Rockwell Automation 1798-IB4 User Manual

FlexArmor

1798-ADN (Contains information on 1798-IB4, -IB8, -OB4E, -OB8E,

-IB4D, -IE4, -OE2)

User Manual

Important User Information

Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Rockwell Automation be responsible or liable for indirect or consequential damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the

Application, Installation and Maintenance of Solid-State Control

(available from your local Rockwell Automation office), describes some important differences between solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.

Throughout this publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard, avoid a potential hazard, and recognize the consequences of a potential hazard:

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.

ATTENTION

Identifies information about practices or circumstances that can 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.

FlexArmor and RSNetWorx for DeviceNet are trademarks of Rockwell Automation. MicroSoft Windows is a registered trademark of Microsoft Corporation.

Summary of Changes

New Modules Information

In this version of the FlexArmor™ User Manual information was added about the following three FlexArmor modules:

1798-IB4D,

•

1798-IE4, and

•

1798-OE2.

•

Communication and mapping information about these modules are contained in chapter 2. Configuration information is found in chapter

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Summary of Changes 2

Notes:

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Preface

Introduction

Audience

What We assume

Use this manual to install, communicate with, map, configure, and troubleshoot the FlexArmor system.

You will find the following information in this manual:

For information about See

installing your DeviceNet adapter module Chapter 1 how communication takes place and I/O image mapping Chapter 2 how to configure your DeviceNet adapter Chapter 3 troubleshooting Chapter 4 module specifications Appendix A

This manual is intended for engineers and technicians who are installing, programming, and maintaining a FlexArmor system.

We assume you:

Common Techniques Used in This Manual

know each of your device’s I/O parameters and requirements

•

are familiar with RSNetWorx for DeviceNet™

•

are familiar with the Microsoft

•

The following conventions are used throughout this manual:

Bulleted lists provide information, not procedural steps.

•

Numbered lists provide sequential steps.

•

• Pictures of keys and/or screens represent the actual keys you

press or the screens you use.

• Actions you must perform appear in bold text. For example:

Click View to display the EDS file.

Windows® environment

1 Publication 1798-UM001B-EN-P - November 2002

Preface 2

Rockwell Automation Support

Before you contact Rockwell Automation for technical assistance, we suggest you please review the troubleshooting information contained in chapter 4 of this publication first.

If the problem persists, call your local distributor or contact Rockwell Automation in one of the following ways:

Phone United

States/Canada Outside United

States/Canada

Internet

⇒

1.440.646.5800

You can access the phone number for your country via the Internet:

1. Go to http://www.ab.com

2. Click on (http://support.automation.rockwell.com)

3. Under

1. Go to http://www.ab.com

2. Click on (http://support.automation.rockwell.com)

Product Support

Support Centers

Product Support

, click on

Contact Information

Your Questions or Comments on this Manual

If you find a problem with this manual, please notify us of it on the enclosed How Are We Doing form found in the back of the manual.

Publication 1798-UM001B-EN-P - November 2002

Install Your DeviceNet Adapter Module

How Communication Takes Place and I/O Image Table Mapping

Table of ContentsTable of Contents

Chapter 1

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

About the FlexArmor System . . . . . . . . . . . . . . . . . . . . . . . 1-1

DeviceNet Adapter Components . . . . . . . . . . . . . . . . . . . . 1-2

Diagnostic Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Mount the FlexArmor Platform. . . . . . . . . . . . . . . . . . . . . . 1-3

Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Set the Network Address Switch on the DeviceNet Adapter. 1-4

Install Your FlexArmor DeviceNet Adapter Module. . . . . . . 1-4

Connect External Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Chapter 2

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Communication Over the FlexArmor Backplane . . . . . . . . . 2-1

About I/O Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Description of Adapter Input Status Word. . . . . . . . . . . 2-3

Communication Choices . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Mapping Data into the Image Table. . . . . . . . . . . . . . . . . . 2-5

Description of 1798-IB4 Image Table Mapping . . . . . . . 2-5

Description of 1798-IB4D Image Table Mapping . . . . . . 2-6

Description of 1798-IB8 Image Table Mapping . . . . . . . 2-7

Description of 1798-OB4E Image Table Mapping . . . . . 2-8

Description of 1798-OB8E Image Table Mapping . . . . . 2-9

Description of 1798-IE4 Image Table Mapping . . . . . . . 2-9

Description of 1798-OE2 Image Table Mapping. . . . . . . 2-12

Chapter 3

Configure Your DeviceNet Adapter

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Configure Your Adapter’s FlexArmor System. . . . . . . . . 3-1

