly. Pull up on the RTB handle to remove and replace as necessary without removing any of the wiring. To reinsert the removable terminal block, use this procedure.

1. Insert the RTB end opposite the handle into the base unit.

This end has a curved section that engages with the mounting base.

Hook the RTB end into the mounting base end, and rotate until it locks into place.

44011

2. Rotate the terminal block into the mounting base until it locks itself in place.

Remove a Mounting Base

3. If an I/O module is installed, snap the RTB handle into place on the module.

WARNING

When you connect or disconnect the removable terminal block (RTB) with field-side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

To remove a mounting base, remove any installed module and the removable terminal block (if wired).

1. Unlatch the RTB handle on the I/O module.

Publication 1734-UM003B-EN-P - August 2005

Install the Module 2-7

2. Pull on the RTB handle to remove the removable terminal block.

WARNING

When you connect or disconnect the removable terminal block (RTB) with field-side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding.

3. Press in on the module lock on the top of the module, and pull up on the I/O module to remove from the base.

4. Remove the module to the right of the base you are removin g .

The interlocking portion of the base sits under the adjacent module.

5. Use a small-bladed screwdriver to rotate the orange DIN rail locking screw on the mounting base to a vertical position.

This releases the locking mechanism.

6. Lift the mounting base straight up to remove.

Wire the Modules

Refer to the figures and tables to wire the modules.

WARNING

If you connect or disconnect wiring while the field-side power is on, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.

Publication 1734-UM003B-E N-P - August 2005

2-8 Install the Module

42016

Module Status

Network Status

Status of Input A Status of Input B

Status of Input Z Status of Output 0 Status of Output 1

Input A

Input B

Input Z

Out 0

Input Aret

Input Bret

Input Zret Out 1

Module 1 Module 2

Out

Chassis

Ground

RET 0

-Vaux

+Vaux

Aret

Bret

Chas Gnd

RET

Zret

Out

aux

Chassis Ground

RET 1

-Vaux

aux

Chas Gnd

RET

-Vaux-Vaux

+Vaux

Publication 1734-UM003B-EN-P - August 2005

Module 1 Terminations Module 2 Terminations

0 A 0 Chassis ground 1 Aret 1 Chassis ground 2 B 2 Out 1 RET 3 Bret 3 Out 0 RET 4Z4Vaux 5Zret5Vaux 6Out 06Vaux + 7Out 17Vaux +

Chapter

Very High-Speed Counter Module Input and Output Data

What This Chapter Contains

Data Table

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 0

Input Information

Present Channel Data 32 -b it Value of the present counter state

In this chapter, you learn about the input and output data table of your 1734-VHSC24 and 1734-VHSC5 Modules.

For More Information About See Page

Data Table 3-1 Detailed Description of Data Table Information 3-2 Output Data 3-5 Configuration Data 3-6 Communicating Real Time Information 3-11

The following table shows the complete format of the input and output data.

Stored Channel Data 32-bit value of the stored/accumulated count

Status PE EF NR 0 FS FS OS OS 0 ZS BS AS C1 C0 ZD 0 Programming Error Code PE0000E10E9E8E7E6E5E4E3E2E1E0

Output Information

Counter Control 00000VRCPCR Output Control DS ES OE FO DS ES OE FO PWM Value 16-bit decimal value with range from 0-9500 (0-95.00%)

Configuration Information

Counter Configuration ZI MD MD MD CF CF CF CF Filter Selection 0 ZF BF AF FS FS FS F S Decimal Position 8-bit value used to modify the present channel data display Active Output Assembly Assembly number (0, 105 or 106) Time Base/PWM Period 16-bit value used to set the time base or PWM period Gate Interval 8-bit value used to set the gate interval

1 Publication 1734-UM003B-E N-P - August 2000

3-2 Very High-Speed Counter Module Input and Output Data

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 0

Scalar Output Ties 0 0000T3T2T1T0

Output Ties 1 0000T3T2T1T0 Rollover Value 32-bit value at which the counter is commanded to rollover Preset Value 32-bit value the counter is to be set to when CP is asserted On Value 1 32-bit value that sets the compare window Off Value 1 32-bit value that sets the compare window On Value 2 32-bit value that sets the compare window Off Value 2 32-bit value that sets the compare window On Value 3 32-bit value that sets the compare window Off Value 3 32-bit value that sets the compare window On Value 4 32-bit value that sets the compare window Off Value 4 32-bit value that sets the compare window PWM Safe State Value 16-bit safe state value for the PWM signal Counter Control SS Value 00000VRCPCR Output Control SS Value DS ES OE FO DS ES OE FO

8-bit value used to divide the Z input by 2

Detailed Description of Data Table Information

Present Channel Data (Input Word 1)

This is a 32-bit unsigned long-word value repre senting the current count of the 24-bit counter (configurations: count [0], x1 encoder [1], x2 encoder [2], PWM [3], x4 encoder [4]) or the frequency (configurations: period/rate [5], continuous/rate [6], rate measurement [7]). The range of values is 0 ≤ value ≤ 0x00FFFFFF (16,777,215).

Stored/Accumulated Channel Data (Input Word 2)

This is a 32-bit unsigned long-word value representing the stored count of the counter at the time of some specified event. In counter configurations (configurations: count [0], x1 encoder [1], x2 encoder [2], x4 encoder [4]) without store modes selected, these words are not updated. With store modes selected, they are the stored value of the counter at the time of the specified event (for example, rising ed ge of Z input). In PWM [3] configuration it is the counter value at the end of the period specified by the product of the time base x gate interval. In period/rate [5] and continuous/rate [6] configurations it is the total accumulation of unscaled Z pulses (for example, if scaling is set to 128, after 128 Z pulses the accumulator increases by 128 counts).

