Rockwell Automation 1794-XXXX User Manual

Page 1

User Manual

FLEX I/O High-Density Analog Modules

Catalog Numbers IE4XOE2XT, 1794-IE8XOE4

1794-IE8, 1794-IE8XT, 1794-OE4, 1794-OE4XT, 1794-IE12, 1794-OE12, 1794-IE4XOE2, 1794-

Page 2

Important User Information

IMPORTANT

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 your local Rockwell Automation sales office or online at

http://www.rockwellautomation.com/literature/) 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: 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.

SGI-1.1 available from

ATTENTION: Identifies information about practices or circumstances that can lead to: personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.

SHOCK HAZARD: Labels may be on or inside the equipment, such as a drive or motor, to alert people that dangerous voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment, such as a drive or motor, to alert people that surfaces may reach dangerous temperatures.

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

Allen-Bradley, Rockwell Automation, FLEX I/O, DeviceNet, and TechConnect are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Ro ckwell Automation are property of their respective companies.

ii Rockwell Automation Publication 1794-UM062A-EN-P - September 2012

Page 3

Table of Contents

Preface

Who Should Use this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

About the Vocabulary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Common Techniques Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . vii

Chapter 1 Overview of FLEX I/O and Your Analog Module

Install Your FLEX I/O Module

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

The FLEX I/O System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Types of FLEX I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

How FLEX I/O Analog Modules Communicate with Programmable

Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Physical Features of Your Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Chapter 2

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Before You Install Your Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Power Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Install the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Mount on a DIN Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Mount on a Panel or Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Mount the Analog Module on the Terminal Base Unit . . . . . . . . . . 13

Wire the Terminal Base Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Connect Wiring to the FLEX I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . 16

Connect Wiring Using a 1794-TB2 or 1794-TB3 Terminal

Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Connect Wiring Using a 1794-TB3G or 1794-TB3GS

Terminal Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Connect Wiring Using a 1794-TB3S, 1794-TB3T, 1794-TB3TS,

or 1794-TBN Terminal Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 3

Write Configuration to and Read Status from Your Module

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Configure Your Analog Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Range Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Safe State Value Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Read Data From Your Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Map Data for the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Publication 1732D-IN004A-EN-E - September 2012

Page 4

iv Table of Contents

Communicate With Your Module

Chapter 4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

About DeviceNet Manager. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Communication Over the I/O Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Polled I/O Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Adapter Input Status Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Appendix A

Specifications

Differences Between Series

Data Tables

Module Programming

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Input Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Output Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

General Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Appendix B

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Appendix C

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Block Transfer Read and Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Appendix D

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Block Transfer Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Sample Programs for FLEX I/O Analog Modules . . . . . . . . . . . . . . . . . . . 67

PLC-2 Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

PLC-3 Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

PLC-5 Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Two’s Complement Binary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Analog Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Scaling Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Example using Compute Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Publication 1732D-IN004A-EN-E - September 2012

Index

Page 5

Preface

Read this preface to familiarize yourself with the rest of the manual. It provides information concerning:

• who should use this manual

• the purpose of this manual

• related documentation

• conventions used in this manual

Who Should Use this Manual

Purpose of this Manual

You must be able to program and operate an Allen-Bradley programmable controller to make efficient use of your FLEX I/O modules. In particular, you must know how to program block transfers.

We assume that you know how to do this in this manual. If you do not, refer to the appropriate programming and operations manual before you attempt to program your modules.

This manual shows you how to use your FLEX I/O Analog modules with Allen-Bradley programmable controllers. The manual helps you install, program and troubleshoot your modules.

For Information About See

Overview of FLEX I/O and Your Analog Module

Install Your FLEX I/O Module Chapter 2

Write Configuration to and Read Status from Your Module Chapter 3

Communicate With Your Module Chapter 4

Specifications Appendix A

Differences Between Series Appendix B

Data Tables Appendix C

Module Programming Appendix D

Chapter 1

About the Vocabulary

v Publication 1794-UM062A-EN-P - September 2012

In this manual, we refer to :

• the analog input or analog output module as the "input module" or "output module"

• the Programmable Controller as the “controller”

Page 6

vi

Related Documentation

The following documents contain additional information concerning Rockwell Automation products. To obtain a copy, contact your local Rockwell Automation office or distributor

Resource Description

1794 FLEX I/O Product Data, publication 1794-PP019

FLEX I/O ControlNet Redundant Media Adapter, publication 1794–5.18

FLEX I/O EtherNet/IP Adapter Module Installation Instructions, publication 1794-IN082

ControlNet Adapter Module Installation Instructions, publication 1794-IN101

FLEX I/O DeviceNet Adapter Module Installation Instructions, publication 1794-IN099

Remote I/O Adapter Module User Manual, publication

1794–UM009

FLEX I/O PROFIBUS Adapter Module Installation Instructions, publication 1794-IN087

FLEX I/O PROFIBUS Adapter Module User Manual, publication 1794-UM057

FLEX I/O Terminal Base Units Installation Instructions, publication 1794-IN092

.

.

.

.

.

.

.

.

. Information on FLEX I/O general product specifications, certifications, and list

of catalogs and descriptions.

Information on how to install the FLEX I/O ControlNet Redundant Media Adapter Catalog No. 1794-ACNR.

Information on how to install the FLEX I/O EtherNet/IP Adapter Module Catalog No. 1794-AENT.

Information on how to install the ControlNet Adapter Modules Catalog No. 1794-ACN15, 1794-ACNR15.

Information on how to install the FLEX I/O DeviceNet Adapter Modules Catalog No. 1794-ADN, 1794-ADNK.

Information on how to use the Remote I/O Adapter Module Catalog No. 1794-ASB.

Information on how to install the FLEX I/O PROFIBUS Adapter Catalog No. 1794-APB.

Information on how to use the FLEX I/O PROFIBUS Adapter Module Catalog No. 1794-APB.

Information on how to install the FLEX I/O Terminal Base Units Catalog No. 1794-TB2, 1794-TB3, 1794-TB3K, 1794-TB3S, 1794-TB32, 1794-TB3G, 1794-TB3GK, 1794-TB3GS, 1794-TB3T, 1794-TB3TS, 1794-TBN, 1794-TBNK, 1794-TBNF.

FLEX I/O Digital Input Modules Installation Instructions, publication 1794-IN093

FLEX I/O Digital DC Sourcing Output Modules Installation Instructions, publication 1794-IN094

FLEX I/O Input/ Output Module Installation Instructions, publication 1794-IN083

FLEX I/O Input and Output Module Installation Instructions, publication 1794-IN100

Thermocouple/Millivolt Input Module Installation Instructions, publication 1794-IN050

FLEX I/O 8 Input RTD Module User Manual, publication 1794-6.5.4

FLEX I/O Thermocouple/Millivolt Input Module User Manual, publication 1794-6.5.7

FLEX I/O AC Input Modules Installation Instructions, publication 1794-IN102

Publication 1794-UM062A-EN-P - September 2012

.

.

.

.

.

.

.

.

Information on how to install the FLEX I/O Digital Modules Catalog No. 1794-IB8, 1794-IB16, 1794-IB16K, 1794-IB32.

Information on how to install the FLEX I/O Digital DC Sourcing Output Modules Catalog No. 1794-OB8, 1794-OB8EP, 1794-OB16, 1794-OB16P, 1794-OB32P.

Information on how to install the FLEX I/O Input and Output Combo Modules Catalog No. 1794-IB16XOB16P, 1794-IB10XOB6.

Information on how to install FLEX I/O Analog Modules Catalog No. 1794-IE8/B, 1794-IE4XOE2/B, 1794-OE4/B, 1794-IE8K/B, 1794-OE4K/B.

Information on how to install the Thermocouple/Millivolt Input Modules Catalog No. 1794-IRT8, 1794-IRT8K, 1794-IRT8XT.

Information on how to use the FLEX I/O 8 Input RTD Module Catalog No. 1794-IR8.

Information on how to use the Thermocouple and Millivolt Input Module Catalog No. 1794-IT8.

Information on how to install the FLEX I/O AC Input Modules Catalog No. 1794-IA8, 1794-IA8I, 1794-IA16.

Page 7

Resource Description

vii

FLEX I/O Digital AC Output Modules Installation Instructions, publication 1794-IN103

Interconnect Cable Installation Instructions, publication 1794-5.12

FLEX I/O DC Power Supply Installation Instructions, publication 1794-IN069

Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1

Allen-Bradley Industrial Automation Glossary, AG-7.1

Common Techniques Used in this Manual

The following conventions are used throughout this manual:

• Bulleted lists such as this one provide information, not procedural steps.

• Numbered lists provide sequential steps or hierarchical information.

• Italic type is used for emphasis.

Information on how to install the FLEX I/O Digital AC Output Modules Catalog No. 1794-OA8, 1794-OA8K, 1794-OA8I, 1794-OA16.

Information on how to install the Interconnect Cable Catalog No. 1794-CE1, 1794-CE3.

Information on how to install the FLEX I/O DC Power Supply Catalog No. 1794-PS13, 1794-PS3.

In-depth information on grounding and wiring Allen-Bradley programmable controllers.

A glossary of industrial automation terms and abbreviations.

Publication 1794-UM062A-EN-P - September 2012

Page 8

viii

Notes:

Publication 1794-UM062A-EN-P - September 2012

Page 9

Chapter

I/O moduleTerminal base

20125

Adapter

1

Overview of FLEX I/O and Your Analog Module

Overview

The FLEX I/O System

Read this chapter to familiarize yourself with configurable features on the FLEX I/O High Density modules. The following table lists where to find specific information in this chapter.

Topic Page

The FLEX I/O System

Types of FLEX I/O Modules 2

How FLEX I/O Analog Modules Communicate with Programmable Controllers

Physical Features of Your Modules 4

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

1

3

• adapter/power supply – powers the internal logic for as many as eight I/O modules

• terminal base – contains a terminal strip to terminate wiring for two- or three-wire devices

• I/O module – contains the bus interface and circuitry needed to perform

1 Publication 1794-UM062A-EN-P - September 2012

specific functions related to your application

Page 10

2 Overview of FLEX I/O and Your Analog Module

Types of FLEX I/O Modules

The following FLEX I/O analog modules are described in this user manual:

FLEX I/0 Analog Modules

Catalog Number Voltage Inputs Outputs Description

1794-IE8 24V DC 8 — analog – 8 input, single-ended,

1794-IE8XT

1794-IE12 24V DC 12 — analog – 12 input, single-ended,

1794-OE4 24V DC — 4 analog – 4 output, single-ended,

1794-OE4XT

1794-OE12 24V DC — 12 analog – 12 output, single-ended,

1794-IE4XOE2 24V DC 4 2 analog – 4 input, single-ended,

1794-IE4XOE2XT

1794-IE8XOE4 24V DC 8 4 analog – 8 input, single-ended,

(1)

Modules with "XT" indicated in the catalog number signify extended temperature modules.

(1)

(1)

(1)

non-isolated

non-isolated

non-isolated

non-isolated

non-isolated and 2 output, single-ended, non-isolated

non-isolated and 4 output, single-ended, non-isolated

FLEX I/O analog input, output and combination modules are block transfer modules that interface analog signals with any Allen-Bradley programmable controllers that have block transfer capability. Block transfer programming moves input from the module’s memory to a designated area in the processor data table, and output data words from a designated area in the processor data table to the module’s memory. Block transfer programming also moves configuration words from the processor data table to module memory.

The analog modules have selectable ranges as shown in the table below:

Analog Module Selectable Ranges

Voltage Current

0…10V DC 0…20 mA

+/- 10V DC 4…20 mA

Publication 1794-UM062A-EN-P - September 2012

Page 11

Overview of FLEX I/O and Your Analog Module 3

ADAPTER

ACTIVE

FAULT

LOCAL FAULT

24VDC

POWER SUPPLY

RIO ADAPTER

1794-ASB

IN 0 IN 2 IN 4 IN 6IN 1 IN 3 IN 5 IN 7

TC RTD INPUT 8 CHANNEL

3

1794-IRT8

PWR

FF F F F F FF

45316

The adapter transfers your configuration data.

FlexBus

External devices transmit analog signals to the module.

The module converts analog signals into binary format and stores these values until the adapter requests their transfer.

The adapter receives data from the modules and stores it in the data table.

The adapter module determine that the transfer was made without error and input values are within specified range.

Your ladder program can use and/or move the data (if valid) before it is written over by the transfer of new data in a subsequent transfer.

1

4

5

6

2

3

New configuration data can be sent to the module any time during operation.

7

1794-ACN15 1794-ACNR15 1794-ADN 1794-AENT 1794-AENTR MicroLogix 1794-ASB 1794-APB

Adapter

1794-AENT shown

How FLEX I/O Analog Modules Communicate with Programmable Controllers

The adapter/power supply transfers data to the module (block transfer write) and from the module (block transfer read) using BTW and BTR instructions in your ladder diagram program. These instructions let the adapter obtain input values and status from the module, and let you send output values and establish the module’s mode of operation. The Typical Communication Between the Adapter

and a Module figure describes the communication process.

Typical Communication Between the Adapter and a Module

Publication 1794-UM062A-EN-P - September 2012

Page 12

4 Overview of FLEX I/O and Your Analog Module

1794-IE8 (1794-IE8XT)

1794-IE12

1794-OE12

OK

-

-

OK

Module type

Removable label

Keyswitch position indicator (#3)

Power on indicator

Module type

Removable label

Keyswitch position indicator (#3)

Power on indicator

Module type

Removable label

Keyswitch position indicator (#4)

Power on indicator

46060

Physical Features of Your Modules

The module label identifies the keyswitch position, wiring and module type. A removable label provides space for writing individual designations per your application. Indicators are provided to identify input fault conditions, and to show when power is applied to the module.

Module Labels and Indicators

Publication 1794-UM062A-EN-P - September 2012

Page 13

Overview of FLEX I/O and Your Analog Module 5

1794-OE4 (1794-OE4XT)

1794-IE4XOE2 (1794-IE4XOE2XT)

1794-IE8XOE4

-

OK

-

OK

-

OK

Module type

Removable label

Keyswitch position indicator (#5)

Power on indicator

Module type

Removable label

Keyswitch position indicator (#5)

Power on indicator

46061

Output designators

Module type

Removable label

Keyswitch position indicator (#4)

Power on indicator

Summary

In this chapter you learned about the FLEX I/O system and the types of analog modules and how they communicate with programmable controllers.

Publication 1794-UM062A-EN-P - September 2012

Page 14

6 Overview of FLEX I/O and Your Analog Module

Notes:

Publication 1794-UM062A-EN-P - September 2012

Page 15

Install Your FLEX I/O Module

Chapter

2

Overview

Before You Install Your Module

This chapter provides you with pre-installation requirements and instructions on how to install your FLEX I/O analog module.

Topic Page

Before You Install Your Module

Power Requirements 7

Install the Module 9

Wire the Terminal Base Unit 15

Connect Wiring to the FLEX I/O Module 16

Before installing your FLEX I/O analog module, you need to:

• Calculate the power requirements of all modules in each chassis,

• verify that a suitable enclosure is available for installation of the module, and

• position the keyswitch on the terminal base.