About RSNetWorx for DeviceNet . . . . . . . . . . . . . . . . . . . . 3-2

Configure Your FlexArmor Adapter and System Online . . . 3-3

Configure the Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Configure the Module . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

View Adapter Parameters . . . . . . . . . . . . . . . . . . . . . . . 3-7

Special Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

View I/O Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Map the Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Chapter 4

Troubleshooting

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Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Troubleshoot With the Indicators. . . . . . . . . . . . . . . . . . . . 4-1

Table of ContentsTable of Contents ii

Specifications

Appendix A

Input Module Specifications. . . . . . . . . . . . . . . . . . . . . . . . A-1

Specifications for the 1798-IB4 Module . . . . . . . . . . . . . A-1

Specifications for the 1798-IB8 Module . . . . . . . . . . . . . A-2

Specifications for the 1798-IB4D Module. . . . . . . . . . . . A-3

Specifications for the 1798-IE4 Module . . . . . . . . . . . . . A-5

Output Module Specifications . . . . . . . . . . . . . . . . . . . . . . A-7

Specifications for the 1798-OB4E Module . . . . . . . . . . . A-7

Specifications for the 1798-OB8E Module . . . . . . . . . . . A-8

Specifications for the 1798-OE2 Module . . . . . . . . . . . . A-9

Communication Adapter Specifications. . . . . . . . . . . . . . . A-12

Field Termination Plug Specifications. . . . . . . . . . . . . . . . A-13

Baseplate Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . A-14

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Chapter

Install Your DeviceNet Adapter Module

Chapter Objectives

About the FlexArmor System

This chapter describes the FlexArmor system, the DeviceNet Adapter and the procedures for installing your DeviceNet adapter module. The sections in this chapter include:

the FlexArmor system

•

adapter components

•

power requirements

•

mount the adapter

•

set the adapter address switches

•

install the adapter module

•

connect the external wiring

•

FlexArmor is a small, modular block I/O system for distributed applications that performs all of the functions of rack-based I/O. The FlexArmor system contains the following components:

Baseplate, 1798-BP2, -BP4, -BP6, or -BP8

•

DeviceNet adapter/power supply, 1798-ADN - powers the

•

internal logic for as many as eight I/O modules I/O modules contain the bus interface and circuitry needed to

•

perform specific functions related to your application. These I/O modules include:

– Input modules, 1798-IB4 or -IB8, -IB4D, and -IE4 – Output modules, 1798-OB4E or -OB8E, and OE2

• Field Termination Plug (FTP), 1798-DFTP1 or -DFTP2

• Filler module, 1798-N2

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1-2 Install Your DeviceNet Adapter Module

1798-ADN

FTP (Field Termination Plug)

1798-0B4E

1798-N2

42537

1798-BP4 4-position Baseplate

For information on how communications occurs on the FlexArmor system backplane, refer to Chapter 2.

DeviceNet Adapter Components

Power Requirements

The adapter module consists of the following major components:

diagnostic indicators

•

node address switch

•

Diagnostic Indicators

Diagnostic indicators are located on the front panel of the adapter module. They show both normal operation and error conditions in your remote I/O system. The indicators are:

• Mod/Net status

• I/O status

A complete description of the diagnostic indicators and how to use them for troubleshooting is explained in Chapter 4.

The FlexArmor system requires a current of 400 mA at 24V dc from the 1798-FTP sensor power connector for FLEX bus operation. This is sufficient to support up to 8 modules. Remember to add this amount to current requirements for other modules using the same 24V supply. The FlexArmor system consumed 90 mA of DeviceNet power.

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Install Your DeviceNet Adapter Module 1-3

Mount the FlexArmor Platform

102.5 mm

4.0 in.

The DeviceNet adapter module can be mounted directly on a machine. Refer to the specific method of mounting below.

Mounting Instructions

To mount the platform on a wall or panel, use the screw holes provided in the FlexArmor Baseplate.

Install the mounting Baseplate as follows:

1. Lay out the required points as shown in the drilling dimension

drawing.

25 mm (0.98 in.) clearanc e all around

102.5 mm

4.0 in.

102.5 mm

4.0 in.

102.5 mm

4.0 in.

92 mm

3.6 in.

69 mm

2.7 in.

42665

2. Drill the necessary holes for #10 (M6) machine or self-tapping

screws.

3. Mount the Baseplate using #10 (M6) screws.

4. Connect functional ground to ground using the functional

ground lug connector.

To view a drill template for the FlexArmor Baseplate, refer to the website http://www.ab.com/abecad/.

You are now ready to set the node address on the FlexArmor adapter module and to install your selected FlexArmor components. Please refer to the individual component installation instructions for guidelines.