Publication 1734-UM003B-EN-P - August 2000

The maximum frequency that accumulation can follow in these two modes is 200 Hz x scalar value (for example, 200 Hz x 128 is 25 kHz).

Very High-Speed Counter Module Input and Output Data 3-3

Finally, in rate measurement [7] configuration, it is the total number of pulses seen at the A input accumulated over each period as specified by the product of the time base x gate interva l. The r ange of values occupy the entire 32-bit size from 0 ≤ value ≤ 0xFFFFFFFF (4,294,967,295). Changing the configuration does no t clear these words.

Module/Channel Status and Programming Error Codes (Input Words 3 and 4)

Programming Error bit (PE) - If an incomplete, incorrect, or conflicting set of configuration parameters is sent to the module, the PE bit is asserted and an error code is placed in the Programming Error Code word (assembly 68

operational state.

Bit definitions for the error code are:

). The module will not enter a normal

E10: An invalid assembly was chosen for poll consumption (0, 105,

or 106 are valid).

E9: The decimal point position is outside of acceptable range. E8: Counter 0 window ON and OFF values are equal a nd not zero

OR Counter 0 window ON or OFF value greater than 0x00FFFFFF.

E7: A tie has been connected to an unprogrammed window. E6: A configuration was selected that requires the scalar and none

was programmed or Multiple scalars were selected.

E5: The preset is out of range ( > 0x00FFFFFF). E4: A rollover of zero was programmed though PWM was not

selected OR A rollover was programmed and PWM was selected OR Rollover is out of range ( > 0x01000000).

E3: A configuration requiring time base was selected and no gate

interval was set OR Gate interval is out of range ( > 200) OR Product of time base and gate interval is greater than 3 seconds.

E2: A time base was entered that is not a multiple of 10 OR Time

base is out of range ( > 3000 or 3 seconds).

E1: ZF/BF/AF were selected and no filter was programmed OR

Multiple filters were selected.

E0: A reserved configuration/mode was programmed.

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3-4 Very High-Speed Counter Module Input and Output Data

EEPROM Fault status bit (EF) - If a fault is detected with the EEPROM during power up tests, this bit is asserted to 1. It indicates that the content of the EEPROM has been corrupted, most likely caused by loss of power during an executing write.

Not Ready status bit (NR) - Whenever power is applied to the module, the hardware must be initialized. During this time, the NR bit is asserted and the green module status indicator flashes.

Output Fault Status indicators (FS) - where bit 11 is output 1 and bit 10 is output 0. A 1 indicates the output is either shorted or open.

Output Status indicators (OS) - where bit 9 is output 1 and bit 8 is output 0. A 1 indicates the output is ON, 0 it is OFF.

Z input Status (ZS) - This bit indicates the present status of the Z input (1 indicates Z is ON, 0 indicates Z is OFF). This bit is unaffected by Z Invert, ZI, in the Counter Configuration word.

B input Status (BS) - This bit indicates the present status of the B input (1 indicates B is ON, 0 indicates B is OFF).

A input Status (AS) - This bit indicates the present status of the A input (1 indicates A is ON, 0 indicates A is OFF).

C[1,0] Stored data count - This count cycles through [ 0 0 ], [ 0 1 ], [ 1 0 ], [ 1 1 ], [ 0 0 ]… Each time the stored/accumulated count words are updated, C[1,0] is incremented. This feature assumes th e host’s sample rate (including network delay and program scan) is as fast or faster than the frequency of the event which updates C[1,0].

Zero frequency Detected (ZD) - This bit is operational when frequency configurations are programme d (configurations: period/rate [5], continuous/rate [6], rate measurement [7]).

In period/rate [5] and continuous/rate [6] configurations, counts are acquired during the ON state of the Z input. At very low frequencies the counter saturates, indicating a zero frequency detect. The time it takes to determine a zero frequency in these two configurations can be as long as 6.7 seconds ( 16,777,216 counts x 1/5 MHz x 2 half cycles of Z ).

In rate measurement [7] configuration pulses on the A input are counted over a sample interval specified by the time base. The time it takes to determine a zero frequency in this configuration is determined by the sample interval (for example, time base =

0.300 second therefore 300 milliseconds to determine ZF).

Publication 1734-UM003B-EN-P - August 2000

Very High-Speed Counter Module Input and Output Data 3-5

Output Data

Counter Control (Word 1)

VR Value Reset of stored/accumulated count. The transition of this

bit from 0 to 1 clears the stored/accumulated count word.

CP Counter Preset. The transition of this bit from 0 to 1 sets the

counter to the value specified by the Preset words. Outputs are adjusted according to the window compare values.

CR Counter Reset. The transition of this bit from 0 to 1 clears the

counter. Outputs are adjusted according to the window compare values.

Output Control (Word 2)

Diagnostic speed (DS) - When this bit is set (1), the short circuit and open wire diagnostics are filtered (50 ms) to prevent nuisance trips caused by noisy environments. When the bit is reset (0), diagnostics responds to a fault condition in less than 8 ms.Bits 7 and 3 report output 1 and 0, respectively.

Electronic-fuse Select (ES) - When this bit is set (1), outputs are disabled upon the detection of a fault (short circu it or open wire) and the output fault status indicator , FS, is latched. Recove ry from a faulted state is achieved by sending ES = 0 and OE = 1 for the afflicted output. When ES equals zero, a faulted output continues to operate as instructed until the fault is removed. In either case, FS is asserted to indicate a fault. Bits 6 and 2 report output 1 and 0 respectively.

Output Enable (OE) - When this bit is set (1), outputs are permitted to turn on from either a force on, FO, a compare match or as directed by the PWM settings. When OE equals zero, the module turns the associated output OFF. Bits 5 and 1 represent outputs 1 and 0 respectively.