7

Power Requirements

7 Publication 1794-UM062A-EN-P - September 2012

The wiring of the terminal base unit is determined by the current draw through the terminal base. Make certain that the current draw does not exceed 10 A.

ATTENTION: Total current draw through the terminal base unit is limited to 10 A. Separate power connections may be necessary.

ATTENTION: Do not daisy chain power or ground from the terminal base unit to any AC or DC digital module terminal base unit.

Page 16

8 Install Your FLEX I/O Module

Digital Input

Module

Analog

Module

Analog

Module

Analog

Module

Digital Output

Module

Digital Input

Module

TC/RTD/mV

Module

Analog

Module

TC/RTD/mV

Module

TC/RTD/mV

Module

TC/RTD/mV

Module

TC/RTD/mV

Module

Daisychain

Individual

Combination

24V DC

24V DC

24V DC

24V DC

24V DC 24V DC

45318

Wiring when total current draw is less than 10A

Wiring when total current draw is less than 10A

Total current draw through any base unit must not be greater than 10A

Methods of wiring the terminal base units are shown in the illustration below.

ATTENTION: Note the following rules for each type of wiring configuration:

• Daisychain – AIl modules must be analog or TC/RTD/mV modules for this configuration.

• Individual – Use this type of configuration for any noisy DC digital I/O modules in your system.

• Combination – All modules powered by the same power supply must be analog modules for the combination type of configuration.

Publication 1794-UM062A-EN-P - September 2012

Page 17

Install Your FLEX I/O Module 9

1

2

3

4

6

7

7

8

9

0

45319

Install the Module

Installation of the analog module consists of:

• mounting the terminal base unit

• installing the analog module into the terminal base unit

• installing the connecting wiring to the terminal base unit

If you are installing your module into a terminal base unit that is already installed, proceed to the section, Mount the Analog Module on the Terminal Base Unit page 13

.

, on

Mount on a DIN Rail

ATTENTION: Do not remove or replace a terminal base unit when

power is applied. Interruption of the FlexBus can result in unintended operation or machine motion.

Install the Terminal Base Unit

1. Remove the cover plug in the male connector of the unit to which you are connecting this terminal base unit.

2. Check to make sure that the 16 pins in the male connector on the adjacent device are straight and in line so that the mating female connector on this terminal base unit will mate correctly.

Make certain that the female FlexBus connector is fully retracted into the base unit.

Publication 1794-UM062A-EN-P - September 2012

Page 18

10 Install Your FLEX I/O Module

45320

45321

3. Position the terminal base at a slight angle and hooked over the top of the 35 x 7.5 mm DIN rail A (Allen Bradley part number 199-DR1; 46277-3).

0

9

1

8

7

6

7

2

3

4

4. Slide the terminal base over tight against the adapter (or proceeding terminal base). Make sure the hook on the terminal base slides under the edge of the adapter (or proceeding terminal base) and the FlexBus connector is fully retracted.

5. Rotate the terminal base onto the DIN rail with the top of the rail hooked under the lip on the rear of the terminal base. Use caution to make sure that the female FlexBus connector does not strike any of the pins in the mating male connector.

6. Press down on the terminal base unit to lock the terminal base on the DIN rail. If the terminal base does not lock into place, use a screwdriver or similar device to open the locking tab, press down on the terminal base until flush with the DIN rail and release the locking tab to lock the base in place.

Publication 1794-UM062A-EN-P - September 2012

Page 19

Install Your FLEX I/O Module 11

45322

Gently push the FlexBus connector into the side of the adapter (or proceeding terminal base) to complete the backplane connection.

0

9

1

8

7

6

7

2

3

4

For specific wiring information, refer to the installation instructions for the module you are installing in this terminal base unit.

7. Repeat the above steps to install the next terminal base unit. Ensure that the cover of the FlexBus connector on the last terminal base unit is in place.

Mount on a Panel or Wall

Installation of a FLEX I/O system on a wall or panel consists of:

• laying out the drilling points on the wall or panel.

• drilling the pilot holes for the mounting screws.

• mounting the adapter mounting plate.

• installing the terminal base units and securing them to the wall or panel.

If you are installing your module into a terminal base unit that is already installed, proceed to the section, Mount the Analog Module on the Terminal Base Unit page 13

.

, on

Publication 1794-UM062A-EN-P - September 2012

Page 20

12 Install Your FLEX I/O Module

1

2

3

4

45323

millimeter (inch)

45327

Use the mounting kit Cat. No. 1794-NM1 for panel/wall mounting.

1.4

(35.5)

0

9

1

8

7

6

7

2 3

4

Description Description

1 Mounting plate for adapter 3 Terminal base unit (not included)

2 #6 Self-tapping screws 4 Adapter module (not included)

To install the mounting plate on a wall or panel:

1. Lay out the required points on the wall/panel as shown in the drilling dimension drawing.

Drilling Dimensions for Panel or Wall Mounting of FLEX I/O

Millimeters (Inches)

35.5

(1.4)

58.5

(2.3)

35.5

(1.4)

58.5

(2.3)

21 (0.83)

35.5

(1.4)

Publication 1794-UM062A-EN-P - September 2012

2. Drill the necessary holes for the #6 self-tapping mounting screws.

Page 21

Install Your FLEX I/O Module 13

IMPORTANT

3. Mount the mounting plate for the adapter module using two #6 self-tapping screws (18 included for mounting up to 8 modules and the adapter).

Make certain that the mounting plate is properly grounded to the panel. Refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1

.

4. Hold the adapter at a slight angle and engage the top of the mounting plate in the indention on the rear of the adapter module.

5. Press the adapter down flush with the panel until the locking lever locks.

6. Position the terminal base unit up against the adapter and push the female

bus connector into the adapter.

7. Secure to the wall with two #6 self-tapping screws.

8. Repeat for each remaining terminal base unit.

Mount the Analog Module on the Terminal Base Unit

The analog module mounts on a 1794-TBx terminal base unit. More specific terminal bases, see Module and Terminal Base Unit Compatibility

1. Rotate keyswitch (3) on terminal base unit (4) clockwise to the position required for your module, see table Keyswitch Positions for Your Module

on page 13.

Do not change the position of the keyswitch after wiring the terminal base unit.

Keyswitch Positions for Your Module

Module Keyswitch Position

1794-IE8 3

1794-IE8XT

1794-IE12

1794-OE12 4

1794-OE4

1794-OE4XT

1794-IE4XOE2 5

1794-IE4XOE2XT

on page 16.

1794-IE8XOE4

Publication 1794-UM062A-EN-P - September 2012

Page 22

14 Install Your FLEX I/O Module

1

2

3

4 5

6

7

8

Label here or under here

40231

Description Description

1 FlexBus connector 5 Base unit

2 Latching mechanism 6 Alignment groove

3 Keyswitch 7 Alignment bar

4 Cap plug 8 Module

2. Make certain the FlexBus connector (1) is pushed all the way to the left to connect with the neighboring terminal base or adapter. You cannot install the module unless the connector is fully extended.

3. Make sure the pins on the bottom of the module are straight so they will align properly with the connector in the terminal base unit.

ATTENTION: If you remove or insert the module while the 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.

4. Position the module (8) with its alignment bar (7) aligned with the groove (6) on the terminal base.

Publication 1794-UM062A-EN-P - September 2012

5. Press firmly and evenly to seat the module in the terminal base unit. The module is seated when the latching mechanism is locked into the module.

Page 23

Install Your FLEX I/O Module 15

IMPORTANT

1794-TB2

1794-TB3

A

B

C

0...15

34, 51

16...33

A

B

C

34 and 50 = 24V DC 35 and 51 = common 16, 33 = chassis ground

45328

34 and 50 = 24V DC 35 and 51 = common 16, 33, 38 = chassis ground 40…45, 47 = chassis ground

0123456789101112131415

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51

A

B

C

A

B

C

1794-TB3G

1794-TB3GS

0...15

34...51

16...33

0 1 2 3 4 5 6 7 8 9 101112131415

18 19 20 21 22 23 3324 25 26 27 28 29 30 31 3217

35 36 37 38 47 48 49 5034 51

16

39 40 41 42 43 44 45 46

Label placed at top of wiring area

34 and 50 = 24V DC 35 and 51 = common 16 and 33 = chassis ground 40…45 = chassis ground

35 and 51 = common 34 and 50 = 24V DC 16 and 33 = chassis ground 40…45 = chassis ground

45328

6. Remove cap plug and attach another terminal base unit to the right of this terminal base unit if required. Make sure the last terminal base has the cap plug in place.

The adapter is capable of addressing eight modules. Do not exceed a maximum of eight terminal base units in your system.

Wire the Terminal Base Unit

Wiring to the analog modules is made through the terminal base unit on which the module mounts.

1794-TB2 and 1794-TB3 Wiring

1794-TB3G and 1794-TB3GS Wiring

ATTENTION: Total current draw through the terminal base unit is

limited to 10A. Separate power connections to the terminal base unit may be necessary.

Publication 1794-UM062A-EN-P - September 2012

Page 24

16 Install Your FLEX I/O Module

Connect Wiring to the FLEX I/O Module

Module and Terminal Base Unit Compatibility

Module 1794-TB2 1794-TB3 1794-TB3S 1794-TB3G 1794-TB3GS 1794-TB3T 1794-TB3TS TBN

1794-IE8 Yes Yes No No No No No No

1794-IE8XT Yes Yes Yes No No Yes Yes No

1794-IE12 No No No Yes Yes No No No

1794-OE12 No No No Yes Yes No No No

1794-OE4 Yes Yes No No No No No No

1794-OE4XT Yes Yes Yes No No Yes Yes Yes

1794-IE4XOE2 Yes Yes No No No No No No

1794-IE4XOE2XT Yes Yes Yes No No Yes Yes No

1794-IE8XOE4 No No No Yes Yes No No No

Wiring to the analog module is made through the terminal base unit on which the module mounts.

Verify which terminal base units your module is compatible with in table Module

and Terminal Base Unit Compatibility on page 16.

Connect Wiring Using a 1794-TB2 or 1794-TB3 Terminal Base Unit

1. Connect the individual signal wiring to numbered terminals on the 0…15 row (A) on the terminal base unit. Use Belden 8761 cable for signal wiring.

ATTENTION: Connect only one current or one voltage signal per channel. Do not connect both current and voltage on one channel.

2. Connect each channel signal return to:

• 1794-IE8 – the associated terminal on row (B).

• 1794-OE4 – the corresponding terminal on the same row (A).

• 1794-IE4XOE2 – inputs: the associated terminal on row (B); outputs: the corresponding terminal on the same row (A).

3. Connect +24V DC to designated terminals on the 34…51 row (C), and 24V common to designated terminals on the 16…33 row (B).

ATTENTION: To reduce susceptibility to noise, power analog modules and discrete modules from separate power supplies. Do not exceed a length of 10 m (33 ft) for power cabling.

Publication 1794-UM062A-EN-P - September 2012

If daisy chaining the +24V DC power to the next base unit, connect a jumper from terminal 51 on this base unit to terminal 34 on the next base unit. Connect

Page 25

Install Your FLEX I/O Module 17

the 24V DC common/return from terminal 33 on this base unit to terminal 16 on the next base unit.

Wire Connections for 1794-TB2, and 1794-TB3 using the 1794-IE8 Module

Channel Signal Type Label

Markings

1794-TB2 and 1794-TB3

Input Common Terminal

Input 0 Current I A-0 B-17

Voltage V A-1 B-18

Input 1 Current I A-2 B-19

Voltage V A-3 B-20

Input 2 Current I A-4 B-21

Voltage V A-5 B-22

Input 3 Current I A-6 B-23

Voltage V A-7 B-24

Input 4 Current I A-8 B-25

Voltage V A-9 B-26

Input 5 Current I A-10 B-27

Voltage V A-11 B-28

Input 6 Current I A-12 B-29

Voltage V A-13 B-30

Input 7 Current I A-14 B-31

Voltage V A-15 B-32

24V DC common

B-16…33

(1)

+24V DC power 1794-TB2 – C-34…51

1794-TB3 – C-34…51

(1)

Terminals 16…33 are internally connected in the terminal base unit.

Wire Connections for 1794-TB2, and 1794-TB3 using the 1794-OE8 Module

Channel Signal Type Label

Markings

1794-TB2 and 1794-TB3

Output

Output 1 Current signal I A-0

Current common RET

A-1

(1)

Voltage signal V A-2

Voltage common RET

A-3

(1)

Current signal I A-4

Current common RET

A-5

(1)

Voltage signal V A-6

Voltage common RET

Publication 1794-UM062A-EN-P - September 2012

A-7

(1)

Page 26

18 Install Your FLEX I/O Module

Wire Connections for 1794-TB2, and 1794-TB3 using the 1794-OE8 Module

Channel Signal Type Label

Markings

Current signal I A-8

Current common RET

Voltage signal V A-10

Voltage common RET

Current signal I A-12

Current common RET

Voltage signal V A-14

Voltage common RET

24V DC common

+24V 1794-TB2 – C-34…51

1794-TB3 – C-34…51

(1)

Terminals 1, 3, 5, 7, 9, 11, 13 and 15 are connected in the terminal base unit.

(2)

Terminals 16…33 are internally connected in the terminal base unit.

1794-TB2 and 1794-TB3

Output

(1)

A-9

(1)

A-11

(1)

A-13

(1)

A-15

B-16…33

(2)

Publication 1794-UM062A-EN-P - September 2012

Page 27

Install Your FLEX I/O Module 19

Wire Connections for 1794-TB2, and 1794-TB3 using the 1794-IE4XOE2 Module

Channel Signal Type Label

Markings

1794-TB2 and 1794-TB3

Signal Common Terminal

Input 0 Current I 0 17

Voltage V 1 18

Input 1 Current I 2 19

Voltage V 3 20

Input 2 Current I 4 21

Voltage V 5 22

Input 3 Current I 6 23

Voltage V 7 24

Output 0 Current signal I 8

Current common RET

(2)

9

Voltage signal V 10

Voltage common RET

11

(2)

Output 1 Current signal I 12

Current common V

13

(2)

Voltage signal I 14

Voltage common V

24V DC Common

16…33

(1)

15

(2)

+24V DC Power 1794-TB2 – 34…51

1794-TB3 – 34…51

(1)

Terminals 16…33 are internally connected in the terminal base unit.

(2)

Terminals 9, 11, 13, and 15 are internally connected in the module to 24V DC common.

Connect Wiring Using a 1794-TB3G or 1794-TB3GS Terminal Base Unit

1. Connect individual signal wiring to numbered terminals on 0…15 row (A), and 17…32 row (B) for 1794-TB3G and 1794-TB3GS as indicated in the following tables.

2. Connect any signal wiring shields to functional ground as near as possible to the module. 1794-TB3G and 1794-TB3GS only: Connect to earth ground terminals B16, B33, C38, C40…C45 and C47.

