Rockwell Automation 1794-IF4I, 1794-OF4I, 1794-IF2XOF2I, 1794-IF4IXT, 1794-IF4ICFXT User Manual

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FLEX I/O Isolated Analog Modules

1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT,

-IF4ICFXT, -OF4IXT, IF2XOF2IXT

User Manual

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication

SGI-1.1

available from your local Rockwell Automation sales office or online at

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

differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

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

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

WARNING

Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

IMPORTANT

ATTENTION

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

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

Rockwell Automation, Allen-Bradley, FLEX, RSNetWorx, RSLogix5000, and TechConnect are trademarks of Rockwell Automation, Inc.

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

Using this Manual

Preface

Purpose of this Manual

Audience

Vocabulary

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

Except where noted, information that applies to 1794-IF4I, 1794-OF4I, and IF2XOF2I also applies to 1794-IF4IXT, 1794-IF4ICFXT, 1794-OF4IXT, and IF2XOF2IXT.

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.

In this manual, we refer to:

• the isolated analog input or isolated analog output module as

the “input module” or ‘‘output module”

• the Programmable Controller as the “controller”

Manual Organization

3 Publication 1794-6.5.8 - January 2010

This manual is divided into five chapters. The following chart lists each chapter with its corresponding title and a brief overview of the topics covered in that chapter.

Section Title Contents

Chapter 1 Overview of FLEX I/O and

your Analog Modules

Chapter 2 How to Install Your Analog

Module

Chapter 3 Module Programming Explains block transfer

Describes FLEX I/O Isolated Analog modules, features, and how they function

How to install and wire the modules

programming, sample programs

Preface 4

Section Title Contents

Chapter 4 Writing Configuration to and

Reading Status from Your Module with a Remote I/O Adapter

Chapter 5 Communication and I/O

Image Table Mapping with the DeviceNet/ControlNet Adapter

Chapter 6 Input, Output, Status and

Configuration Files for Analog Modules when used with ControlNet

Chapter 7 Calibrating Your Module Explains how to calibrate

Appendix A Specifications Specifications for the

Appendix B Class I, Division 2, Group A,

B, C, D Hazardous Locations Statement

Explains how to configure your modules and read status information from your modules when using a remote I/O adapter

Explains how you communicate with your modules, and how the I/O image is mapped when using a DeviceNet adapter

Explains how you communicate with your modules over ControlNet.

your module.

isolated analog modules Hazardous location approval

Common Techniques Used in this Manual

For Additional Information

Catalog Numbers Voltage Description Publications

1794 1794 FLEX I/O Product Data 1794-2.1 1794-ACN 24V dc ControlNet Adapter 1794-5.8 1794-ACNR 24V dc Redundant Media ControlNet Adapter 1794-5.18 1794-ADN 24V dc DeviceNet Adapter 1794-5.14 1794-6.5.5 1794-ASB/C 24V dc Remote I/O Adapter 1794-5.46 1794-6.5.9

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.

For additional information on FLEX I/O systems and modules, refer to the following documents:

Installation Instructions

User Manual

Publication 1794-6.5.8 - January 2010

Catalog Numbers Voltage Description Publications

Preface 5

Installation Instructions

1794-ASB2 24V dc 2-Slot Remote I/O Adapter 1794-5.44 1794-6.5.3 1794-TB2

1794-TB3 1794-TBN Terminal Base Unit 1794-5.16 1794-TBNF Fused Terminal Base Unit 1794-5.17 1794-TB3T Temperature Terminal Base Unit 1794-5.41 1794-TB3S Spring Clamp Terminal Base Unit 1794-5.42 1794-TB3TS Spring Clamp Temperature Terminal Base

1794-IB16 24V dc 16 Sink Input Module 1794-5.4 1794-OB16 24V dc 16 Source Output Module 1794-5.3 1794-IV16 24V dc 16 Source Input Module 1794-5.28 1794-OV16 24V dc 16 Sink Output Module 1794-5.29 1794-OB8EP 24V dc 8 Electronically Fused Output Module 1794-5.20 1794-OW8 24V dc 8 Output Relay Module 1794-5.19 1794-IB10XOB6 24V dc 10 Input/6 Output Module 1794-5.24 1794-IE8 24V dc Selectable Analog 8 Input Module 1794-5.6 1794-OE4 24V dc Selectable Analog 4 Output Module 1794-5.5 1794-6.5.2 1794-IE4XOE2 24V dc 4 Input/2 Output Analog Module 1794-5.15