Force Output (FO) - When this bit is set to 1, outputs are turned on if OE is 1. When FO equals zero, outputs may then be controlled by a compare match or as directed by the PWM settings. Bits 4 and 0 represent outputs 1 and 0 respectively.

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3-6 Very High-Speed Counter Module Input and Output Data

Pulse Width Modulation (PWM) Value (Output Word 3)

When the module is programmed for a PWM [3] configuration, the time base is enabled, the counter rollover, which is defined as the 1st ON and 1st OFF value for the respective channel is us ed. Ties can be used to direct the PWM signal to any or both outputs. The range of PWM values is 0 ≤ value ≤ 9500 decimal (0.00% ≤ value ≤ 95.00%). Entering a value below 0 results in a PWM of 0%; a value greater than 9500 results in a PWM of 95.00%. The actual duty cycle observed at the output depends on the turn on and turn off times of the MOSFET , the energy storage capability of the cable/load and the resistance from output to return.

Configuration Data

The following represents the configuration data used by the 1734-VHSC24 module.

Counter Configuration (Configuration Word 1)

Use this byte to select the type of counter desired.

07 06 05 04 03 02 01 00

ZI MD CF Counter 0

0 0 0 0 Counter 0 0 0 1 Encoder X1 0 0 1 0 Encoder X2 0011PWM 0 1 0 0 Encoder X4 0101Period/Rate 0 1 1 0 Continuous/Rate

0 1 1 1 Rate Measurement 0 0 0 Store Count Disabled 0 0 1 Mode 1 - store/continue 0 1 0 Mode 2 - store/wait/resume 0 1 1 Mode 3 - store, reset/wait/start 1 0 0 Mode 4 - store, reset/start 1 0 1 Reserved 1 1 0 Reserved 1 1 1 Reserved

0 Z input - 0 = not inverted 1 Z input - 1 = inverted

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Very High-Speed Counter Module Input and Output Data 3-7

Filter Selection (Configuration Word 2)

This byte sets the A/B/Z input filters.

Filter Selection

07 06 05 04 03 02 01 00

0ZFBFAF FS

0000No Filter 000150 kHz (10 µs + 0 µs/-1.6 µs) 00105 kHz (100 µs + 0 µs/-13.2 µs) 0100500 Hz (1.0 ms + 0 µs/-125 µs)

100050 Hz (10 ms + 0 ms/-1.25 ms) 0 A input not filtered 1 A input filtered

0 B input not filtered

1 B input filtered 0 Z input not filtered 1 Z input filtered

Decimal Position (Configuration Word 3)

This byte changes the significant digits of the frequency or counter display.

In the frequency modes (period/rate [5], continuous/rate [6 ], rate measurement [7]) for example, a -2 moves the decimal point left 2 places, dividing the frequency value by 100, a +1 moves it right, multiplying by 10. The firmware checks for placement to be in the range -4 ≤ value ≤ +2. A value outside th e range moves the decimal point to the zero position and asserts the programming error (PE) bit. Moving the decimal point to the left (negative), allows high frequencies, commonly present in rate measurement mode, to fit within a single 16-bit word. Moving the decimal point to the right (positive), allows low frequencies, commonly present in period and continuous rate modes, to have resolution displayed to 0.1 Hz and

0.01 Hz. Keep frequencies below 3.2 kHz for 0.1 Hz resolution and below 320 Hz for 0.01 Hz. Scalars of Z/128, Z/64, Z/32, and Z/16 should not be used when positioning is applied. 0 is the default setting.

Publication 1734-UM003B-E N-P - August 2000

3-8 Very High-Speed Counter Module Input and Output Data

In the counter modes (counter [0], x1 encoder [1], x2 encoder [2], pwm [3], x4 encoder [4]), it attenuates the counter display, for example, 20 divides count+1 by 20. The value may be in the range 0 < value ≤ 255. The result of requesting a number other than 1 performs the function: (COUNT + 1) / ATTENUATION. This is useful for scaling a large counter value to a smaller 16-bit value or a percentage. 1 is the default setting and zero reverts to 1 to prevent a divide by zero.

Active Output Assembly (Configuration Word 4)

This byte permits selection of either assembly 105 (0x69 - Counter/ Output Control) or 106 (0x6A - PWM Value) for poll consumption. Entering a zero causes the default assembly, 105, to be selected.

Ti me Base/Pulse Width Modulation (PWM) Period (Configuration Word 5)

This word sets the fundamental time base for the counter. Its resolution is in milliseconds with minimum 10 ms intervals (an interval of 10 milliseconds is a value of 10, 1 second is 1000). The maximum value that may be programmed is 3 seconds (3000). The time base must be entered when the PWM [3] and rate measurement [7] configurations are used.

Gate Interval (Configuration Word 6)

This byte sets the counter ’s gate inte rval using the time base setting as its time unit. Its resolution is determined by the time base. The actual gate interval is the product of the time base and the gate interval (for example, 50 ms gate interval may be produced with a time base of 10 and a gate interval of 5 or a time base of 50 and a gate interval of 1). The maximum value of the product of time base x gate interval is 3 seconds. The gate interval must be entered when the PWM [3] and rate measurement [7] configurations are used. The maximum value is

200.

Publication 1734-UM003B-EN-P - August 2000

Very High-Speed Counter Module Input and Output Data 3-9

Scalar (Configuration Word 7)

This byte scales the Z signal in the period/rate [5] and continuous/rate [6] configurations. If the filter is applied, then the filtered Z is scaled. Only one bit of the scalar should be set. Selecting a scalar causes accumulated counts to be adjusted accordingly. Selecting a scalar of 128 increases the accumulated count by 128 after 128 Z pulses are received. We highly recommend that anytime Z is scaled (divide by 2, 4, 8...), the Z input should be filtered; otherwise, noise could cause erroneous frequency readings.