3. Connect the -V DC common (return) to terminal 35 on the 34…51 row (C).

Publication 1794-UM062A-EN-P - September 2012

Page 28

20 Install Your FLEX I/O Module

4. If daisy chaining +V power to the next terminal base unit, connect a jumper from terminal 50 (+VDC power) on this base unit to the +VDC terminal on the next terminal base unit, and connect a jumper from terminal 51 (-VDC common) on this base unit to the common terminal on the next terminal base unit.

5. If continuing -V common to the next terminal base unit, connect a jumper from terminal 51 (-VDC common) on this base unit to the to the common terminal on the next terminal base unit.

Wire Connections for 1794-TB3G, and 1794-TB3GS using the 1794-IE12 Module

Channel Signal Type Label

Markings

Input 0 Current I A-0 B-17

Voltage V A-1

Input 1 Current I A-2 B-18

Voltage V A-3

Input 2 Current I A-4 B-23

Voltage V A-5

Input 3 Current I A-6 B-24

Voltage V A-7

Input 4 Current I A-8 B-25

Voltage V A-9

Input 5 Current I A-10 B-26

Voltage V A-11

Input 6 Current I A-12 B-31

Voltage V A-13

Input 7 Current I A-14 B-32

Voltage V A-15

1794-TB3G and 1794-TB3GS

Input Common Terminal

Publication 1794-UM062A-EN-P - September 2012

Input 8 Current I B-19 C-37

Voltage V B-20

Input 9 Current I B-21 C39

Voltage V B-22

Input 10 Current I B-27 C-46

Voltage V B-28

Input 11 Current I B-29 C-48

Voltage V B-30

Page 29

Install Your FLEX I/O Module 21

Wire Connections for 1794-TB3G, and 1794-TB3GS using the 1794-IE12 Module

Channel Signal Type Label

Markings

24V DC common

1794-TB3G – C-35, C-51

1794-TB3G and 1794-TB3GS

Input Common Terminal

(1)

1794-TB3GS – C-35, C-51

+24V DC power

1794-TB3G – C-34, C-50

(2)

1794-TB3GS – C-34, C-50

Chassis ground (Shield)

(1)

Terminals C-35 and C-51 are internally connected in the terminal base unit.

(2)

Terminals C-34 and C-50 are internally connected in the terminal base unit.

(3)

Terminals B-16, B-33, C-38, C-40 through C- 45, and C-47 are internally connected to chassis ground

1794-TB3G – B-16, B-33, C-38, C-40…45, C-47 1794-TB3GS – B-16, B-33, C-38, C-40…45, C-47

Wire Connections for 1794-TB3G, and 1794-TB3GS using the 1794-OE12 Module

Channel Signal Type Label

Markings

Output 0 Current I A-0 B-17

Voltage V A-1

Output 1 Current I A-2 B-18

1794-TB3G and 1794-TB3GS

Output Common Terminal

(3)

Voltage V A-3

Output 2 Current I A-4 B-23

Voltage V A-5

Output 3 Current I A-6 B-24

Voltage V A-7

Output 4 Current I A-8 B-25

Voltage V A-9

Output 5 Current I A-10 B-26

Voltage V A-11

Output 6 Current I A-12 B-31

Voltage V A-13

Output 7 Current I A-14 B-32

Voltage V A-15

Output 8 Current I B-19 C-37

Voltage V B-20

Output 9 Current I B-21 C39

Voltage V B-22

Publication 1794-UM062A-EN-P - September 2012

Page 30

22 Install Your FLEX I/O Module

Wire Connections for 1794-TB3G, and 1794-TB3GS using the 1794-OE12 Module

Channel Signal Type Label

Markings

1794-TB3G and 1794-TB3GS

Output Common Terminal

Output 10 Current I B-27 C-46

Voltage V B-28

Output 11 Current I B-29 C-48

Voltage V B-30

24V DC common

1794-TB3G – C-35, C-51

(1)

1794-TB3GS – C-35, C-51

+24V DC power

1794-TB3G – C-34, C-50

(2)

1794-TB3GS – C-34, C-50

Chassis ground (Shield)

(1)

Terminals C-35 and C-51 are internally connected in the terminal base unit.

(2)

Terminals C-34 and C-50 are internally connected in the terminal base unit.

(3)

Terminals B-16, B-33, C-38, C-40 through C- 45, and C-47 are internally connected to chassis ground

1794-TB3G – B-16, B-33, C-38, C-40…45, C-47 1794-TB3GS – B-16, B-33, C-38, C-40…45, C-47

Wire Connections for 1794-TB2, and 1794-TB3 using the 1794-IE8XOE4 Module

(3)

Channel Signal Type Label

Marking

1794-TB3G or 1794-TB3GS

Input/Output Common Terminal

Input 0 Current I0 A-0 B-17

Voltage V0 A-1

Input 1 Current I1 A-2 B-18

Voltage V1 A-3

Input 2 Current I2 A-4 B-23

Voltage V2 A-5

Input 3 Current I3 A-6 B-24

Voltage V3 A-7

Input 4 Current I4 A-8 B-25

Voltage V4 A-9

Input 5 Current I5 A-10 B-26

Voltage V5 A-11

Input 6 Current I6 A-12 B-31

Voltage V6 A-13

Input 7 Current I7 A-14 B-32

Voltage V7 A-15

Publication 1794-UM062A-EN-P - September 2012

Page 31

Install Your FLEX I/O Module 23

Wire Connections for 1794-TB2, and 1794-TB3 using the 1794-IE8XOE4 Module

Channel Signal Type Label

Marking

Output 0 Current I8 B-19 C-37

Voltage V8 B-20

Output 1 Current I9 B-21 C-39

Voltage V9 B-22

Output 2 Current I10 B-27 C-46

Voltage V10 B-28

Output 3 Current I11 B-29 C-48

Voltage V11 B-30

-V DC Common 1794-TB3G and 1794-TB3GS – Terminals C-35 and C-51 are internally

connected in the terminal base unit.

+V DC Power 1794-TB3G and 1794-TB3GS –Terminals C-34 and C-50 are internally

connected in the terminal base unit.

Chassis Ground (Shield)

1794-TB3G and 1794-TB3GS – Terminals B-16, B-33, C-38, C-40 through C- 45, and C-47 are internally connected to chassis ground.

1794-TB3G or 1794-TB3GS

Input/Output Common Terminal

Connect Wiring Using a 1794-TB3S, 1794-TB3T, 1794-TB3TS, or 1794-TBN Terminal Base Unit

1. Connect individual input/output wiring to numbered terminals on the 0…15 row (A) for 1794-TB3S, 1794-TB3T and 1794-TB3TS, or on row (B) for the 1794-TBN as indicated in the following tables.

2. Connect channel common/return to the associated terminal on row (A) or row (B) for the 1794-TB3S, 1794-TB3T and 1794-TB3TS, or on row (C) for the 1794-TBN. For input devices requiring terminal base power, connect the channel power wiring to the associated terminal on row (C).

3. Connect any signal wiring shields to functional ground as near as possible to the module.

1794-TB3T or -TB3TS only: Connect to earth ground terminals C-39…C-46.

4. Connect the +V DC power to terminal 34 on the 34…51 row (C) and -V common/return to terminal 16 on the (B) row.

5. If daisychaining +V power to the next terminal base, connect a jumper from terminal 51 (+V DC) on this base unit to terminal 34 on the next base unit.

Publication 1794-UM062A-EN-P - September 2012

Page 32

24 Install Your FLEX I/O Module

Wire Connections for 1794-TB3S, 1794-TB3T and 1794-TB3TS using the 1794-IE8XT Module

6. If continuing DC common (-V) to the next base unit, connect a jumper from terminal 33 (common) on this base unit to terminal 16 on the next base unit.

Channel Signal Type Label

Markings

1794

-TB3S,

-TB3T,

1794-TB3S 1794-TB3S 1794

-TB3T

-TB3TS

-TB3TS

Input

Power

(1)

Common Terminal Shield

Input 0 Current I A-0 C-35 B-17 B-17 C-39

Voltage V A-1 C-36 B-18

Input 1 Current I A-2 C-37 B-19 B-18 C-40

Voltage V A-3 C-38 B-20

Input 2 Current I A-4 C-39 B-21 B-21 C-41

Voltage V A-5 C-40 B-22

Input 3 Current I A-6 C-41 B-23 B-23 C-42

Voltage V A-7 C-42 B-24

Input 4 Current I A-8 C-43 B-25 B-25 C-43

Voltage V A-9 C-44 B-26

Input 5 Current I A-10 C-45 B-27 B-27 C-44

Voltage V A-11 C-46 B-28

Input 6 Current I A-12 C-47 B-29 B-29 C-45

Voltage V A-13 C-48 B-30

Input 7 Current I A-14 C-49 B-31 B-31 C-46

Voltage V A-15 C-50 B-32

24V DC common

1794-TB3S – Terminals 16…33 are internally connected in the terminal base unit. 1794-TB3T, 1794TB3TS- – Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31 and 33 are internally connected in the terminal base unit.

+24V DC power

1794-TB3S – Terminals 34…51 are internally connected in the terminal base unit. 1794-TB3T, 1794-TB3TS – Terminals 34, 35, 50 and 51 are internally connected in the terminal base unit.

Chassis

1794-TB3T, 1794-TB3TS – Terminals 39…46 are internally connected to chassis ground. ground (Shield)

(1)

Use when transmitter requires terminal base power.

Publication 1794-UM062A-EN-P - September 2012

Page 33

Install Your FLEX I/O Module 25

Wire Connections for 1794-TB3S, 1794-TB3T and 1794-TB3TS using the 1794-OE8XT Module

Channel Signal Type Label

Markings

1794-TB3S, 1794-TB3T, 1794-TB3TS

Output Terminal

(1)

Shield 1794-TB3T,

1794-TBN

Output Term in al

1794-TB3TS

Output 0 Current I A-0 C-39 B-0

Current I RET A-1 C-1

Voltage V A-2 C-40 B-2

Voltage V RET A-3 C-3

Output 1 Current I A-4 C-41 B-4

Current I RET A-5 C-5

Voltage V A-6 C-42 B-6

Voltage V RET A-7 C-7

Output 2 Current I A-8 C-43 B-8

Current I RET A-9 C-9

Voltage V A-10 C-44 B-10

Voltage V RET A-11 C-11

Output 3 Current I A-12 C-45 B-12

Current I RET A-13 C-13

(2)

Voltage V A-14 C-46 B-14

Voltage V RET A-15 C-15

24V DC common

1794-TB3S – Terminals 16…33 are internally connected in the terminal base unit. 1794-TB3T, 1794TB3TS- – Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31 and 33 are internally connected in the terminal base unit.

+24V DC power

1794-TB3S – Terminals 34…51 are internally connected in the terminal base unit. 1794-TB3T, 1794-TB3TS – Terminals 34, 35, 50 and 51 are internally connected in the terminal base unit.

Chassis ground

1794-TB3T, 1794-TB3TS – Terminals 39…46 are internally connected to chassis ground.

(Shield)

(1)

1A-1, 3, 5, 7, 9, 11, 13 and 15 are internally connected in the module to 24V DC common.

(2)

2C-1, 3, 5, 7, 9, 11, 13 and 15 are internally connected in the module to 24V DC common

Publication 1794-UM062A-EN-P - September 2012

Page 34

26 Install Your FLEX I/O Module

Wire Connections for 1794-TB3S, 1794-TB3T and 1794-TB3TS using the 1794-IE4XOE2XT Module

Channel Signal

Ty pe

Label Markings

1794

-TB3S,

1794-TB3S 1794-TB3S 1794-TB3T,

1794-TB3TS

-TB3T,

-TB3TS

Input/Output Term in al

(1)

Power Terminal

Common Terminal Shield

(2)

Input 0 Current I A-0 C-35 B-17 B-17 C-39

Voltage V A-1 C-36 B-18

Input 1 Current I A-2 C-37 B-19 B-18 C-40

Voltage V A-3 C-38 B-20

Input 2 Current I A-4 C-39 B-21 B-21 C-41

Voltage V A-5 C-40 B-22

Input 3 Current I A-6 C-41 B-23 B-23 C-42

Voltage V A-7 C-42 B-24

Output 0 Current I A-8

C-43

Voltage RET A-9

VA-10 C-44

RET A-11

Output 1 Current I A-12 C-45

Voltage RET A-13

VA-14 C-46

24V DC common

+24V DC power

Chassis ground (Shield)

(1)

(2)

Chapter Summary

RET A-15

1794-TB3S – Terminals 16…33 are internally connected in the terminal base unit. 1794-TB3T, 1794TB3TS- – Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31 and 33 are internally connected in the terminal base unit.

1794-TB3S – Terminals 34…51 are internally connected in the terminal base unit. 1794-TB3T, 1794-TB3TS – Terminals 34, 35, 50 and 51 are internally connected in the terminal base unit.

1794-TB3T, 1794-TB3TS – Terminals 39…46 are internally connected to chassis ground.

A-9, 11, 13 and 15 are internally connected in the module to 24V DC common.

Use when transmitter requires terminal base power.

In this chapter you learned how to install the FLEX I/O analog module in an existing programmable controller system and how to wire to a terminal base unit.

Publication 1794-UM062A-EN-P - September 2012

Page 35

Chapter

3

Write Configuration to and Read Status from Your Module

Overview

Configure Your Analog Module

This chapter describes how to configure, read data from, and map data to your FLEX I/O analog module.

Topic Page

Configure Your Analog Module

Range Selection 28

Safe State Value Selection 28

Data Format 28

Read Data From Your Module 28

Map Data for the Module 29

Because of the many analog devices available and the wide variety of possible configurations, you must configure your module to conform to the analog device and specific application that you have chosen. The module is configured using a group of data table words that are transferred to the module using a block transfer write instruction.

The software configurable features available are:

• input/output range selection

• safe state operating value (customer selected analog values the module will maintain in the event of a network communication error)

27

ATTENTION: PLC-5 family programmable controllers that use 6200 software programming tools can take advantage of the IOCONFIG utility to configure these modules. IOCONFIG uses menu-based screens for configuration without having to set individual bits in particular locations. Refer to your 6200 software literature for details.

Page 36

28 Write Configuration to and Read Status from Your Module

Range Selection

Individual input channels are configurable to operate with the following voltage or current ranges.

Voltage and Current Ranges

Ranges Bit Settings

Configure Select Full Range

0…10V DC / 0…20 mA 0 1

4…20 mA 1 0

-10…+10V DC 1 1

(1)

Off

(1)

When configured to OFF, individual output channels drive 0V or 0 mA.

ATTENTION: If using Series A modules, do not use configure select and full range bit settings of 0. Individual channels revert to 4…20 mA with bit selections of all zeroes. This could result in unwanted or incorrect action.

00

You can select individual channel ranges using the designated words of the write block transfer instruction. See the Word/Bit Descriptions for your particular module for word and bit numbers.