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1-4 Install Your DeviceNet Adapter Module

Set the Network Address Switch on the DeviceNet Adapter

Valid node addresses are 00 to 63.

Set the network address using the rotary switches. The setting of the network address cannot be changed using the DeviceNet configuration software.

Each module is shipped set for node address 63. The switches are located on the underside of the module. The two switches are:

MSD (most significant digit)

•

LSD (least significant digit)

•

To reset the node address, use a small blade screwdriver to rotate the switches. Line up the small black dot on the switch with the number setting you wish to use.

MSD

Install Your FlexArmor DeviceNet Adapter Module

Switches are shown in the 63 position.

IMPORTANT

To install the FlexArmor DeviceNet Adapter Module:

1. Hold the adapter at an angle and engage the top of the adapter

in the indention on the rear of the Baseplate.

IMPORTANT

2. Press the module down flush with the panel until the locking

lever locks.

The baud rate for the adapter is set by way of “baud detection” (Autobaud) at power up.

The adapter module must be installed only in the adapter slot, next to the FTP.

LSD

43387

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Install Your DeviceNet Adapter Module 1-5

3. Repeat steps 1 and 2 for each I/O module for the remaining

Baseplate I/O slots.

Connect External Wiring

IMPORTANT

I/O modules can be installed in any slot location to the right of the adapter module. The adapter is capable of addressing eight modules.

4. Screw down the module retaining screws to ensure IP67

compliance.

Torque the screws to 0.5-0.7 Nm. (4.43-6.2 inch

IMPORTANT

•

pounds). Dust caps on the I/O modules must have 4 inch

•

pounds of torque to maintain IP67 compliance.

Connect external wiring to the DeviceNet Field Termination Plug (DFTP) as shown below.

1. Connect the DeviceNet cable to the DFTP as shown.

Connect Connector Pin To

BLK Wire 3 -V BLU Wire 5 CAN* Low Base Wire 1 Drain WHT Wire 4 CAN High RED Wire 2 +V *CAN=Controller Area Network

Micro Male connector (In)

DFTP1 DFTP2

Micro Female connector (Daisy Chain Out)

42538

Mini Male connector (In)

Mini Female connector (Daisy Chain Out)

42653

2. Insert the connector into the mating connector on the

3. DeviceNet FTP module.

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1-6 Install Your DeviceNet Adapter Module

4. Connect 24V dc power to sensor voltage for adapter and input

module power.

5. Connect 24V dc power to output voltage for output module

power.

Pin Function

1 Output Power + 2 Sensor Power + 3 Sensor Power 4 Output Power -

Male Connector

42539

Publication 1798-UM001B-EN-P - November 2002

Chapter

How Communication Takes Place and I/O Image Table Mapping

Chapter Objectives

Communication Over the FlexArmor Backplane

Read

Network

DeviceNet Adapter

Write

In this chapter, you will learn about:

communication over the FlexArmor backplane (between the

•

DeviceNet adapter and the I/O modules) how data is mapped into the I/O image table

•

One 1798-ADN DeviceNet adapter can interface with up to eight FlexArmor I/O modules placed in a FlexArmor baseplate. The adapter communicates to other network system components (typically one or more controllers or scanners, and/or programming terminals) over the DeviceNet network. The adapter communicates with its I/O modules

over the backplane.

I/O Module I/O Module I/O Module

Inputs Inputs Inputs

Read

Status Status Status

Outputs Outputs Outputs

Configuration Configuration Configuration

Words

Write Words

Slot 0

The I/O map for a module is divided into read words and write words. Read words consist of input and status words and write words consist of output and configuration words. The number of read words

or write words can be zero or more. The length of each I/O module’s read words and write words varies in size depending on module complexity. Each I/O module will support at least 1 input word or 1 output word. Status and configuration are optional, depending on the module.

1 Publication 1798-UM001B-EN-P - November 2002

Slot 1 Slot 7

2-2 How Communication Takes Place and I/O Image Table Mapping

For example, a 4 point discrete input module will have up to 2 read words and 1 write word.

About I/O Structure

4-point Discrete Input Module

Check the I/O map for each module for the exact mapping.

Output data is received by the adapter in the order of the installed I/O modules. The Output data for slot 0 is received first, followed by the Output data for slot 1, and so on up to slot 7.

The first word of input data sent by the adapter is the Adapter Status Word. This is followed by the input data from each slot, in the order of the installed I/O modules. The Input data from slot 0 is first after the status word, following by Input data from slot 2, and so on up to slot 7.