Scalar Selection

07 06 05 04 03 02 01 00

00000001Z - F 00000 010Z/2 - F 00000100Z/4 - F 00001000Z/8 - F 00010000Z/16 - F 0010 0000Z/32 - F 01000000Z/64 - F 10000000Z/128 - F

1Where F

due to counter overflow.

indicates the frequency at which the zero frequency detect is asserted

min

Scalar

min

= 0.149 Hz

= 0.298 Hz

min

= 0.596 Hz

min

= 1.192 Hz

min

= 2.384 Hz

min

= 4.768 Hz

min

= 9.537 Hz

min

= 19.073 Hz

min

Output 0-1 T ies (Configuration Words 8 and 9)

The bits in these two bytes connect the specified output to the appropriate compare window. There are 4 windows associated with the counter. Each output may be connected to any number of windows, from 1 to all 4. The bits are defined as follows:

T0 - Tie Output to 1st Compare Window (also the PWM signal in

PWM [3] configuration)

T1 - Tie Output to 2 T2 - Tie Output to 3 T3 - Tie Output to 4

Compare Window

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3-10 Very High-Speed Counter Module Input and Output Data

Rollover (Configuration Word 10)

This long word sets the number of counts the counter accumulates before rolling over. For example, a value of 1000 produces a count sequence of: 998, 999, 0, 1, 2… while incrementing or 2, 1, 0, 999, 998… while decrementing. Rollover is a 32-bit numb er with a use able range of 1 ≤ value ≤ 0x01000000 (16,777,216). In PWM [3] configuration, this value should be zero; in count [0], x1 encoder [1], x2 encoder [2] and x4 encoder [4] configurations, it should be specified to some non-zero value; and in period/rate [5], continuous/ rate [6] and rate measurement [7] configurations is a ‘don’t care’.

Preset (Configuration Word 11)

This long word sets the preset value the counter is loaded with, when a Counter Preset, CP, command is issued. Preset is a 32-bit number with a range of 0 ≤ value ≤ 0x00FFFFFF (16,777,215).

Counter ON and OFF Windows (Configuration Words 12 to 19)

These long words program the four compare window's ON and OFF values. The first compare window for each counter is used in PWM [3] configuration and, when PWM is programmed for a channel, the associated compare window should remain at 0. The range of each entry is 0 ≤ value ≤ 0x00FFFFFF (16,777,215). When a tie is connected to a compare window, that window must be specified (ON value ≠ OFF value ≠ 0). These windows are always interpreted as counts, regardless of the configuration setting and may be computed as follows for frequency modes 5, 6, and 7:

Period/Rate (5) and Continuous Rate

counts = ( scalar x 2.5E6 ) / desired_frequency

Rate Measurement

counts = time_base [sec] x gate_interval x desired_frequency

Publication 1734-UM003B-EN-P - August 2000

Very High-Speed Counter Module Input and Output Data 3-11

Safe State Values (Configuration Words 20 through 22)

When either the host transitions to PROGRAM mode or a communication fault (broken network cable) occurs, the module copies these safe state words (counter control, output control, and PWM value) into its real-time working buffer. The definitions are identical to those described under Real-time Output Data with the following exception: entering a PWM Safe State value outside of the range, 0-9500, results in a Hold Last State to be executed.

Communicating Real Time Information

The Very High-Speed Counter Module uses several wor ds to communicate real time input and output data as well as non-real time module information (such as description and revision) and configuration.

Assembly 101 is produced for a polled connection. Assembly 102 is produced for a Change Of State (COS) connection. Assemblies 103, 104, 107 and 108 are by Explicit message only. Assemblies 105 and 106 are consumed in a polled connection (as directed by parameter

4).

Data may be read (get) or written (set) using an Explicit Message. For example, to read the Present Channel Data, assembly 101

(6516) can

be requested. The following table shows the words which can be exchanged.

Instances Services Field Bytes #101 (0x65) Get Present Channel Data 4

Status 2

#102 (0x66) Get Stored Channel Data 4

Status 2

#103 (0x67) Get Present Channel Data 4

Stored Channel Data 4 Status 2

#104 (0x68) Get Programming Error Code 2 #105 (0x69) Set/Get Counter Control 1

Output Control 1

#106 (0x6a) Set/Get PWM Value 2 #107 (0x6b) Set/Get PWM Value 2

Counter Control 1 Output Control 1

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3-12 Very High-Speed Counter Module Input and Output Data

#108 (0x6c) Set/Get Counter Configuration 1

Filter Selection 1 Decimal Position 1 Active Output Assembly 1 Time Base or PWM Period 2 Gate Interval 1 Scalar 1 Output 0 Ties 1 Output 1 Ties 1 Rollover Value 4 Preset Value 4 ON Value # 1 4 OFF Value #1 4 ON Value # 2 4 OFF Value #2 4 ON Value # 3 4 OFF Value #3 4 ON Value # 4 4 OFF Value #4 4 PWM Safe State Value 2 Counter Control SSV 1 Output Control SSV 1

Publication 1734-UM003B-EN-P - August 2000

Configure Your Module

Chapter

What This Chapter Contains

Configuration Overview

This chapter describes how to configure your Very High-Speed Counter modules with RSNetWorx.

For More Information About See Page

Configuration Overview 4-1 Add the Adapter to Your Network 4-1 Add I/O Modules to Your Network 4-2 Set the Counter’s Parameters 4-5 Check I/O Status and View the EDS File 4-9

Use RSNetWorx for DeviceNet software to configure your module. You can configure the module while it is online or offline.