Safe State Value Selection

Data Format

Read Data From Your Module

You can select the analog values that your output module maintains in the event of a network communication error. When the multiplex control bits (M) are cleared simultaneously by a communication error, (or by the user), the analog outputs automatically switch to the values set in the safe state analog words. This allows you to define a safe operating state for controlled devices which depend on the analog output from the module.

The data returned from the analog-to-digital converter in the module is 12-bit resolute. This value is left-justified into a 16-bit field, reserving the most significant bit for a sign bit. The 4…20 mA mode scales in the module and uses all 16 bits.

For more information on values for various current and voltage modes, and an example of scaling to engineering terms, see Module Programming

on page 67.

Read programming transmits status and data from the analog module to the processor data table in one I/O scan. The processor user program initiates the request to the transfer data from the analog module to the processor.

Publication 1794-UM062A-EN-P - September 2012

Page 37

Write Configuration to and Read Status from Your Module 29

Map Data for the Module

Chapter Summary

Read and write words and bit/word descriptions describe the information written to and read from the analog modules. Each word is composed of 16 bits. For a complete list of data for your specific module, see Data Tables

In this chapter you learned about data and instructions to configure and map your FLEX I/O High-Density Analog Modules.

on page 43.

Publication 1794-UM062A-EN-P - September 2012

Page 38

30 Write Configuration to and Read Status from Your Module

Notes:

Publication 1794-UM062A-EN-P - September 2012

Page 39

Communicate With Your Module

1123

16-point Discrete Input Module

Chapter

4

Overview

About DeviceNet Manager

Communication Over the I/O Backplane

Read this chapter to familiarize yourself with configurable features on the input and output analog modules

For Information About See Page

About DeviceNet Manager

Communication Over the I/O Backplane 31

Polled I/O Structure 32

Defaults 33

DeviceNet Manager is a software tool used to configure your FLEX I/O DeviceNet adapter and its related modules. This software tool can be connected to the adapter via the DeviceNet network.

You must know and understand how DeviceNet Manager works in order to add a device to the network. Refer to the DeviceNet Manager software online help for more information on using DeviceNet Manager software.

A FLEX I/O adapter communicates to other network system components over the network. The adapter communicates with its I/O modules over the backplane.

31

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 0 or more. The length of each I/O module’s read words and write words vary 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.

For example, a 16 point discrete input module will have up to 2 read words and 1 write word.

Delay

Delay

Time

Time

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

Page 40

32 Communicate With Your Module

46062

15Bit: 01234567810 through 15

I/O Module Fault Bits

Node Address Changed Bit

Slot 0

Slot 1

Slot 2

Slot 3

Slot 4

Slot 5

Slot 6

Slot 7

9

I/O State Bit

Not Used

46063

Polled I/O Structure

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 installed I/O modules. The Input data from Slot 0 is first after the status word, followed by Input data from Slot 2, and so on to slot 7.

Network

Network WRITE

READ

FLEX I/O adapter

Read data

Adapter

status

Slot 0 input data

Slot 1 input data

...

Slot 7 input data

Write 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

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 status — 1 bit

Publication 1794-UM062A-EN-P - September 2012

Page 41

Communicate With Your Module 33

The adapter input status word bit descriptions are shown in table Word Bit Description on page 33.

Word Bit Description

Bit Description Bit Explanation

I/O module fault 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.

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.

Defaults

Node address changed

I/O state 9 Bit = 0 – idle

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

been changed since power up.

Bit = 1 – run

10…15 Not used – sent as zeroes.

Possible causes for an I/O module fault are:

• transmission errors on the FLEX I/O backplane

•a failed module

• a module removed from its terminal base

• incorrect module inserted in a slot position

•the slot is empty

The node address changed bit is set when the node address switch setting has been changed since power up. The new node address does not take effect until the adapter has been powered down and then powered back up. Until this power cycling occurs, the node address switches will not match the actual node address.

Each I/O module has default values associated with it. At default, each module generates inputs/status and expects outputs/configuration.

Module Default Values

Module Defaults for: Factory Defaults Real Time Size

Catalog Number

1794-IE8/B 8-pt Analog Input 9 6 8 0

1794-IE8XT 8-pt Analog Input 9 6 8 0

1794-IE12 12-pt Analog Input 13 2 12 1

1794-OE4/B 4-pt Analog Output 1 14 0 4

Publication 1794-UM062A-EN-P - September 2012

Description Input

Default

Output Default

Input Default

Output Default

Page 42

34 Communicate With Your Module

Module Default Values

Module Defaults for: Factory Defaults Real Time Size

Catalog Number

1794-OE4XT 4-pt Analog Output 1 14 0 4

1794-OE12 12-pt Analog Output 1 14 0 13

1794-IE4XOE2 4 in/2 out Analog Combo 5 10 4 2

1794-IE4XOE2XT 4 in/2 out Analog Combo 5 10 4 2

1794-IE8XOE4 8 in/4 out Analog Combo 9 6 8 5

Description Input

Default

Output Default

Input Default

Output Default

Factory defaults are the values assigned by the adapter when you:

• first power up the system, and

• no previous stored settings have been applied.

For analog modules, the defaults reflect the actual number of input words/output words. For example, for the 8 input analog module, you have 9 input words, and 6 output words.

Chapter Summary

You can change the I/O data size for a module by reducing the number of words mapped into the adapter module, as shown in real time size.

Real time size is the setting that provides optimal real time data to the adapter module.

Analog modules have 15 words assigned to them. This is divided into inputs words and output words. You can reduce the I/O data size to fewer words to increase data transfer over the backplane. For example, an 8 input analog module has 9 words input and 6 words output with factory default. You can reduce the input words to 8 by not using the underrange settings set in Word 9. Likewise, you can reduce the write words to 0, thus eliminating the configuration setting and unused words.

For information on using DeviceNet Manager software, refer to the DeviceNet Manager Software help.

This chapter explained how to communicate with your module.

Publication 1794-UM062A-EN-P - September 2012

Page 43

Specifications

Appendix A

Overview

This Appendix lists all input, output, general and environment specifications, as well as certifications for the following FLEX I/O Analog Modules: 1794-IE8, 1794-IE8XT, 1794-IE12, 1794-OE4, 1794-OE4XT, 1794-OE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4.

Input Specifications

The following are input specifications for the FLEX I/O analog input and combination modules.

Input Specifications – 1794-IE8, 1794-IE8XT, 1794-IE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4 Analog Input Modules

Specification 1794-IE12 1794-IE8XOE4 1794-IE8, 1794-IE8XT 1794-IE4XOE2,

1794-IE4XOE2XT

Number of inputs 12 single-ended,

non-isolated

Resolution Voltage Current

Conversion type Successive approximation

Conversion rate, all channels

Input current terminal (user configurable)

Input voltage terminal (user configurable)

320 μV/cnt

0.641 μA/cnt

8.0 ms 256 μs

4…20 mA 0…20 mA

±10V 0…10V

8 single-ended, non-isolated 4 single-ended,

non-isolated

2.56 mV/cnt unipolar; 5.13 mV/cnt bipolar

5.13 μA/cnt

Normal mode rejection ratio voltage terminal

current terminal

Step response to 63% voltage terminal current terminal

35 Publication 1794-UM062A-EN-P - September 2012

-3 db @ 0.05 Hz; -20 db/decade

-52 db @ 50 Hz: -54 db @ 60 Hz

-3 db @ 1.5 Hz: -20 db/decade

-29 db @ 50 H

1.3 s

0.09 s

-3 db @ 17 Hz; -20 db/decade

-10.0 dB @ 50 Hz, -11.4 dB @ 60 Hz

-3 db @ 9 Hz; -20 db/decade

-15.3 dB @ 50 Hz, -16.8 dB @ 60 Hz

9.4 ms

18.2 ms

Page 44

36 Specifications

Input Specifications – 1794-IE8, 1794-IE8XT, 1794-IE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4 Analog Input Modules

Specification 1794-IE12 1794-IE8XOE4 1794-IE8, 1794-IE8XT 1794-IE4XOE2,

1794-IE4XOE2XT

Input Impedance Voltage Terminal Current Terminal

> 1 MΩ < 100 Ω

(1)

238 Ω

100 kΩ

Absolute accuracy Voltage Terminal Current Terminal

0.1% Full scale @ 25 °C

0.1% Full scale @ 25 °C

0.29% Full scale @ 25 °C

0.29% Full scale @ 25 °C

Accuracy Drift with Temperature Voltage Terminal Current Terminal

0.00428% Full scale/°C

0.00407% Full scale/°C

Max overload 30V continuous or 32 mA continuous,

one channel at a time

(1)

If 24V DC is removed from the module, input resistance is <100 Ω. This is also true at 0 mA current input, even if there is 24V DC. If there is an input current applied, input

resistance is >1 M

Ω.

Output Specifications

The following are output specifications for the FLEX I/O analog output and combination modules.

Output Specifications – 1794-OE4, 1794-OE4XT, 1794-OE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4

Specification 1794-OE12 1794-IE8XOE4 1794-OE4, 1794-OE4XT 1794-IE4XOE2,

1794-IE4XOE2XT

Number of outputs 12 single-ended,

non-isolated

Output voltage range, nom ±10V

Output current, max 0…20 mA

Voltage output current

3 mA

load, max

Voltage resolution 320 μV/cnt 2.56 μV/cnt

Current resolution 0.641 μA/cnt 5.13 μA/cnt

Absolute accuracy Voltage Terminal Current Terminal

0.1% Full scale @ 25%

0.1% Full scale @ 25%

Accuracy Drift with Temperature Voltage Terminal Current Terminal

0.004% Full scale/° C

0.004% Full scale/° C

Resistive load, mA output 0…750 Ω @ 24V DC 15…750 Ω @ 24V DC

4 single-ended, non-isolated 2 single-ended,

non-isolated

0.133% Full scale @ 25%

0.425% Full scale @ 25%

0.0045% Full scale/° C

0.0069% Full scale/° C

Publication 1794-UM062A-EN-P - September 2012

Page 45

General Specifications

The following are general specifications common to all the FLEX I/O analog modules in this publication.

Output Specifications – 1794-OE4, 1794-OE4XT, 1794-OE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4

Specifications 37

Specification 1794-IE12, 1794-OE12,

1794-IE8XOE4

Module location 1794-TB3G

1794-TB3GS

Keyswitch position 1794-IE12

3

1794-OE12

4

1794-IE8XOE4

5

Dimensions, approx. (HxWxD)

Calibration None required

Indicators 1 green/red power/status indicator 1 green power indicator

Data format 16 bit 2’s complement, left justified

External DC power supply, nom

94.0 x 94.0 x 53.3 mm (3.7 x 3.7 x 2.1 in.)

24V DC

1794-IE8, 1794-IE8XT, 1794-OE4, 1794-OE4XT,1794-IE4XOE2, 1794-IE4XOE2XT

1794-TB2 1794-TB3 1794 -TB3S 1794-TB3T 1794-TB3TS

For 1794-OE4, 1794-OE4XT only

1794-TBN

1794-IE8, 1794-IE8XT

3

1794-OE4, 1794-OE4XT

4

1794-IE4XOE2, 1794-IE4XOE2XT

5

45.7 x 94.0 x 53.3 mm (1.8 x 3.7 x 2.1 in.)

External DC power supply, voltage range

External DC power supply, current

FlexBus current 80 mA 70 mA

Isolation voltage 50V continuous

10.0…31.2V DC (includes 5% AC ripple)

1794-IE12

30 mA @ 24V DC; 45 mA @ 10V DC

1794-OE12

320 mA @ 24V DC; 720 mA @ 10V DC

1794-IE8XOE4

140 mA @ 24V DC; 280 mA @ 10V DC

Tested at 850V DC for 60 s between user power to system No isolation between individual channels

Publication 1794-UM062A-EN-P - September 2012

19.2…31.2V DC (includes 5% AC ripple)

70 mA @ 24V DC

1794-IE8, 1794-IE8XT

60 mA @ 24V DC

60 mA – For 1794-IE8, 1794-IE8XT only

50V continuous Tested @ 850V DC for 1 s between user power to system No isolation between individual channels

150 mA @ 12V DC

Page 46

38 Specifications

Output Specifications – 1794-OE4, 1794-OE4XT, 1794-OE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4

Specification 1794-IE12, 1794-OE12,

1794-IE8XOE4

Power dissipation, max. 1794-IE12

1.2 W @ 31.2V DC

1.1 W @ 24V DC

0.9 W @ 10.0V DC

1794-IE8, 1794-IE8XT, 1794-OE4, 1794-OE4XT,1794-IE4XOE2, 1794-IE4XOE2XT

1794-IE8

4.0 W @ 31.2V DC

3.0 W @ 31.2V DC

1794-OE8

4.5 W @ 31.2V DC

1794-OE12

4.0 W @ 31.2V DC

4.3 W @ 24V DC

4.0 W @ 10.0V DC

1794-IE8XOE4

3.0 W @ 31.2V DC

2.3 W @ 24V DC

2.0 W @ 10.0V DC

Thermal dissipation, max. 1794-IE12

4.1 BTU/hr @ 31.2V DC

1794-OE12

4.7 BTU/hr @ 24V DC

1794-IE8

10.2 BTU/hr @ 31.2V DC

1794-OE8

15.3 BTU/hr @ 31.2V DC

13.6 BTU/hr @ 31.2V DC

1794-IE8XOE4

10.3 BTU/hr @ 31.2V DC

Wire size – Power 0.34…2.5 mm2 (22…12 AWG) stranded copper wire rated at 75° C 167° F) or higher

4 mm2 (12 gauge) stranded, max – For 1794-IE8 and 1794-IE8XT only

1.2 mm (3/64 in.) insulation, max.

Wire category

(1)

2 – on signal port 2 – on power ports

Terminal base screw torque

1794-TB3G and 1794-TB3GS

0379…1.02 Nm (7…9 lb-in.)

0.8 Nm (7 lb-in.)

1794-TBN

1.0 Nm (9 lb-in.)

Enclosure type rating None (open-style)

(1)

Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.

Publication 1794-UM062A-EN-P - September 2012

Page 47

Environmental Specifications

The following are the environmental specifications common to all the FLEX I/O analog modules in this publication.