I/O Image Input Size

1 or 2 Words

Output Size

0 or 1 Words

Not used

Module Image

Inputs

Not used

Delay Time

Delay Tim e

Network READ

Network WRITE

DeviceNet Adapter

Read Data

Adapter Status

Slot 0 Input Data

Slot 1 Input Data

...

Slot 7 Input Data

Slot 0 Output Data Slot 1 Output Data

...

Slot 7 Output Data

...

Read

Write

I/O Module Slot 0

I/O Module Slot 1

...

I/O Module Slot 7

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How Communication Takes Place and I/O Image Table Mapping 2-3

Description of Adapter Input Status Word

The input status word consists of:

I/O module fault bits - 1 status bit for each slot

•

node address changed - 1 bit

•

I/O Module Fault Bits

Bit: 15 9 through 15 8 7 6 5 4 3 2 1 0

Not Used

Node Address Changed Bit

Slot 7

Slot 6

Slot 5

Slot 4

Slot 3

Slot 2

Slot 1

Slot 0

42843

The adapter input status word bit descriptions are shown in the following table.

Bit Description

I/O Module Fault

Bit Explanation

0 This bit is set (1) when an error is detected in slot

position 0.

1 This bit is set (1) when an error is detected in slot

position 1.

2 This bit is set (1) when an error is detected in slot

position 2.

3 This bit is set (1) when an error is detected in slot

position 3.

4 This bit is set (1) when an error is detected in slot

position 4.

5 This bit is set (1) when an error is detected in slot

position 5.

Node Address Changed

6 This bit is set (1) when an error is detected in slot

position 6.

7 This bit is set (1) when an error is detected in slot

position 7.

8 This bit is set (1) when the node address switch setting

has been changed since power up.

9 thru 15Not used - sent as zeroes.

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2-4 How Communication Takes Place and I/O Image Table Mapping

Possible causes for an I/O Module Fault are:

transmission errors on the FlexArmor backplane

•

a failed module

•

a module removed from the FlexArmor Baseplate

•

incorrect module inserted in a slot position

•

the slot is empty, but the platform is configured for a module in

•

the slot location

Communication Choices

The FlexArmor DeviceNet adapter module supports multiple communication choices. These choices all use the default I/O structure previously described. The adapter master makes the actual communication choice. The choices are:

Polled - data is sent by the adapter in response to received data

Strobe - data is sent by the adapter in response to the strobe

command. The single bit allocated to the adapter in the strobe message is not used. If the configured size of the input data (sent from the adapter) is greater than 8 bytes, the strobe connection establishment will fail. In this case, the input size must be re-configured to 8 bytes or less.

Change of State - data is sent by the adapter based on detection of any changed value within the input data. Data is independently received based on change of state from the sender. Data in both directions can be acknowledged or unacknowledged depending on the run time configuration of the system.

Cyclic - data is sent cyclically by the adapter based on a configured time value. Data is independently received cyclically from the sender. Data in both directions can be acknowledged or unacknowledged depending on the run time configuration of the system.

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How Communication Takes Place and I/O Image Table Mapping 2-5

Mapping Data into the Image Table

All FlexArmor modules are supported by the DeviceNet adapter. At present, these consist of:

Module Description Catalog Number For image table

mapping refer to:

4 Sinking Input Module 1798-IB4 2-5 4 Sinking Input

1798-IB4D 2-6

Diagnostic Module 8 Sinking Input Module 1798-IB8 2-7 4 Electronically Fused

1798-OB4E 2-8

Sourcing Output Module 8 Electronically Fused

1798-OB8E 2-9

Sourcing Output Module 4 Analog Input Module 1798-IE4 2-9 2 Analog Output Module 1798-OE2 2-12

Description of 1798-IB4 Image Table Mapping

Read

Write

I/O Image Input Size

1 or 2 Words

Output Size

0 or 1 Word

Reserved

Fault Enabled

Not used

Module Image

Reserved

Inputs

Fault Input

Delay Time

42840

Memory Map of 4 Point Discrete Input Module Image Table - 1798-IB4

Decimal Bit

Octal Bit17161514131211100706050403020100

Where D = Input Data (D0 correspon ds to input 0, D1 corresponds to input 1, etc.), DT = Input Delay Time (DT 00-3 corresponds to inputs 0 through 3), FO = Fault Bit - Indicates status of module sensor power (0=Normal, 1=Sensor Power Shorted), FE = Fault Enabled Bit, must be set to return fault bit (FO) from module. The “Fault Enabled” bit will be set

automatically if the input filter times are configured through RSNetWorx for DeviceNet.