This chapter shows configuration in the online mode. Configuration dialogs appear similar in both modes. The primary difference is that if you make changes offline, you must go online before the configuration changes take effect.

Add the Adapter to Your Network

Follow these steps to add an adapter to your network.

1. Start the RSNetWorx for DeviceNet software .

2. Add the communication device as shown in the figure, where

we chose a 1770-KFD RS232 Interface.

IMPORTANT

1 Publication 1734-UM003B-E N-P - August 2005

The scanner must always exist on the DeviceNet network at Node 00.

4-2 Configure Your Module

1. Click here to expand the list

of communication adapters.

2. Double-click here to choose the scanner. You can also click and drag the scanner name onto the network. Make sure you choose the 1734-ADN POINT I/O Scanner.

The scanner appears on the network.

Add I/O Modules to Your Network

After you add the communication device, you must add the POINT I/O modules connected to the scanner on the POINTBus. Use these procedures.

1. From the DeviceNet - RSNetWorx for DeviceNet dialog, click + next to Specialty I/O module to expand the selection.

2. From the DeviceNet - RSNetWorx for DeviceNet dialog, to choose a module, do one of the following, as shown in the figure.

• Double-click the catalog number to choose the module.

• Click and drag the module name onto the network.

Publication 1734-UM003B-EN-P - August 2005

Configure Your Module 4-3

The out-of-the-box node setting for 1734 modules is 63. You can change the setting by using the node commissioning tool. The node commissioning tool is available either online or offline.

1. Click here to expand the list of Specialty modules.

2. Double-click the catalog number to choose the module. You can also click and drag the module name onto the network.

IMPORTANT

If you commission a node online, you must power down your system before the change takes place.

Publication 1734-UM003B-E N-P - August 2005

4-4 Configure Your Module

3. From the DeviceNet - RSNetWorx for DeviceNet dialog, complete the actions shown in the figure.

1. Go to the pulldown T ools.

Select Node Commissioning.

2. Click Browse.

3. Select the module to change.

4. The node commissioning

dialog returns. It displays the node number and data rate.

5. Change the node number and Apply. The dialog then identifies the new setting.

6. Click Close to continue.

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Configure Your Module 4-5

Set the Counter’s Parameters

1. Right-click the module.

2. Click Properties to

configure your adapter.

After adding the module to the network, you must configure the modules for use. Use this procedure.

IMPORTANT

This procedure shows configuration in the online mode. Changes set in this mode take effect when you download to the individual module.

1. From the DeviceNet - RSNetWorx for DeviceNet dialog, complete the actions shown in the figure.

You can also left-click the module or name and the property dialog appears.

You see a counter module dialog with a series of tabs at the top of the dialog. See the tabs in the figure.

These dialogs are for the 1734-VHSC24 module. Use identical dialogs for the 1734-VHSC5 module.

These are the tabs you click to view the options.

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4-6 Configure Your Module

The module’s name appears here.

Type a description here.

The module’s address appears here. (This field is read only.)

2. From the counter module dialog, complete the actions sh own in the figure for the General dialog.

This dialog also shows the module’s device identity. These fields are read-only.

At any point, you can click here to finish changing configuration parame ters.

If configuration changes are made in offline mode, they do not take effect until the system goes online..

Publication 1734-UM003B-EN-P - August 2005

Use this pulldown menu to edit or view the parameters. Available choices are:

Configure Your Module 4-7

3. From the General dialog, click Device Parameters and complete the actions shown in the figure.

This dialog appears after clicking the Device Parameters tab. If you want the existing parameters uploaded from the module, select Upload. The following dialog then shows the existing parameters set on the module.

Configuration

POINTBus

Status

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4-8 Configure Your Module

T o configure your module, select Configuration and modify the parameters as desired for your application.

When complete, download to your module by clicking the Download to Device button. You can download each change as you make it using “Single,” or download all your changes using “All.”

4. To configure your module, from the Device Parameters dialog, select Configuration and complete the actions in the figure.

Click here when finished.

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Configure Your Module 4-9

Check I/O Status and View the EDS File

Use this procedure to complete the entries on the dialogs you display by clicking the appropriate tab for I/O Defaults and EDS File.

1. From the Counter Module screen, click I/O Defaults from the top of the dialog, completing the entries shown in the figure.

Click the I/O Defaults tab to display the default characteristics for this module.

This dialog shows the input/output defaults for the four modes. These are: Strobe Polled Change of state and Cyclic

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4-10 Configure Your Module

Click View File to view the actual EDS file (shown at the left).

2. From the Counter Module dialog, click EDS File from the top of the dialog, completing the entries shown in the figure.

Click the EDS File tab to display the statistics of the EDS file used to configure this module.

You can view the actual EDS file or edit the file.

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Access Instantiated Instances

Chapter

What This Chapter Contains

Use Instantiated Instances

In this chapter, you learn how to access imbedded Instantiated Instances (assemblies) in the software. The Very High-Speed Counter Module uses several words to communicate real time input an d output data as well as non-real time module information (such as description and revision) and configuration. These words have been preprogrammed into Instantiated Instances.

To use Instantiated Instances, follow these procedures.

1. Click the module to select the Class Instance Editor.

Click the module to select the Class Instance Editor.

You see the Service Class Instance Attribute Editor Warning dialog.

Click Yes when this dialog appears.

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5-2 Access Instantiated Instances

a. Select the service code from the list.

2. From the Service Class Instance Attribute Editor Warning dialog, click Yes.

You see the Service Class Instance Attribute Editor dialog.