Environmental Specifications

Specification Description

Temperature, operating IEC 60068-2-1 (Test Ad, Operating Cold),

IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0…55 °C (32…131 °F)

-20…60 °C (-40…185 °F) – For 1794-IE12, 1794-OE12 and 1794-IE8XOE4 only

Temperature, nonoperating IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),

IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock): –40…85 °C (–40…185 °F)

Relative humidity IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):

5…95% noncondensing

Vibration IEC 60068-2-6 (Test Fc, Operating):

5 g @ 10…500 H

Shock, operating IEC60068-2-27 (Test Ea, Unpackaged shock):

Operating 30 g

Specifications 39

Shock, nonoperating IEC60068-2-27 (Test Ea, Unpackaged shock):

Nonoperating 50 g

Emissions CISPR 11:

Group 1, Class A

ESD immunity IEC 61000-4-2:

6 kV contact discharges 4 kV contact discharges – For 1794-IE8, 1794-OE4, 1794-IE4XOE2 and 1794-IE4XOE2XT only 8 kV air discharges

Radiated RF immunity 1794-IE12, 1794-OE12, 1794-IE8XOE4

IEC 61000-4-3: 10 V/m with 1 kHz sine-wave 80% AM from 30…2000 MHz 10 V/m with 200 Hz 50% pulse 100% AM at 900 MHz 10 V/m with 200 Hz 50% pulse 100% AM at 1890 MHz 3 V/m with 1 kHz sine-wave 80% AM from 2…2.7 GHz

1794-IE8, 1794-OE4, 1794-IE4XOE2 and 1794-IE4XOE2XT

10V/m with 1kHz sine-wave 80%AM from 30MHz to 1000MHz

EFT/B immunity IEC 61000-4-4:

±2 kV at 5 kHz on power ports – For 1794-IE12, 1794-OE12, 1794-IE8XOE4 only ±2 kV at 5 kHz on signal ports

Publication 1794-UM062A-EN-P - September 2012

Page 48

40 Specifications

Environmental Specifications

Specification Description

Conducted RF immunity 1794-IE12, 1794-OE12, 1794-IE8XOE4

IEC 61000-4-6: 10V/m with 1kHz sine-wave 80%AM from 150 kHz…80 MHz

1794-IE8, 1794-OE4, 1794-IE4XOE2 and 1794-IE4XOE2XT

IEC 61000-4-6: 10V/m with 1kHz sine-wave 80%AM from 150 kHz…30 MHz

Surge transient immunity IEC 6100-4-5:

±2 kV line-earth (CM) on shielded ports – For 1794-IE8, 1794-OE4, 1794-IE4XOE2 and

1794-IE4XOE2XT only

Certification

The following are the certifications common to all the FLEX I/O analog modules in this publication.

Certifications

Certifications (when product is marked)

Value

(1)

c-UL-us UL Listed Industrial Control Equipment, certified for US and

Canada. See UL File E65584

UL Listed for Class I, Division 2 Group A,B,C,D Hazardous

Locations, certified for U.S. and Canada. See UL File E194810.

CSA CSA certified Process Control Equipment

CSA certified for Class 1, Division 2, Groups A, B, C and D

Hazardous locations

CE European Union 2004/108/EC EMC Directive, compliant with:

EN 61326; Meas./Control/Lab., Industrial Requirements EN 61000-6-2; Industrial Immunity EN 61000-6-4; Industrial Emissions EN 50082-2; Industrial Immunity

C-Tick Australian Radiocommunications Act, compliant with:

AS/NZS CISPR 11; Industrial Emissions

Ex European Union 94/9/EC ATEX Directive, compliant with:

EN 60079-15; Potentially Explosive Atmospheres, Protection "n" (Zone 2)

(1)

1) See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and other certification details.

Publication 1794-UM062A-EN-P - September 2012

Page 49

Differences Between Series

Appendix B

Overview

The following lists major differences between series A and series B of your

FLEX I/O analog modules.

.

Differences Between Series A and Series B

Catalog Number Description Series A Series B

1794-IE8 1794-OE4 1794-IE4XOE2

Specifications

1794-OE4 Output current terminal 4 mA output until module is configured

1794-IE4XOE2 Output current terminal 4 mA output until module is configured

1794-IE8 1794-OE4 1794-IE4XOE2

Power Up bit in Read Word

Change to range selection tables

Output voltage terminal 2V output until module is configured

Output voltage terminal 2V output until module is configured

Agency Certification

(when product or packaging

is marked)

None This bit is set when all bits in the

No off position available. Module produces either 2V or 4 mA, depending on the range selected, until module is configured.

4…20 mA user configurable 0…20 mA user configurable

±10V user configurable 0…10V user configurable

4…20 mA user configurable 0…20 mA user configurable

±10V user configurable 0…10V user configurable

•CSA certified

•CSA Class I, Division 2, Groups A, B, C, D certified

•UL listed

configuration register are 0 unconfigured state).

Off position now produces 0V or 0 mA depending on the range selected, until module is configured.

0 mA output until module is configured 4…20 mA user configurable 0…20 mA user configurable

0 V output until module is configured ±10V user configurable 0…10V user configurable

0 mA output until module is configured 4…20 mA user configurable 0…20 mA user configurable

0 V output until module is configured ±10V user configurable 0…10V user configurable

•CSA certified

•CSA Class I, Division 2, Groups A, B, C, D certified

•UL listed

•CE marked for all applicable directives

41 Publication 1794-UM062A-EN-P - September 2012

Page 50

42 Differences Between Series

Notes:

Publication 1794-UM062A-EN-P - September 2012

Page 51

Data Tables

Appendix C

Overview

I/O messages are sent to (consumed) and received from (produced) the FLEX I/O modules. These messages are mapped into the processor memory. This appendix lists the default data maps for 1794 FLEX I/O analog modules.

For the default data map of See page

1794-IE8 Series B and 1794-IE8XT – 8 Input Analog Module Image Table Mapping

1794-IE12 – 12 Input Analog Module Image Table Mapping 47

1794-OE4 Series B and 1794-OE4XT– 4 Output Analog Module Image Table Mapping

1794-OE12 – 12 Output Analog Module Image Table Mapping 54

1794-IE4XOE2 Series B and 1794-IE4XOE2XT – 4 Input 2 Output Analog Combo Module Image Table Mapping

1794-IE8XOE4 – 8 Input 4 Output Analog Combo Module Image Table Mapping

44

51

57

61

Block Transfer Read and Write

The following block transfer read and write word bit information is presented for experienced users only.

43 Publication 1794-UM062A-EN-P - September 2012

Page 52

44 Data Tables

Module Image

I/O Image

Input Data Channel 0

Input Data Channel 1

Input Data Channel 2

Input Data Channel 3 Input Data Channel 4

Input Data Channel 5

Input Data Channel 6

Input Data Channel 7

Underrange

Configure select

Not used

Not used

Not used

Not used

Not used

Input S ize

Output S ize

0 or 1 W ord

1 to 9 W ords

PU

46064

1794-IE8 Series B and 1794-IE8XT – 8 Input Analog Module Image Table Mapping

Memory Map – 1794-IE8/B and 1794-IE8XT Analog Input Module

Decimal Bit15 1413 1211 1009080706050403020100Size

Octal Bit 17 1615 1413 1211100706050403020100Read/Write Words

S Analog Value Channel 0 Read Word 0

S Analog Value Channel 1 Read Word 1

S Analog Value Channel 2 Read Word 2

S Analog Value Channel 3 Read Word 3

S Analog Value Channel 4 Read Word 4

S Analog Value Channel 5 Read Word 5

S Analog Value Channel 6 Read Word 6

S Analog Value Channel 7 Read Word 7

PU Not used – set to zero U7 U6 U5 U4 U3 U2 U1 U0 Read Word 8

C7 C6 C5 C4 C3 C2 C1 C0 F7 F6 F5 F4 F3 F2 F1 F0 Write Word 0

Not used Write Word 1…5

Where: PU = Power up bit – included in series B modules only.

U = Underrange bits for 4…20 mA inputs C = Configure select bit F = Full range bit S = sign bit (in 2’s complement)

Publication 1794-UM062A-EN-P - September 2012

Page 53

Data Tables 45

Range Selection Bits – 1794-IE8/B and 1794-IE8XT Analog Input Module

Channel No. Ch 00 Ch 01 Ch 02 Ch 03 Ch 04 Ch 05 Ch 06 Ch 07

F0 C0 F1 C1 F2 C2 F3 C3 F4 C4 F5 C5 F6 C6 F7 C7

Bit 00 08

0…10V DC

1010101010101010

(10)

01 09

(11)

02 10

(12)

03 11

(13)

04 12

(14)

05 13

(15)

06 14

(16)

07 15

(17)

/0…20 mA

4…20 mA 0101010101010101

-10…+10V DC 1111111111111111

Off

(1)

0000000000000000

Where: C = Configure select bit

F = Full range bit

(1)

When configured to OFF, individual channels will return 000H on Series B modules, and 4…20 mA on Series A modules.

Word/Bit Descriptions – 1794-IE8/B and 1794-IE8XT Analog Input Module

Word Decimal Bit

Definition

(Octal Bit)

Read Word 0 Bits 00…14

(00…16)

Channel 0 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 0 analog data sign bit.

Read word 1 Bits 00…14

(00…16)

Channel 1 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 1 analog data sign bit.

Read word 2 Bits 00…14

(00…16)

Bit 15 (17) Channel 2 analog data sign bit.

Read word 3 Bits 00…14

(00…16)

Bit 15 (17) Channel 3 analog data sign bit.

Read word 4 Bits 00…14

(00…16)

Bit 15 (17) Channel 4 analog data sign bit.

Read word 5 Bits 00…14

(00…16)

Bit 15 (17) Channel 5 analog data sign bit.

Channel 2 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 3 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 4 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 5 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Publication 1794-UM062A-EN-P - September 2012

Page 54

46 Data Tables

Word/Bit Descriptions – 1794-IE8/B and 1794-IE8XT Analog Input Module

Word Decimal Bit

Definition

(Octal Bit)

Read word 6 Bits 00…14

(00…16)

Channel 6 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 6 analog data sign bit.

Read word 7 Bits 00…14

(00…16)

Channel 7 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 7 analog data sign bit.

Read word 8 Bits 00…07 Underrange bits (U) for individual channels (4…20

mA current input only) – Bit 00 corresponds to input channel 0, bit 01 corresponds to input channel 1, and so on. When set (1), indicates either a broken or open input wire, or input current at or below 4 mA.

Bits 08…14

Not used – set to 0.

(10…16)

Bit 15 (17) Power Up bit – included in series B modules only.

This bit is always 0 in series A modules. This bit is set to 1 when all bits in the configuration register (write word 0) are 0 (unconfigured state). The configuration register can be cleared by either a reset, or by the user writing all zeroes to it.

Write word 0 Bits 00…07 Full range bits (F) for individual channels – Bit 00

corresponds to input channel 0, bit 01 corresponds to input channel 1 and so on.

Bit 08…15 (10…17)

Configure select bits (C) for individual channels – Bit 08 corresponds to input channel 0, bit 09 corresponds to input channel 1 and so on.

Write words 1…5

Bits 00…15 (0…17)

Not used – set to 0.

Publication 1794-UM062A-EN-P - September 2012

Page 55

1794-IE12 – 12 Input Analog Module Image Table Mapping

EN Reserved

Set to 0

Configuration

Not Used

0

3

4

5

6

7

8

9

10

11

FP GFPU

NU

Out of Range

3

2

QS

46065

Data Tables 47

Memory Map – 1794-IE12 Analog Input Module

Decimal Bit15 1413 1211 1009080706050403020100Size

Octal Bit 17 1615 1413 1211100706050403020100Read/Write Words

S Analog Value Channel 0 Read word 0

S Analog Value Channel 1 Read word 1

S Analog Value Channel 2 Read word 2

S Analog Value Channel 3 Read word 3

S Analog Value Channel 4 Read word 4

S Analog Value Channel 5 Read word 5

S Analog Value Channel 6 Read word 6

S Analog Value Channel 7 Read word 7

S Analog Value Channel 8 Read word 8

S Analog Value Channel 9 Read word 9

S Analog Value Channel 10 Read word 10

S Analog Value Channel 11 Read word 11

PU FP GF NU R11 R10 R9 R8 R7 R6 R5 R4 R3 R2 R1 R0 Read word 12

Publication 1794-UM062A-EN-P - September 2012

Page 56

48 Data Tables

Memory Map – 1794-IE12 Analog Input Module

Decimal Bit15 1413 1211 1009080706050403020100Size

Octal Bit 17 1615 1413 1211100706050403020100Read/Write Words

EN 00 0 0 0 0000000000Write word 0

QS000CAB C89C67C45C23C01Write word 1

Where: PU = Power up bit

S = sign bit (in 2’s complement) FP = Field power off GF = General fault NU = Not used Rx = Out of range (x = associated channel) EN = Enable QS = Quick step bit – allows input filter to be reduced during rapid signal changes Cxx = Configuration

Range Selection Bits – 1794-IE12 Analog Input Module

Range Out of Range Range Setting Cxx Channel

Configuration

-10…+10V DC < -10.0V or > 10.0V Set bits for each

4…20 mA < 4.0 mA or > 20.0 mA

channel pair 00 = off 01 = 0…20 mA 10 = 4…20 mA 11 = ±10V

C01 for channels 0 and 1 C23 for channels 2 and 3 C45 for channels 4 and 5 C67 for channels 6 and 7 C89 for channels 8 and 9 CAB for channels 10 and 11

0…20 mA < 0.0 mA or > 20.0 mA

Where: Cxx = associated channel pair

Word/Bit Descriptions – 1794-IE12 Analog Input Module

Word Decimal Bit

Definition

(Octal Bit)

Read Word 0 Bits 00…14

(00…16)

Channel 0 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 0 analog data sign bit.

Read word 1 Bits 00…14

(00…16)

Channel 1 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 1 analog data sign bit.

Read word 2 Bits 00…14

(00…16)

Channel 2 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 2 analog data sign bit.

Read word 3 Bits 00…14

(00…16)

Channel 3 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 3 analog data sign bit.

Publication 1794-UM062A-EN-P - September 2012

Page 57

Word/Bit Descriptions – 1794-IE12 Analog Input Module

Data Tables 49

Word Decimal Bit

(Octal Bit)

Read word 4 Bits 00…14

(00…16)

Bit 15 (17) Channel 4 analog data sign bit.

Read word 5 Bits 00…14

(00…16)

Bit 15 (17) Channel 5 analog data sign bit.

Read word 6 Bits 00…14

(00…16)

Bit 15 (17) Channel 6 analog data sign bit.

Read word 7 Bits 00…14

(00…16)

Bit 15 (17) Channel 7 analog data sign bit.

Read word 8 Bits 00…14

(00…16)

Bit 15 (17) Channel 8 analog data sign bit.

Read word 9 Bits 00…14

(00…16)

Bit 15 (17) Channel 9 analog data sign bit.

Definition

Channel 4 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 5 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 6 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 7 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 8 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 9 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Read word 10 Bits 00…14

(00…16)

Channel 10 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 10 analog data sign bit.

Read word 11 Bits 00…14

(00…16)

Channel 11 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 11 analog data sign bit.

Publication 1794-UM062A-EN-P - September 2012

Page 58

50 Data Tables

Word/Bit Descriptions – 1794-IE12 Analog Input Module

Word Decimal Bit

(Octal Bit)

Read word 12 Bits 00…11

(00…13)

Bit 12 (14) Not used – set to 0.