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Size

Not used D3 D2 D1 D0 Read Word 1

Not used FO Read Word 2

Reserved FE Reserved DT 00-3 Write Word 1

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2-6 How Communication Takes Place and I/O Image Table Mapping

Input Delay Times for the 1798-IB4 Input Module

Bits Description Selected Delay Time

02 01 00 Delay Time for Inputs 00-03 0 0 0 Delay Time 0 (default) 256µs

0 0 1 Delay Time 1 512µs 0 1 0 Delay Time 2 1ms 0 1 1 Delay Time 3 2ms 1 0 0 Delay Time 4 4ms 1 0 1 Delay Time 5 8ms 1 1 0 Delay Time 6 16ms 1 1 1 Delay Time 7 32ms

Description of 1798-IB4D Image Table Mapping

Read

Write

I/O Image Input Size

1 or 2 Words

Output Size

0 or 1 Word

Short Circuit Detect

Reserved

Open Wire Detect

Open Wire Disables

Module Image

Not Used

Not used

Reserved

Inputs

Delay Tim e

Memory Map of 4 Point Discrete Input Module Image Table - 1798-IB4D

Decimal Bit

Octal Bit17161514131211 100706050403020100Dec

Where I = Input Data (I0 corresponds to input 0, I1 corresponds to input 1, etc.); DT = Input Delay Time (DT 00-3 corresponds to inputs 0 through 3) W = Open Wire Detect; S = Short Circuit Detect; D = Open Wire Disable

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Size

S3 S2 S1 S0 W3 W2 W1 W0 Not Used I3 I2 I1 I0 Read W ord 1

Not Used Read W ord 2

Reserved D3 D2 D1 D0 Reserved DT 00-3 Write Word 1

43388

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How Communication Takes Place and I/O Image Table Mapping 2-7

Input Delay Times for the 1798-IB4D Input Module

Bits Description Selected Delay Time

02 01 00 Delay Time for Inputs

00-03

0 0 0 Delay Time 0 (default) 256µs

0 0 1 Delay Time 1 512µs 0 1 0 Delay Time 2 1ms 0 1 1 Delay Time 3 2ms 1 0 0 Delay Time 4 4ms 1 0 1 Delay Time 5 8ms 1 1 0 Delay Time 6 16ms 1 1 1 Delay Time 7 32ms

Description of 1798-IB8 Image Table Mapping

Read

Write

I/O Image Input Size

1 or 2 Words

Output Size

0 or 1 Word

Reserved

Fault Enabled

Not used

Module Image

Reserved

Inputs

Fault Input

Delay Time

42840

Memory Map of 8 Point Discrete Input Module Image Table - 1798-IB8

Decimal Bit

Octal Bit17161514131211100706050403020100

Where D = Input Data (D0 correspon ds to input 0, D1 corresponds to input 1, etc.), DT = Input Delay Time (DT 00-07 corresponds to inputs 0 through 7) FO = Fault Bit - Indicates status of module sensor power (0=Normal, 1=Sensor Power Shorted), FE = Fault Enabled Bit, must be set to return fault bit (FO) from module. The “Fault Enabled” bit will be set automatically if the input filter times are configured through RSNetWorx for DeviceNet.

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Size

Not used D7 D6 D5 D4 D3 D2 D1 D0 Read Word 1

Not used FO Read Word 2

Reserved FE Reserved DT 00-07 Write Word 1

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2-8 How Communication Takes Place and I/O Image Table Mapping

Input Delay Times for the 1798-IB8 Input Module

Bits Description Selected Delay Time

02 01 00 Delay Time for Inputs 00-07 0 0 0 Delay Time 0 (default) 256µs

0 0 1 Delay Time 1 512µs 0 1 0 Delay Time 2 1ms 0 1 1 Delay Time 3 2ms 1 0 0 Delay Time 4 4ms 1 0 1 Delay Time 5 8ms 1 1 0 Delay Time 6 16ms 1 1 1 Delay Time 7 32ms

Description of 1798-OB4E Image Table Mapping

I/O Image

Read

Write

Input Size

0 or 1 Word

Output

1 Word

Not Used

Reserved

Module Image

Fault Bits

Outputs

Memory Map of 4 Point Discrete Output Module Image Table - 1798-OB4E

Decimal Bit

Octal Bit17161514131211100706050403020100

Where O = Output Value (O0 corresponds to output 0, O1 corresponds to output 1, etc.) F0-F3 = Indicate the status of each output point (0=Output normal, 1=Output faulted)

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Not used F3 F2 F1 F0 Read Word 1 Reserved O3 O2 O1 O0 Write Word 1

42824

Size

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