3. From the Service Class Instance Attribute Editor dialog, complete these actions, referring to the figure .

a. Select the service code. b. For Recevie Data, select Size and Radix. c. Enter the class, instance, and attribute. d. Click Execute to initiate the action. e. Click Close to finish.

c. Enter the class, instance and attribute here.

b. Select the Receive Data size and radix.

d. Click Execute to initiate the action.

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Access Instantiated Instances 5-3

See the figure for an example, where you select Instance 101 (polled connection).

1. Type in the instance number here. This is an example of assembly number 102 (0x66). The class is always 4 and the attribute is always 3.

2. Click Execute.

3. Data received and status

information is recorded here.

4. Click Close to finish.

Assemblies

Available assemblies are:

• Assembly 101 is produced for a polled connection.

• Assembly 102 is produced for a Change Of State (COS)

connection.

• Assemblies 103, 104, 107 and 108 are by Explicit message only.

• Assemblies 105 and 106 are consumed in a polled connection

(as directed by parameter 4).

Data may be read (get) or written (set) using an Explicit Message. For example, to read the Present Channel Data, assembly 101

(6516) can

be requested.

Data is ordered as follows (byte 0 is the least significant byte): 8 bit byte Byte 0 16-bit word Byte 0, byte 1 32-bit long word Byte 0, byte 1, byte 2, byte 3

In this example, the table shows assembly 101 for the 1734-OE module.

Service Class Instance Attribute

0E (Get) 04 (Assembly) 65 (Present Data) 03 (Data Attribute)

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5-4 Access Instantiated Instances

Instances Services Field Bytes #101 (0x65) Get Present Channel Data 4

Status 2

#102 (0x66) Get Stored Channel Data 4

Status 2

#103 (0x67) Get Present Channel Data 4

Stored Channel Data 4 Status 2

#104 (0x68) Get Programming Error Code 2 #105 (0x69) Set/Get Counter Control 1

Output Control 1

#106 (0x6a) Set/Get PWM Value 2 #107 (0x6b) Set/Get PWM Value 2

Counter Control 1 Output Control 1

#108 (0x6c) Set/Get Counter Configuration 1

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Troubleshoot with the Indicators

Chapter

Use the Indicators for Troubleshooting

Each 1734-VHSC module has 7 indicators on the frontplate. Use these indicators for troubleshooting, referring to the figures and tables.

Module Status Network Status

Status of Input A

Indication Probable Cause Module Status

Off No power applied to device. Green Device is operating normally. Flashing Green Device needs commissioning due to configuration missing,

Flashing Red Recoverable fault is present. Red Unrecoverable fault may require device replacement. Flashing

Red/Green

Status of Input B Status of Input Z

Status of Output 0 Status of Output 1

incomplete or incorrect.

Device is in self-test.

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6-2 Troubleshoot with the Indicators

Indication Probable Cause Network Status

Off Device is not online.

Flashing Green Device is online but has no connections in the established

Green Device is online and has connections in the established

Flashing Red One or more I/O connections are in timed-out state Red Critical link failure is present - failed communication device.

Flashing Red/Green

Indication Probable Cause Input Status

Off Input is inactive. Yellow Input is active and under control.

- Device has not completed dup_MAC_id test.

- Device not powered - check module status indicator.

state.

Device detected error that preven ts it communicating on the network.

Communication faulted device - the device detected a network access error and is in communication faulted state. Device received and accepted an Identify Communication Faulted Request - long protocol mess age.

Indication Probable Cause Output Status

Off Output is inactive. Yellow Output is active and under control. Flashing Yellow Output is toggling. Flashing Red Output is faulted (open, short or no ou tput power). Flashing

Red/Yellow

Output is toggling and faulted (possibly open).

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Appendix

Configure Modules in RSLogix 5000 Software

What This Appendix Contains

Understand Data, Connection, and Communication Formats

Read this appendix for information about how to configure your modules in RSLogix 5000 software, including how to complete entries on these dialogs.

• Fault/Program Action

• Counter Configuration

• Output Configuration

Before you configure your modules, note the following about Data formats and Connection types.

• Data format type is Integer.

• Connection types are as follows.

• Data

• Listen Only

Communication formats for adapters are as follows.

• Listen Only - Rack Optimization

• None

• Rack Optimization

Choices for formats for the module depend on the Communication format for the adapter. See the table for a listing of possible module Connection formats based on adapter Communication formats.

Adapter Communication Formats Possible Module Connection Formats

Listen Only - Rack Optimization

None Data (default)

Rack Optimization Data (default)

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Data (default) Listen Only

Listen Only

A-2 Configure Modules in RSLogix 5000 Software

When you change Connection and Data Format note the following.

• You do not delete the existing module.

• You do not create a new module.

• You bring forward all possible configuration data for the new

setting.

• Configuration data that you cannot bring forward sets to the default value.

Once you apply new settings, this becomes the base configuration for the next change in Connection and Data Format settings. When you select Apply, you lose all configuration data from previous data formats.

See the table for a listing of tags and dialogs based on Connection type.

Connection Type Tags Dialogs

Data Input

Output Configuration

Listen Only Input General

General Connection Module Information Fault/Program Action Counter Configuration Output Configuration

Connection Module Information

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Configure Modules in RSLogix 5000 Software A-3

Configure Your Module

To configure your module in RSLogix 5000, use this procedure.

1. Configure your adapter, referring to the user manual for your adapter for information on how to configure the adap ter and add modules to the I/O configuration to include selecting a controller and communication module.

2. Add a 1734-VHSC3 or 1734-VHSC24 specialty module, according to the instructions in your adapter user manual.

3. From the Connection dialog, select a value for the Requested Packet Interval (RPI) entry.

• Default value is 80.0 milliseconds.