Bit 13 (15) General Fault – Bit set to 1 if a fault has occurred

Bit 14 (16) Field Power Off – Bit is set to 1 if the field power

Bit 15 (17) Power Up bit – This bit is set to 1 when all bits in the

Write word 0 Bits 00…14

(00…16)

Bit 15 (17) Module Enable bit – Set the bit to 1 to enable the

Write word 1 Bits 00…11

(00…13)

Definition

Out of range bits (R) for individual channels – Bit 00

corresponds to input channel 0, bit 01 corresponds to input channel 1, and so on. When set (1), indicates out of range. For more details on out of range, see

Table

Range Selection Bits – 1794-IE12 Analog Input

Module on page 48.

including: RAM test failure, ROM test failure, reserved bits asserted (bits 12…0 of the Reserved word and 15…12 of the Config word) and EEPROM failure.

is off. This is not an indication of field power that is out of tolerance.

configuration register (write word 1) are 0 (unconfigured state).

Reserved – set to 0.

module. This will turn the OK LED solid green.

Configuration – Set the 2 bit pattern that configures a pair of channels for Off, 0…20 mA, 4…20 mA, and ±10V. For more information, see Table

Range Selection Bits – 1794-IE12 Analog Input Module on page 48.

Publication 1794-UM062A-EN-P - September 2012

Bits 12…14

Set to 0.

(14…16)

Bit 15 (17) Quick Step bit – Set to 1 to allow input filter to be

reduced during rapid signal changes. Ince the signal change is within 1% of FS (that is, 327 counts), filtering is returned to normal.

Page 59

Data Tables 51

46066

1794-OE4 Series B and 1794-OE4XT– 4 Output Analog Module Image Table Mapping

Memory Map – 1794-OE4/B and 1794-OE4XT Analog Output Module

Decimal Bit15141312111009080706050403020100Size

Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Read/Write Words

PU Not used – set to 0 W3 W2 W1 W0 Read word 0

S Analog Value Channel 0 Write word 0

S Analog Value Channel 1 Write word 1

S Analog Value Channel 2 Write word 2

S Analog Value Channel 3 Write word 3

Not used – set to 0 M3M2M1M0Write word 4

Not used – set to 0 C3 C2 C1 C0 Not used – set to 0 F3 F2 F1 F0 Write word 5

Not used – set to 0 Write words 6…9

S Safe State Value – Channel 0 Write word 10

S Safe State Value – Channel 1 Write word 11

S Safe State Value – Channel 2 Write word 12

S Safe State Value – Channel 3 Write word 13

Where: PU = Power up bit

W = Diagnostic bits for current output wire broken or load resistance high. Not used on voltage outputs. S = Sign bit (in 2’s complement) M = Multiplex control C = Configure select bit F = Full range bit

Publication 1794-UM062A-EN-P - September 2012

Page 60

52 Data Tables

Range Selection Bits – 1794-OE4/B and 1794-OE4XT Analog Output Module

Channel No. Ch 00 Ch 01 Ch 02 Ch 03

F0 C0 F1 C1 F2 C2 F3 C3

00 08

(10)

01 09

(11)

02 10

(12)

03 11

(13)

4…20 mA 01010101

0…10V DC

10101010

/0…20 mA

-10…+10V DC 11111111

Off

(1)

00000000

Where: C = Configure select bit

F = Full range bit

(1)

When configured to OFF, individual channels will return 0V or 0 mA on Series B modules, and 2V or 4 mA on Series A modules.

Word/Bit Descriptions – 1794-OE4/B and 1794-OE4XT Analog Output Module

Word Decimal Bit

Definition

(Octal Bit)

Read word 0 Bits 00…03 Current outputs only – When set (1), the wire on the

output is broken or the load resistance is too high. Bit 00 corresponds to channel 0, bit 01 corresponds to channel 2, and so on.

Bits 04…14

Not used – set to 0.

(04…16)

Bit 15 (17) Power Up bit – included in series B modules only. This

bit is always 0 in series A modules. This bit is set to 1 when all bits in the configuration register (write word 0) are 0 (unconfigured state). The configuration register can be cleared by either a reset, or by the user writing all zeroes to it.

Write Word 0 Bits 00…14

(00…16)

Channel 0 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 0 analog data sign bit.

Publication 1794-UM062A-EN-P - September 2012

Write Word 1 Bits 00…14

(00…16)

Bit 15 (17) Channel 1 analog data sign bit.

Write Word 2 Bits 00…14

(00…16)

Bit 15 (17) Channel 2 analog data sign bit.

Write Word 3 Bits 00…14

(00…16)

Bit 15 (17) Channel 3 analog data sign bit.

Channel 1 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 2 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 3 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Page 61

Data Tables 53

Word/Bit Descriptions – 1794-OE4/B and 1794-OE4XT Analog Output Module

Word Decimal Bit

Definition

(Octal Bit)

Write Word 4 Bits 00…03 Multiplex control bits – for individual channels.

These bits control the safe state analog outputs. – Bit 00 corresponds to output channel 0, bit 01 corresponds to output channel 1, and so on. 1 = use words 0, 1, 2 or 3 as directed by channel number n 0 = use words 10, 11, 12 or 13 as directed by channel number n When bits 00…03 are all cleared (0) simultaneously by a communication error or user choice through the programmable controller program, word 5 full range and configure select bits are preserved at their last setting.

Bits 04…15

Not used – set to 0.

(04…17)

Write word 6…9

Bits 00…03 Full range bits (F) for individual channels – Bit 00

corresponds to output channel 0, bit 01 corresponds to output channel 1, and so on. See Range Selection Bits – 1794-OE4/B and 1794-OE4XT Analog Output Module on page 52.

Bits 04…07

Not used – set to 0.

(04…09)

Bits 08…11 (10…13)

Configure select bits (C) for individual channels – Bit 08 corresponds to output channel 0, bit 09 corresponds to output channel 1, and so on. See Range Selection Bits – 1794-OE4/B and 1794-OE4XT Analog Output Module on page 52.

Write words 7…14

Bits 12…15 (14…17)

Bits 00…15 (00…17)

Not used – set to 0.

Not used – set to 0.

Publication 1794-UM062A-EN-P - September 2012

Page 62

54 Data Tables

46067

1794-OE12 – 12 Output Analog Module Image Table Mapping

FP GFPU

EN Sn WR Not Used

Set to 0 Configuration

NU

Wire Off

0

3

4

5

6

7

8

9

10

11

Memory Map – 1794-OE12 Analog Output Module

Decimal Bit15 14 13 12 11 10 09080706050403 02 01 00 Size

Octal Bit 17 16 15 14 13 12 11100706050403 02 01 00 Read/Write Words

PU FP GF NU W11W10W9 W8 W7 W6 W5 W4 W3 W2 W1 W0 Read word 0

(Reserved)

ENS1S0WR0 00000000 0 0 0 Write word 0

S Analog Value Channel 0 Write word 1

S Analog Value Channel 1 Write word 2

S Analog Value Channel 2 Write word 3

S Analog Value Channel 3 Write word 4

S Analog Value Channel 4 Write word 5

S Analog Value Channel 5 Write word 6

S Analog Value Channel 6 Write word 7

S Analog Value Channel 7 Write word 8

S Analog Value Channel 8 Write word 9

S Analog Value Channel 9 Write word 10

S Analog Value Channel 10 Write word 11

Publication 1794-UM062A-EN-P - September 2012

Page 63

Data Tables 55

Memory Map – 1794-OE12 Analog Output Module

Decimal Bit15 14 13 12 11 10 09080706050403 02 01 00 Size

Octal Bit 17 16 15 14 13 12 11100706050403 02 01 00 Read/Write Words

S Analog Value Channel 11 Write word 12

0 0 0 0 CAB C89 C67 C45 C23 C01 Write words 13

Where: PU = Power up bit

FP = Field power bit GF = General fault NU = Not used Wx = Wire off (x = associated channel) EN = Enable outputs S1/S0 = Safe state source - When EN = 0, these bits indicate source of safe state output. WR = Wire-off reset Cxx = Configuration

Range Selection Bits – 1794-OE12 Analog Output Module

Range Out of Range Range Setting

Cxx Configuration

-10…+10V DC 1 <-10.0V or >10.0V Set bits for each

4…20 mA <4.0mA or >20.0 mA

0…20 mA <0.0 mA or >20.0 mA

channel pair 00 = off 01 = 0…20 mA 10 = 4…20 mA 11 = ±10V

(1)

xx = associated channel pair.

C01 for channels 0 and 1 C23 for channels 2 and 3 C45 for channels 4 and 5 C67 for channels 6 and 7 C89 for channels 8 and 9 CAB for channels 10 and 11

Safe State Selection Bits – 1794-OE12 Analog Output Module

S1/S0 Safe State

Safe State Mode Safe State Output Behavior

Select Source

S1 S0

0 0 Safe State value is in the

Outputs use Safe State value

output words

0 1 Reserved (Safe State value

is in the output words)

1 0 Clear/Reset the outputs,

based on range selected

Reserved (Outputs use Safe State value)

+10V range – Output set to 0V 4…20 mA range – Output set to 4 mA 0…20 mA range – Output set to 0 mA

1 1 Hold output at its present

Outputs Hold Last State

level

(1)

Channel

Publication 1794-UM062A-EN-P - September 2012

Page 64

56 Data Tables

Word/Bit Descriptions – 1794-OE12 Analog Output Module

Word Decimal Bit

(Octal Bit)

Read Word 0 Bits 00…11

(00…13)

Bit 12 (14) Not Used.

Bit 13 (15) General Fault – Bit is set to 1 if there is a fault to

Bit 14 (16) Field Power Off – Bit is set to 1 if the field power

Bit 15 (17) Power Up bit – This bit is set to 1 when all bits in the

Write word 0 Bits 00…11

(00…13)

Bit 12 (14) Wire Off Reset – when asserted allowes the latched

Bit 13…14 (15…16)

Definition

Wire Off – Indicates the wire, for the associated

output channel configured for current, has become disconnected or that the load resistance is too high.

the module.

is off.

configuration register (write word 1) are 0 (unconfigured state). The configuration register can be cleared by either a reset, or by the user writing all zeroes to it.

Not Used.

wire-off bits to be cleared.

Safe State Source – When EN = 0, these bits indicate source of safe state output, see Table

Safe State Selection Bits – 1794-OE12 Analog Output Module on page 55.

Bit 15 (17) Enable Outputs – instructs the outputs to go to their

Write word 1 Bits 00…14

(00…16)

Bit 15 (17) Channel 0 analog data sign bit.

Write word 2 Bits 00…14

(00…16)

Bit 15 (17) Channel 1 analog data sign bit.

Write word 3 Bits 00…14

(00…16)

Bit 15 (17) Channel 2 analog data sign bit.

Write word 4 Bits 00…14

(00…16)

Bit 15 (17) Channel 3 analog data sign bit.

Write word 5 Bits 00…14

(00…16)

Bit 15 (17) Channel 4 analog data sign bit.

commanded level. When EN = 0, the outputs go to the level as directed by S1/S0.

Channel 0 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 1 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 2 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 3 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 4 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Publication 1794-UM062A-EN-P - September 2012

Page 65

Word/Bit Descriptions – 1794-OE12 Analog Output Module

Data Tables 57

Word Decimal Bit

Definition

(Octal Bit)

Write word 6 Bits 00…14

(00…16)

Channel 5 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 5 analog data sign bit.

Write word 7 Bits 00…14

(00…16)

Channel 6 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 6 analog data sign bit.

Write word 8 Bits 00…14

(00…16)

Channel 7 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 7 analog data sign bit.

Write word 9 Bits 00…07 Channel 8 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 08…15

Channel 8 analog data sign bit.

(10…17)

Write word 10 Bits 00…07 Channel 9 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 08…15

Channel 9 analog data sign bit.

(10…17)

Write word 11 Bits 00…07 Channel 10 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 08…15

Channel 10 analog data sign bit.

(10…17)

Write word 12 Bits 00…07 Channel 11 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 08…15

Channel 11 analog data sign bit.

(10…17)

Write word 13 Bits 00…11

(00…13)

Configuration – Set range for each channel pair. For more information on range selection bits, see

Table

Range Selection Bits – 1794-OE12 Analog

Output Module on page 55.

Bits 12…15

Not Used.

(14…17)

1794-IE4XOE2 Series B and 1794-IE4XOE2XT – 4 Input 2 Output Analog Combo Module Image Table Mapping

Publication 1794-UM062A-EN-P - September 2012

Page 66

58 Data Tables

Module

Image

I/O Image

Input Data Channel 0

Input Data Channel 1

Input Data Channel 2

Input Data Channel 3

Output Data Channel 0

Output Data Channel 1

Underrange & Diag.

Not used

Not used

Not used

Not used

Not used

Not used

Not used Full Range and Configure Select

Not used

Input Size

Output Size

0 to 4 Words

0 to 5 Words

Read

Write

OE

PU

46068

Memory Map – 1794-IE4XOE2/B and 1794-IE4XOE2XT Analog Combo Module

Decimal Bit15 14 13 12 11 10090807060504030201 00 Size

Octal Bit 17 16 15 14 13 12 111007060504030201 00 Read/Write Words

S Analog Value Channel 0 Read word 1

S Analog Value Channel 1 Read word 2

S Analog Value Channel 2 Read word 3

S Analog Value Channel 3 Read word 4

PU Not used – set to 0 W1 W0 U3 U2 U1 U0 Read word 5

S Analog Data – Output Channel 0 Write word 1

S Analog Data – Output Channel 1 Write word 2

Not used – set to 0 OE1 OE0 Write word 3

Not used C5 C4 C3 C2 C1 C0 0 0 F5 F4 F3 F2 F1 F0 Write word 4

Not used – set to 0 Write word 5…10

Where: PU = Power up bit – included in series B modules only.

W = Diagnostic bits for current output wire broken or load resistance high. (Not used on voltage outputs.) U = Underrange bits for 4…20 mA inputs S = Sign bit (in 2’s complement) OE = Output enable bits (bit 00 corresponds to output 0, bit 01 corresponds to output 1, and so on. C = Configure select bit F = Full range bit

Publication 1794-UM062A-EN-P - September 2012

Page 67

Range Selection Bits – 1794-IE4XOE2/B and 1794-IE4XOE2XT Analog Combo Module

Data Tables 59

Channel No. Input

Channel 0

Input Channel 1

Input Channel 2

Input Channel 3

Output Channel 0

Output Channel 1

F0 C0 F1 C1 F2 C2 F3 C3 F4 C4 F5 C5

Decimal Bits (Octal Bits)

00 08

(10)

01 09

(11)

02 10

(12)

03 11

(13)

04 12

(14)

05 13

(15)

4…20 mA 101010101010

0…10V DC/0…20 mA 0 1 0 1 0 1 0 1 0 1 0 1

-10…10V DC 1 1 1 1 1 1 1 1 1 1 1 1

Off 000000000000

Where: C = Configure select bit

F = Full range bit Off = When configured to off, individual channels will return 0V.

Word/Bit Descriptions – 1794-IE4XOE2/B and 1794-IE4XOE2XT Analog Combo Module

Word Decimal Bit Definition

Read word 1 Bits 00…14

(00…16)

Channel 0 analog data – 12-bit left justified two’s complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 0 analog date sign bit.

Read word 2 Bits 00…14

(00…16)

Channel 1 analog data – 12-bit left justified two’s complement number; unused lower bits are zero; 4...20 mA uses all 16 bits.

Bit 15 (17) Channel 1 analog date sign bit.

Read word 3 Bits 00…14

(00…16)

Channel 2 analog data – 12-bit left justified two’s complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 2 analog data sign bit.

Read word 4 Bits 00…14

(00…16)

Channel 3 analog data – 12-bit left justified two’s complement number; unused lower bits are zero; 4…20 mA used all 16 bits.

Bit 15 (17) Channel 3 analog data sign bit.

Read word 5 Bit 00…03 Underrange bits (U)- for individual channels (4...20mA current inputs

only) -Bit 00 corresponds to input channel 0, bit 01 corresponds to input channel 1, and so on. When set (1), indicates either a broken or open input wire, or input current is at or below 4 mA.

Bits 04…05 Wire Off bits (W) – Current outputs only – When set (1), the wire on

the current output is broken or the load resistance is too high. Bit 00 corresponds to input channel 0, bit 01 corresponds to input channel 1, and so on.

Bits 06…14

Not used – set to 0.

(06…16)

Bit 15 (17) Power Up bit – included in series B modules only. This bit is

always 0 in series A modules. This bit is set to 1 when all bits in the configuration register (write word 3) are 0 (unconfigured state). The configuration register can be cleared by either a reset, or by the user writing all zeroes to it.

Publication 1794-UM062A-EN-P - September 2012

Page 68

60 Data Tables

Word/Bit Descriptions – 1794-IE4XOE2/B and 1794-IE4XOE2XT Analog Combo Module

Word Decimal Bit Definition

Write word 1 Bits 00…14

(00…16)

Channel 0 analog data – 12-bit left justified two’s complement number; unused lower bits are zero; 4...20mA uses all 16 bits.

Bit15 (17) Channel 0 analog date sign bit.

Write word 2 Bits 00…14

(00…16)

Channel 1 analog data – 12-bit left justified two’s complement number; unused lower bits are zero; 4...20mA uses all 16 bits.

Bit15 (17) Channel 1 analog date sign bit.

Write word 3 Bits 00…01 Output Enable bits – Bit 00 corresponds to output 0, bit 01

corresponds to output 1, and so on. These bits must be set to 1.

Bits 02…15

Not used – set to 0.

(02…17)

Write word 4 Bits 00…05 Full range bits (F) for individual channels – Bit 00 corresponds to input

channel 0, bit 01 corresponds to output channel 1, and so on.

Bits 06…07 Not used – set to 0.

Write words 5…10

Bit 08…13 (10…15)

Configure select bits (C) for individual channels – Bit 08 corresponds to input channel 0, bit 09 (11) corresponds to input channel 1, bit 10 (12) corresponds to input channel 2, bit 11 (13) correspoinds to input channel 3, bit 12 (14) corresponds to output channel 0, and bit 13 (15) corresponds to output channel 1. Refer to Range Bit Selections.

Bits 14…15

Not used – set to 0.

(16…17)

Bits 00…15 Not used – set to 0.

Publication 1794-UM062A-EN-P - September 2012

Page 69

Data Tables 61

Set to 0 Configuration

0

3

4

5

6

7

FP GFPU NU Wire Off Out of Range

9

6

QS

EN Sn WR Not Used

0

3

46069

1794-IE8XOE4 – 8 Input 4 Output Analog Combo Module Image Table Mapping

Memory Map – 1794-IE8XOE4 Analog Combo Module

Decimal Bit15 14 13 12 11 10090807060504030201 00 Size

Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Read/Write Words

S Signed 2’s Analog Value Channel 0 Read word 0

S Analog Value Channel 1 Read word 1

S Analog Value Channel 2 Read word 2

S Analog Value Channel 3 Read word 3

S Analog Value Channel 4 Read word 4

S Analog Value Channel 5 Read word 5

S Analog Value Channel 6 Read word 6

S Analog Value Channel 7 Read word 7

PU FP GF NU W3 W2 W1 W0 R7 R6 R5 R4 R3 R2 R1 R0 Read word 8

ENS1S0WR0 0000000000 0 Write word 0

S Analog Data – Output Channel 0 Write word 1

S Analog Data – Output Channel 1 Write word 2

S Analog Data – Output Channel 2 Write word 3

(Reserved)

Publication 1794-UM062A-EN-P - September 2012

Page 70

62 Data Tables

Memory Map – 1794-IE8XOE4 Analog Combo Module

Decimal Bit15 14 13 12 11 10090807060504030201 00 Size

Octal Bit 17 16 15 14 13 12 111007060504030201 00 Read/Write Words

S Analog Data – Output Channel 3 Write word 4

QS 0 0 0 CAB C89 C67 C45 C23 C01 Write word 5

Where: PU = Power up bit

FP = Field power fault GF = General fault NU = Not used Wx = Wire off (x = associated channel) Rx = Out of range (x = associated channel) EN = Enable outputs S1/S0 = Safe state source - When EN = 0, these bits indicate source of safe state output. WR = Wire-off reset QS = Quick step bit - allows input filter to be reduced during rapid signal changes. Cxx = Channel Configuration (xx = associated channel pair)

Range Selection Bits – 1794-IE8XOE4 Analog Combo Module

Range Out of Range Range Setting Cxx Channel

Configuration

-10…+10V DC 1< -10.0V or > 10.0V Set bits for each

4…20 mA <4.0 mA or >20.0 mA

0…20 mA <0.0 mA or >20.0 mA

channel pair 00 = off 01 = 0…20 mA 10 = 4…20 mA 11 = ±10V

C01 for channels 0 and 1 C23 for channels 2 and 3 C45 for channels 4 and 5 C67 for channels 6 and 7 C89 for channels 8 and 9 CAB for channels 10 and 11

Where: Cxx = associated channel pair.

Safe State Selection Bits – 1794-IE8XOE4 Analog Combo Module

S1/S0 Safe State

Safe State Mode Safe State Output Behavior

Select Source

S1 S0

0 0 Safe State value is in the

Outputs use Safe State value

output words

0 1 Reserved (Safe State value

is in the output words)

1 0 Clear/Reset the outputs,

based on range selected

Reserved (Outputs use Safe State value)

+10V range – Output set to 0V 4…20 mA range – Output set to 4 mA 0…20 mA range – Output set to 0 mA

1 1 Hold output at its present

Outputs Hold Last State

level

Publication 1794-UM062A-EN-P - September 2012

Page 71

Word/Bit Descriptions – 1794-IE8XOE4 Analog Combo Module

Data Tables 63

Word Decimal Bit

(Octal Bit)

Read Word 0 Bits 00…14

(00…16)

Bit 15 (17) Channel 0 analog data sign bit.

Read word 1 Bits 00…14

(00…16)

Bit 15 (17) Channel 1 analog data sign bit.

Read word 2 Bits 00…14

(00…16)

Bit 15 (17) Channel 2 analog data sign bit.

Read word 3 Bits 00…14

(00…16)

Bit 15 (17) Channel 3 analog data sign bit.

Read word 4 Bits 00…14

(00…16)

Bit 15 (17) Channel 4 analog data sign bit.

Read word 5 Bits 00…14

(00…16)

Bit 15 (17) Channel 5 analog data sign bit.

Definition

Channel 0 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 1 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 2 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 3 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 4 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 5 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Read word 6 Bits 00…14

(00…16)

Channel 6 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 6 analog data sign bit.

Read word 7 Bits 00…14

(00…16)

Channel 7 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 7 analog data sign bit.

Publication 1794-UM062A-EN-P - September 2012

Page 72

64 Data Tables

Word/Bit Descriptions – 1794-IE8XOE4 Analog Combo Module

Word Decimal Bit

Definition

(Octal Bit)

Read word 8 Bits 00…07 Out of range bits (R) for individual channels – Bit 00

corresponds to input channel 0, bit 01 corresponds to input channel 1, and so on. When set (1), indicates out of range. For more details on out of range, see

Table

Range Selection Bits – 1794-IE12 Analog Input

Module on page 48.

Bits 08…11 (10…13)

Wire Off – Indicates the wire, for the associated output channel configured for current, has become disconnected or that the load resistance is too high.

Bit 12 (14) Not used – set to 0.

Bit 13 (15) General Fault – Bit set to 1 if a fault has occurred

including: RAM test failure, ROM test failure, reserved bits asserted (bits 12…0 of the Reserved word and 15…12 of the Config word) and EEPROM failure.

Bit 14 (16) Field Power Off – Bit is set to 1 if the field power

is off. This is not an indication of field power that is out of tolerance.

Bit 15 (17) Power Up bit – This bit is set to 1 when all bits in the

configuration register (write word 1) are 0 (unconfigured state).

Write word 0 Bits 00…11

(00…13)

Bit 12 (14) Wire Off Reset – when asserted allowes the latched

Bit 13…14 (15…16)

Bit 15 (17) Enable Outputs – instructs the outputs to go to their

Write word 1 Bits 00…14

(00…16)

Bit 15 (17) Channel 0 analog data sign bit.

Write word 2 Bits 00…14

(00…16)

Bit 15 (17) Channel 1 analog data sign bit.

Write word 3 Bits 00…14

(00…16)

Bit 15 (17) Channel 2 analog data sign bit.

Not Used.

wire-off bits to be cleared.

Safe State Source – When EN = 0, these bits indicate source of safe state output, see Table

Safe State Selection Bits – 1794-IE8XOE4 Analog Combo Module on page 63.

commanded level. When EN = 0, the outputs go to the level as directed by S1/S0.

Channel 0 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 1 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Channel 2 analog data – 12-bit left justified two's complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Publication 1794-UM062A-EN-P - September 2012

Page 73

Word/Bit Descriptions – 1794-IE8XOE4 Analog Combo Module

Data Tables 65

Word Decimal Bit

(Octal Bit)

Write word 4 Bits 00…14

(00…16)

Bit 15 (17) Channel 3 analog data sign bit.

Write word 5 Bits 00…11

(00…13)

Bits 12…14 (14…16)

Bit 15 (17) Quick Step bit – Set to 1 to allow input filter to be

Definition

Channel 3 analog data – 12-bit left justified two's

complement number; unused lower bits are zero; 4…20 mA uses all 16 bits.

Configuration – Set the 2 bit pattern that configures a pair of channels for Off, 0…20 mA, 4…20 mA, and ±10V. For more information, see Ta bl e

Range Selection Bits – 1794-IE8XOE4 Analog Combo Module on page 63.

Set to 0.

reduced during rapid signal changes. Ince the signal change is within 1% of FS (that is, 327 counts), filtering is returned to normal.

Publication 1794-UM062A-EN-P - September 2012

Page 74

66 Data Tables

Notes:

Publication 1794-UM062A-EN-P - September 2012

Page 75

Module Programming

Appendix D

Overview

Block Transfer Programming

This Appendix serves as a reference to users of the PLC Processors to program their modules.

To initiate communication between the analog input and output modules and your PLC processor, you must enter block transfer instructions into your ladder logic program. Use this chapter to enter the necessary block transfer instructions into your ladder logic program.

Your module communicates with the processor through bidirectional block transfers. This is the sequential operation of both read and write block transfer instructions.

A configuration block transfer write (BTW) is initiated when the analog module is first powered up, and subsequently only when the programmer wants to enable or disable features of the module. The configuration BTW sets the bits which enable the programmable features of the module, such as scaling, alarms, ranges, etc. Block transfer reads are performed to retrieve information from the module.

Block transfer read (BTR) programming moves status and data from the module to the processor’s data table. The processor user program initiates the request to transfer data from the module to the processor. The transferred words contain module status, channel status and input data from the module.

Sample Programs for FLEX I/O Analog Modules

ATTENTION: If the analog module is not powered up before the

remote I/O adapter, the adapter will not recognize the module. Make certain that the analog module is installed and powered before or simultaneously with the remote I/O adapter. If the adapter does not establish communication with the module, cycle power to the adapter.

The following sample programs are minimum programs; all rungs and conditioning must be included in your application program. You can disable BTRs, or add interlocks to prevent writes if desired. Do not eliminate any storage bits or interlocks included in the sample programs. If interlocks are removed, the program may not work properly.

Your program should monitor status bits, block transfer read and block transfer write activity.

The following sample programs show you how to use your analog module efficiently when operating with a programmable controller.

These programs show you how to:

67 Publication 1794-UM062A-EN-P - September 2012

Page 76

68 Module Programming

•configure the module

• read data from the module

• update the module output channels (if used)

These programs illustrate the minimum programming required for communication to take place.

PLC-2 Programming

The 1794 analog I/O modules are not recommended for use with PLC-2 family programmable controllers due to the number of digits needed for high resolution. In addition, the data returned from the analog-to-digital converter in the module is 12-bit resolute. This value is left-justified into a 16-bit field, reserving the most significant bit for a sign bit.

PLC-3 Programming

Block transfer instructions with the PLC-3 processor use one binary file in a data table section for module location and other related data. This is the block transfer control file. The block transfer data file stores data that you want transferred to your module (when programming a block transfer write) or from your module (when programming a block transfer read). The address of the block transfer data files are stored in the block transfer control file.

The same block transfer control file is used for both the read and write instructions for your module. A different block transfer control file is required for every module.

A sample program segment with block transfer instructions is shown in

Figure

PLC-3 Family Sample Program Structure for a 1794-IE8 Module.

Publication 1794-UM062A-EN-P - September 2012

Page 77

Module Programming 69

EN

BTR

BLOCK TRANSFER READ RACK: GROUP: SLOT:

DATA FILE:

7 0 0

B4:0

LENGTH:

CONTROL:

9

B3:0

05

Pushbutton

B3:0

15

DN

ER

Block Transfer

Read Done Bit

B3:0

Block Transfer Write Done Bit

12

15

13

Enable

Done

Error

EN

BTR

BLOCK TRANSFER WRITE RACK: GROUP: SLOT:

DATA FILE:

7 0 0

B5:0

LENGTH:

CONTROL:

1

B3:0

DN

ER

02

05

03

Enable

Done

Error

Power-up Bit

1

B4:8

15

1

Power-up bit included in Series B modules only.

1

2

TIP

PLC-3 Family Sample Program Structure for a 1794-IE8 Module

Program Action

At power-up in RUN mode, or when the processor is switched from PROG to RUN, the user program enables a block transfer read. Then it initiates a block transfer write to configure the module if the power-up bit is set.

Thereafter, the program continuously performs read block transfers.

You must create the data file for the block transfers before you enter the block transfer instructions.

The pushbutton allows the user to manually request a block transfer write to configure the module.