• Range is 2.0 to 750.0 milliseconds.

4. From the Connection dialog, leave these unchecked.

• Inhibit Module

• Major Fault On Controller If Connection Fails While in Run

Mode

5. Complete entries for these dialogs, as explained in this chapter.

• Fault/Program Action

• Counter Configuration

• Output Configuration

Use the Help Button

From the Fault/Program Action, Counter Configuration, and Output Configuration dialogs, click Help at the bottom of the dialog for information about how to complete entries on the dialogs.

From a warning dialog, click Help at the bottom of the dialog to get information about that specific error.

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A-4 Configure Modules in RSLogix 5000 Software

Work with the Fault/Program Action Dialog

Use these procedures to complete the entries from this dialog, which is not available with a Listen Only connection.

1. Check the checkboxes, as shown in the table.

Check this Checkbox

Counter Reset Reset the counter Counter Preset Set the value of the counter, as specified by the preset words Value Reset Reset the value of the accumulated (stored) count

2. If you selected PWM for Type, proceed as follows; otherwise,

see the next step.

a. For PWM Hold State, make a selection as follows.

- Check the checkbox to disable the PWM Value field.

- Uncheck the checkbox to set the PWM Value field.

b. For Value, select 0 -95% , if you did the following.

- Selected PWM for Type.

- Unchecked the checkbox for PWM Hold State.

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Configure Modules in RSLogix 5000 Software A-5

3. For the appropriate Output number, check the checkboxes for the values in the table.

Value Description

Force Output If checked, you turn outputs on if you check Output Enable.

If unchecked, you control the outputs by a compare match or as directed by the PWM settings.

Output Enable If checked, you permit outputs to turn on from one of the

these.

• Force on

• Force Output

• Compare match

• As directed by the PWM settings

If unchecked, the module turns the associated output OFF.

Diagnostic Speed If checked, you filter at 50 ms short for circuit and open wire

diagnostics to prevent trips caused by a noisy environment. If unchecked, diagnostics respond to a fault condition in less

than 8 ms.

Electronic Fuse Select If checked, outputs are disabled upon the detection of a fault

(short circuit or open wire) and the output fault status indicator, Fuse Select, is latched. You achieve recovery from a faulted state if you check Electronic Fuse Select and Output Enable for the output.

If unchecked, a faulted output continues to operate as instructed until the fault is removed.

In either case, Fuse Select is asserted to indicate a fault.

4. Complete one of these actions.

• Click another tab at the top of the dialog. or

• Click OK, which closes the dialog. or

• Click Cancel to return to default values. or

• Click Apply to save changes you made on any of the dialogs and continue to display the dialog, no ting that you enable the Apply button when you make changes to any of the dialogs.

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A-6 Configure Modules in RSLogix 5000 Software

Work with the Counter

In Hard Run mode, you disable all controls on the Counter Configuration dialog, in addition to the enable and disable state for

Configuration Dialog

each control.

Use the following procedures to complete entries from this dialog. After you select Type, refer to the table to see what other entries are available in the dialog.

These Entries Are Available

Store Count Mode X X Rollover X X Set to Zero Counter Attenuator X X X Frequency Precision X X X Time Base/Gate Interval X X Invert Input Z X X X X X Scalar X X X

If You Select This For Type Counter Encoder

X1, X2, X4

PWM Period/Rate Continuous/

Rate

Rate Measurement

Pulse Generator

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Configure Modules in RSLogix 5000 Software A-7

1. For Type, select one of these to set the Counte r Configuration mode.

• Counter (default)

• Encoder X1, Encoder X2, or Encoder X4

• Pulse Width Modulation (PWM)

• Period/Rate

• Continuous Rate

• Rate Measurement

• Pulse Generator

2. Refer to the table to see what entries to complete based on your selection for Type.

3. For Store Count Mode, select an option to determine which of the following modules you use for operating the Z Gate/Reset Terminal.

• Store Count Disabled (default)

• Store/Continue

• Store/Wait/Resume

• Store-Reset/Wait/Start

• Store-Reset/Start

4. For Rollover, select a value greater than the value for Preset.

• Default is 16777215.

• Select a value from 1 to 16777216.

5. For Preset, select a value smaller than the value for Rollover.

• Default is 0.

• Select a value from 0 to 16777215.

6. For Counter Attenuator, select a value from 0 to 255 to att enuate the counter display, noting that the default is 1.

7. For Frequency Precision, select a value, per the Selections for Period/Rate and Rate Measurement table, to multiply the frequency by the factor selected.

8. For Gate Multiplier, select a value, so that the product of Gate Multiplier and Time Base does not exceed 3 seconds (3000 milliseconds), referring to the table.

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A-8 Configure Modules in RSLogix 5000 Software

9. For Time Base, select a value between 10 and 3000 milliseconds,

in multiples of 10, referring to the table.

Selections for Period/Rate and Rate Measurement For This Value Default Is: Select

Frequency Precision X 1 X 0.0001

X 0.001 X 0.01 X 0.1 X 1 X 10

X 100 Gate Multiplier 1 1 to 200 Time Base 1000 10 to 3000 in multiples of 10

10. Note that the value for Actual Gate Interval that appears when counter type is Rate Measurement and shows the product of Gate Multiplier and Time Base below 3 seconds (3000 milliseconds).

11. For Filter, select the Frequency, which is the value you use to filter A/B/Z/ inputs when you check the checkboxes.

The frequency default and selections are the following.

• Default is 50 Hz.

• Selections for Filter in clude these.