Publication 1794-UM062A-EN-P - September 2012

Page 78

70 Module Programming

EN

BTR

BLOCK TRANSFER READ RACK: GROUP: SLOT:

DATA FILE:

7 1 0

B7:0

LENGTH:

CONTROL:

1

B6:0

05

B6:0

15

DN

ER

Block Transfer

Read Done Bit

B6:0

Block Transfer Write Done Bit

12

15

13

Enable

Done

Error

EN

BTR

BLOCK TRANSFER WRITE RACK: GROUP: SLOT:

DATA FILE:

7 1 0

B8:0

LENGTH:

CONTROL:

14

B6:0

DN

ER

02

05

03

Enable

Done

Error

1

2

TIP

EN

BTR

BLOCK TRANSFER READ RACK: GROUP: SLOT:

DATA FILE:

7 2 0

B10:0

LENGTH:

CONTROL:

5

B9:0

05

B9:0

15

DN

ER

Block Transfer

Read Done Bit

B9:0

Block Transfer Write Done Bit

EN

BTR

BLOCK TRANSFER WRITE RACK: GROUP: SLOT:

DATA FILE:

7 2 0

B11:0

LENGTH:

CONTROL:

8

B9:0

DN

ER

1

2

PLC-3 Family Sample Program Structure for a 1794-OE4 Module

Program Action

At power-up in RUN mode, or when the processor is switched from PROG to RUN, the user program enables a block transfer read. Then it initiates a block transfer write to configure the module and send data values.

Thereafter, the program continuously performs read block transfers and write block transfers.

You must create the data file for the block transfers before you enter the block transfer instructions

PLC-3 Family Sample Program Structure for a 1794-IE4XOE2 Module

Publication 1794-UM062A-EN-P - September 2012

Page 79

Module Programming 71

TIP

EN

BTR

BLOCK TRANSFER READ RACK: GROUP: SLOT:

DATA FILE:

2 1 0

N13:0

LENGTH:

CONTROL:

9

N12:0

Pushbutton

N12:0

15

DN

ER

BTR Enable Bit

EN

BTW

BLOCK TRANSFER WRITE RACK: GROUP: SLOT:

DATA FILE:

2 1 0

N13:20

LENGTH:

CONTROL:

1

N12:5

DN

ER

Power-up Bit

1

B13:8

15

1

Power-up bit included in Series B modules only.

1

2

15

N12:5

BTW Enable Bit

CONTINUOUS:

N

CONTINUOUS:

N

N12:5

15

BTW Enable Bit

15

N12:0

BTR Enable Bit

Program Action

At power-up in RUN mode, or when the processor is switched from PROG to RUN, the user program enables a block transfer read. Then it initiates a block transfer write to configure the module and send data values.

Thereafter, the program continuously performs read block transfers and write block transfers.

You must create the data file for the block transfers before you enter the block transfer instructions

PLC-5 Programming

The PLC-5 program is very similar to the PLC-3 program with the following exceptions:

• block transfer enable bits are used instead of done bits as the conditions on each rung.

• separate block transfer control files are used for the block transfer instructions.

PLC-5 Family Sample Program Structure for a 1794-IE8 Module

Program Action

At power-up in RUN mode, or when the processor is switched from PROG to RUN, the user program enables a block transfer read. Then it initiates a block transfer write to configure the module if the power-up bit is set.

Publication 1794-UM062A-EN-P - September 2012

Page 80

72 Module Programming

EN

BTR

BLOCK TRANSFER READ RACK: GROUP: SLOT:

DATA FILE:

7 2 0

B10:0

LENGTH:

CONTROL:

5

B9:0

05

B9:0

15

DN

ER

Block Transfer

Read Done Bit

B9:0

Block Transfer Write Done Bit

EN

BTR

BLOCK TRANSFER WRITE RACK: GROUP: SLOT:

DATA FILE:

7 2 0

B11:0

LENGTH:

CONTROL:

8

B9:0

DN

ER

1

2

BTR Enable Bit

1

BTW Enable Bit

2

Thereafter, the program continuously performs read block transfers to configure the module.

The pushbutton allows the user to manually request a block transfer write.

PLC-5 Family Sample Program Structure for a 1794-OE4 Module

BTR

N14:0

15

N14:5

15

BTW Enable Bit

N14:5

15

BTR Enable Bit

N14:0

15

BLOCK TRANSFER READ RACK: GROUP: SLOT: CONTROL: DATA FILE: LENGTH: CONTINUOUS:

BTW

BLOCK TRANSFER WRITE RACK: GROUP: SLOT: CONTROL: DATA FILE: LENGTH: CONTINUOUS:

N14:0

N15:0

N14:5 N15:5

14

EN 2 2 0

DN

1

ER N

EN 2 2 0

DN

ER N

Program Action

At power-up in RUN mode, or when the processor is switched from PROG to RUN, the user program enables a block transfer read. Then it initiates a block transfer write to configure the module and send data values.

Thereafter, the program continuously performs read block transfers and write block transfers.

PLC-5 Family Sample Program Structure for a 1794-IE4XOE2 Module

Publication 1794-UM062A-EN-P - September 2012

Page 81

Module Programming 73

TIP

Program Action

At power-up in RUN mode, or when the processor is switched from PROG to RUN, the user program enables a block transfer read. Then it initiates a block transfer write to configure the module and send data values.

Thereafter, the program continuously performs read block transfers and write block transfers.

You must create the data file for the block transfers before you enter the block transfer instructions

Two’s Complement Binary

Two’s complement binary is used when performing mathematical calculations internal to the processor. To complement a number means to change it to a negative number. For example, the following binary number is equal to decimal

22.

0 101102 = 2210

First, the two’s complement method places an extra bit (sign bit) in the left–most position, and lets this bit determine whether the number is positive or negative. The number is positive if the sign bit is 0 and negative if the sign bit is 1. Using the complement method:

0 10110 = 22

To get the negative using the two’s complement method, you must invert each bit from right to left after the first ”1” is detected.

In the above example:

0 10110 = +22

Its two’s complement would be:

1 01010 = –22

Note that in the above representation for +22, starting from the right, the first digit is a 0 so it is not inverted; the second digit is a 1 so it is not inverted. All digits after this one are inverted.

If a negative number is given in two’s complement, its complement (a positive number) is found in the same way:

1 10010 = –14 0 01110 = +14

All bits from right to left are inverted after the first ”1” is detected.

Publication 1794-UM062A-EN-P - September 2012

Page 82

74 Module Programming

xxxxx

The two’s complement of 0 is not found, since no first ”1” is ever encountered in the number. The two’s complement of 0 then is still 0.

Analog Data Format

Current and Voltage Mode Values

Current (mA) 4…20 mA Mode 0…20 mA Mode Voltage (V) ± 10V Mode 0…10V Mode

The data returned from the analog-to-digital converter in the module is 12-bit resolute. This value is left-justified into a 16-bit field, reserving the most significant bit for a sign bit.

A/D unipolar data

Analog value

11 10 09 08 07 06 05 04 03 02 01 00

*

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

0

Input

A/D bipolar data

Analog value

D/A data

10 09 08 07 06 05 04 03 02 01 00

S

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

S

11 10 09 08 07 06 05 04 03 02 01 00

S

Output

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

Analog value

*

= Always positive

S

Input Output

-10.50 8000 8000

0.00 0000 -10.00 8620 8618

1.00 0618 -9.00 9250 9248

2.00 0C30 -8.00 9E80 9E78

3.00 1248 -7.00 AAB0 AAA8

4.00 0000 1860 -6.00 B6E0 B6D8

5.00 0787 1E78 -5.00 C310 C310

6.00 0F0F 2490 -4.00 CF40 CF40

7.00 1696 2AA8 -3.00 DB70 DB70

8.00 1E1E 30C0 -2.00 E7A0 E7A0

9.00 25A5 36D8 -1.00 F3D0 F3D0

10.00 2D2D 3CF0 0.00 0000 0000 0000

11.00 34B4 4310 1.00 0C30 0C30 0C30

12.00 3C3C 4928 2.00 1860 1860 1860

13.00 43C3 4F40 3.00 2490 2490 2490

14.00 4B4B 5558 4.00 30C0 30C0 30C0

15.00 52D2 5B70 5.00 3CF0 3CF0 3CF0

Publication 1794-UM062A-EN-P - September 2012

Page 83

Module Programming 75

EXAMPLE

= {[(1000 - 32)/30,840] X N13:0} + 32

F8:0

Scaled Data (degrees) @ N30:0 = {[(Desired Range)/Actual Range] X Analog Input Data} + O ffset

= F8:0 + 32

Scaled Data (degrees) @ N30:0 (See ladder logic below)= F8:0 + 32

Current and Voltage Mode Values

Current (mA) 4…20 mA Mode 0…20 mA Mode Voltage (V) ± 10V Mode 0…10V Mode

Input Output

16.00 5A5A 6188 6.00 4920 4928 4928

17.00 61E1 67A0 7.00 5550 5558 5558

18.00 6969 6DB8 8.00 6180 6188 6188

19.00 70F0 73D0 9.00 6DB0 6DB8 6DB8

20.00 7878 79E8 10.00 79E0 79E8 79E8

21.00 7FFF 7FF8 10.50 7FF0 7FF8 7FF8

Scaling Example

To scale your data to a different range:

• SLC 500 – use the scaling instruction.

• PLC-5 – determine a constant (slope) by dividing the desired prange by the actual range. Multiply the result by your data, and add or subtract any offset.

A 4…20 mA input places data at N13:0 (see figure PLC-5 Family Sample Program Structure for a 1794-OE4 Module on page 72), with a range of 0…30,840. (30,840 = 7878 hex – see table Current and Voltage Mode Values on page 74).

You want the 4…20 mA (0…30,840) to be 0…537.7°C (32…1000°F) in the PLC-5. Use the following formula:

Example using Compute Instructions

This rung scales FLEX I/O analog data to a different range. In this example, we want the 4…20 mA input data to represent 0…537.7°C (32…1000°F) in the PLC-5. N13:0 = 30,840 (7878 in hex). Two compute instructions are needed because of the way the destination value is rounded if we use an integer location

Publication 1794-UM062A-EN-P - September 2012

Page 84

76 Module Programming

CPT

COMPUTE

DESTINATION:

EXPRESSION:

((1000.000 - 32.00000)

F8:0

| 30840) * N13:0

CPT

COMPUTE

DESTINATION:

EXPRESSION:

F8:0 + 32.00000

N30:0

Scaled data

instead of a floating point in the first compute instruction. The second compute instruction has a final destination of an integer location.

Publication 1794-UM062A-EN-P - September 2012

Page 85

Index

Numerics

1794-IE12 2

compatibility 16 defaults 33 keyswitch 13 mapping 47 memory map 47 wire connections 20

1794-TB2 22 1794-TB3 22 1794-TB3G 20, 21 1794-TB3GS 20, 21

A

adapter

status word

address

node

alignment

14

bar groove 14

analog values 28

32

33

FlexBus 9, 10, 11, 14 male 9

conventions vii current

15

draw

drawn 7

current mode 28

D

daisy chain 7 daisy chaining 16 daisychain

wiring

8

data 29

output 32 real time 34

DC

common

DC power 20, 23 defaults

1794-IE12

DeviceNet Manager 31

19

33

B

backplane 31

connection 11 power 14

base unit 14 bidirectional

block transfer

block transfer

bidirectional read 67, 69 write 67, 69

C

cap plug 14 channel

28

range

combination

8

wiring

common

DC

19

configure

select bit

connection

backplane

connector

female

44

9

11

67

67

F

fault

conditions

fault conditions

input

female connector 9

mating 9

FLEX I/O

adapter

FLEX I/O system 11 FlexBus 3, 9

connector 9, 10, 11, 14

4

4

31

I

I/O map 31 I/O messages 43 I/O modules 31 Indicators 4 individual

wiring

8

input

fault conditions status 32

input status

32

word

input word 31

4

Publication 1794-UM062A-EN-P - September 2012

Page 86

78 Index

input/output

wiring

23

installation 7

K

keyswitch 14

1794-IE12 13 position 4, 13

L

Labels 4 Latching mechanism 14 locking tab

10

release

M

male connector 9 mapping

1794-IE12

mating

female connector

memory map 58

1794-IE12 47

messages

I/O

mode

PROG RUN 69, 71, 73 voltage

Module

Labels

module

input

Modules

Indicators

mounting

plate screw 12

mounting kit 12 mounting plate 12

47

43

69, 71, 73

current

4

output

4

13

9

28

31

N

node address 33

O

optional

configuration status 31

output data 32 output word 31

31

P

plate

mounting

PLC processor 67 PLC-2 processor 68 PLC-3 processor 68 PLC-5 processor 71, 75 power

DC

processor

PLC PLC-2 68 PLC-3 68 PLC-5 71, 75

PROG mode 69, 71, 73 purpose of this manual v

13

20, 23

67

R

read word 31 real time data 34 related documentation vi release locking tab 10 requirements 7 RUN mode 69, 71, 73

S

screw

mounting

select bit

configure

signal

type

signal wiring 19 status word

adapter

system

FLEX I/O

12

44

21

32

11

T

terminal base 9, 13, 33

wiring 7

two’s complement 73

Publication 1794-UM062A-EN-P - September 2012

Page 87

Index 79

V

values

analog

28

voltage mode 28

W

Wiring

module

15

wiring

combination

8

daisychain 8 individual 8 input/output 23 terminal base 7

word

input

31

output 31 read 31 write 31

write word 31

Publication 1794-UM062A-EN-P - September 2012

Page 88

80 Index

Notes:

Publication 1794-UM062A-EN-P - September 2012

Page 89

Page 90

Rockwell Otomasyon Ticaret A.Ş., Kar Plaza İş Merkezi E Blok Kat:6 34752 İçerenköy, İstanbul, Tel: +90 (216) 5698400

Rockwell Automation Support

Rockwell Automation provides technical information on the Web to assist you in using its products. At http://www.rockwellautomation.com/support/ application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools.

For an additional level of technical phone support for installation, configuration, and troubleshooting, we offer TechConnect support programs. For more information, contact your local distributor or Rockwell Automation representative, or visit http://www.rockwellautomation.com/support/

Installation Assistance

If you experience a problem within the first 24 hours of installation, review the information that is contained in this manual. You can contact Customer Support for initial help in getting your product up and running.

United States or Canada 1.440.646.3434

Outside United States or Canada

Use the Worldwide Locator your local Rockwell Automation representative.

, you can find technical manuals, a knowledge base of FAQs, technical and

.

at http://www.rockwellautomation.com/support/americas/phone_en.html, or contact

New Product Satisfaction Return

Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from the manufacturing facility. However, if your product is not functioning and needs to be returned, follow these procedures.

United States Contact your distributor. You must provide a Customer Support case number (call the phone number above to obtain

Outside United States Please contact your local Rockwell Automation representative for the return procedure.

one) to your distributor to complete the return process.

Documentation Feedback

Your comments will help us serve your documentation needs better. If you have any suggestions on how to improve this document, complete this form, publication RA-DU002

, available at http://www.rockwellautomation.com/literature/.

Publication 1794-UM062A-EN-P - September 2012

Copyright © 2012 Rockwell Automation, Inc. All rights reserved. Printed in The U.S.A.

Loading...