- No Filter

- 50 kHz

- 5 kHz

- 500 Hz

- 50 Hz

12. Check the checkboxes for the following, which use the value you selected for Filter.

• Filter A

• Filter B

• Filter Z

13. For Invert Input Z, check the checkbox to invert the signal at Z input.

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Configure Modules in RSLogix 5000 Software A-9

14. For Scalar, choose one of these.

• 1

• 2

• 4

• 8

• 16

• 32

• 64

• 128

When the value for Scalar is one of the following, note that frequency precision <

• 16

• 32

• 64

• 128

15. Complete one of these.

• Click another tab at the top of the dialog. or

• Click OK, which closes the dialog. or

• Click Cancel to return to default values. or

• Click Apply to save changes you made on any of the dialogs and continue to display the dialog, no ting that you enable the Apply button when you make changes to any of the dialogs.

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A-10 Configure Modules in RSLogix 5000 Software

Work with the Output Configuration Dialog

Use this dialog to make On Value and Off Value entries for each output you select. If you make no entries for Outputs on this dialog, leave On Value and Off Value entries as 0; otherwise, use these procedures.

1. Check a checkbox for Outputs.

2. Select entries for On V alue and Off Value, referring to the table.

3. Complete one of these.

• Click another tab at the top of the dialog. or

• Click OK, which closes the dialog. or

• Click Cancel to return to default values. or

• Click Apply to save changes you made on any of th e dialogs and continue to display the dialog, noting that you enab le the Apply button when you make changes to any of the dialogs.

If you select For On Value Make an Entry For Off Value Make an Entry

Period Continuous Rate

Counter Encoder Pulse Generator

Not equal to Off Value Between 0-16777215

Not equal to Off Value Greater than 0 Less than Rollover Value

Not equal to On Value Between 0-16777215

Not equal to On Value Greater than 0 Less than Rollover Value

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Index

active features per mode 1-10 assembly selection 3-8, 3-11

base assembly, mounting 2-1

checking I/O defaults 4-6 class instance attribute editor 5-2 class instance editor 5-1 commissioning a node 4-2 compare window on/off values 3-10 configuration data 3-6 configuration software 4-1 connecting an output to a compare window 1-12 connecting outputs to compare windows 3-9 continuous/rate measurement mode 1-2 continuous/rate mode - operation 1-7 counter control 3-5 counter mode 1-2 counter mode operation 1-2 counter type selection 3-6

data table - complete format 3-1 decimal position - frequency or counter display 3-7

indicators 6-1 input status indicator 6-2 input voltage range 1-1 input word - present channel data 3-2 installation module removable terminal block 2-4

wiring base assembly 2-1

2-2

keyswitch position 2-3

modes of operation 1-2 module installation 2-2 module status indicator 6-1 module/channel error bits 3-3 mounting base, removal 2-4 mounting, base assembly 2-1

network status indicator 6-2 new data indicator 1-9 node commissioning tool 4-2 node setting (out of box) 4-2

encoder mode 1-2 encoder mode operation 1-3

feedback 1-1 filter selection 3-7 filter settings 1-1 format - data table 3-1

gate interval setting 3-8

operating mode features 1-10 operation

continuous/rate mode

counter mode 1-2 encoder mode 1-3 pulse width modulation mode 1-8 rate measurement mode 1-8 scalar 1-6 output control 1-12 output data control word 3-5 output status indicator 6-2 output ties 3-9 outputs 1-2

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1-7

2 Index

parameter setting 4-4 period rate mode - operation 1-5 period/rate mode 1-2 positioning the keyswitch 2-3 present channel data 3-2 preset configuration 3-10 pulse width modulation mode 1-2 pulse width modulation mode operation 1-8 pulse width modulation output word 3-6 PWM mode 1-2 PWM timebase selection 3-8

rate measurement mode 1-2 rate measurement mode operation 1-8 rollover configuration 3-10 RTB, installation and removal 2-4

safe state configuration 3-11 scalar 3-9 scalar operation 1-6

scalar selection 3-9 selecting a filter 3-7 selecting counter type 3-6 selecting the scalar setting 3-9 setting module parameters 4-4 setting rollover counts 3-10 setting safe state values 3-11 setting the compare windows 3-10 setting the counter gate interval 3-8 setting the preset value 3-10 stored/accumulated channel data 3-2

viewing EDS files 4-6

wiring base assembly 2-1

Z gate/reset terminal modes of operation 1-10 Z gate/reset terminal operation 1-10

Publication 1734-UM003B-EN- P - Aug ust 2005

Pub. Title/Type Very High-Speed Module

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Publication 1734-UM003B-EN-P - August 2005 6 PN 957974-42

Rockwell Automation 1734-VHSC24 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Important User Information

Summary of Changes

Summary of Changes

Table of Contents

Preface

Purpose of This Manual

Who Should Use This Manual

Related Products and Documentation

Definitions

About the Modules

What This Chapter Contains

Module Description and Features

Operating Modes

Operating Mode Features

Install the Module

What This Chapter Contains

Before You Begin

Install the Mounting Base Assembly

Install the Module

Install the Removable Terminal Block

Remove a Mounting Base

Wire the Modules

Very High-Speed Counter Module Input and Output Data

What This Chapter Contains

Data Table

Detailed Description of Data Table Information

Output Data

Configuration Data

Communicating Real Time Information

Configure Your Module

What This Chapter Contains

Configuration Overview

Set the Counter’s Parameters

Check I/O Status and View the EDS File

Access Instantiated Instances

What This Chapter Contains

Use Instantiated Instances

Assemblies

Troubleshoot with the Indicators

Use the Indicators for Troubleshooting

Configure Modules in RSLogix 5000 Software

What This Appendix Contains

Understand Data, Connection, and Communication Formats

Configure Your Module

Use the Help Button

Work with the Fault/Program Action Dialog

Work with the Output Configuration Dialog

Index

Back Cover