2-wire Terminal Base 3-wire Terminal Base

Unit

1794-5.2

1794-5.43

User Manual

Summary

1794-IR8 24V dc 8 RTD Input Analog Module 1794-5.22 1794-6.5.4 1794-IT8 24V dc 8 Thermocouple Input Module 1794-5.21 1794-6.5.7 1794-IB8S 24V dc Sensor Input Module 1794-5.7 1794-IA8 120V ac 8 Input Module 1794-5.9 1794-OA8 120V ac Output Module 1794-5.10 1794-CE1, -CE3 Extender Cables 1794-5.12 1794-NM1 Mounting Kit 1794-5.13 1794-PS1 24V dc Power Supply 1794-5.35 1794-PS13 24V dc Power Supply 1794-5.69

This preface gave you information on how to use this manual efficiently. The next chapter introduces you to the remote I/O adapter module.

Publication 1794-6.5.8 - January 2010

Preface 6

Publication 1794-6.5.8 - January 2010

Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Preface

Using this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Vocabulary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Manual Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Common Techniques Used in this Manual . . . . . . . . . . . . . . . 4

For Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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

Table of Contents Chapter Overview of FLEX I/O and your Analog Modules

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

The FLEX I/O System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Types of FLEX I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . 12

How FLEX I/O Analog Modules Communicate with

Programmable Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Features of Your Analog Modules . . . . . . . . . . . . . . . . . . . . 14

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Chapter

How to Install Your Analog Module

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Before You Install Your Analog Module. . . . . . . . . . . . . . . . 15

Compliance to European Union Directives . . . . . . . . . . . . . . 15

EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Low Voltage Directive (to be confirmed). . . . . . . . . . . . . 16

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Installing the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Mounting the Terminal Base Unit on a DIN Rail . . . . . . . 18

Panel/Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Mounting the Analog Module on the Terminal Base Unit. 22

Connecting Wiring for the Analog Modules . . . . . . . . . . . . . 23

Connecting Wiring using a 1794-TB3, -TB3T, -TB3S or -TB3TS

Terminal Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Wiring to a 1794-TBN or 1794-TBNF Terminal Base Unit . 26

Module Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Chapter

Module Programming

7 Publication 1794-6.5.8 - January 2010

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Block Transfer Programming . . . . . . . . . . . . . . . . . . . . . . . . 31

Configuration Rungs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Example Configuration Rungs. . . . . . . . . . . . . . . . . . . . . 32

Sample Programs for FLEX I/O Analog Modules. . . . . . . . . . 33

PLC-3 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

PLC-5 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

PLC-2 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

SLC-5 Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table of Contents 8

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Chapter

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Configuring Your Analog Module . . . . . . . . . . . . . . . . . . . . 53

Range Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Safe State Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Real Time Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Input Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Reading Data From Your Module. . . . . . . . . . . . . . . . . . . . . 57

Mapping Data for the Analog Modules. . . . . . . . . . . . . . . . . 57

8 Input Analog Module (Cat. No. 1794-IF4I) . . . . . . . . . . 58

4 Isolated Output Analog Module (Cat. No. 1794-OF4I) . . 64

2 Input/2 Output Analog Combo Module (Cat. No.

1794-IF2XOF2I) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Input, Output, Status and Configuration Files for Analog Modules when used with ControlNet

Chapter

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

About RSNetWorx and RSLogix . . . . . . . . . . . . . . . . . . . . . . 77

Polled I/O Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Adapter Input Status Word . . . . . . . . . . . . . . . . . . . . . . . 78

Mapping Data into the Image Table. . . . . . . . . . . . . . . . . . . 79

4 Input Isolated Analog Module (Cat. No. 1794-IF4I) Image

Table Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

4 Output Isolated Analog Module (Cat. No. 1794-OF4I) Image

Table Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Isolated Analog Combo Module (Cat. No. 1794-IF2XOF2I

Series B) Image Table Mapping . . . . . . . . . . . . . . . . . . . 91

Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Chapter

Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

About the ControlNet Adapter . . . . . . . . . . . . . . . . . . . . . . . 99

Commun ication Over the FLEX I/O Backplane . . . . . . . . . . 99

Polled I/O Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Adapter Input Status Word . . . . . . . . . . . . . . . . . . . . . . 101

Safe State Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Communication Fault Behavior . . . . . . . . . . . . . . . . . . . . . 102

Idle State Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Input Data Behavior Upon Module Removal . . . . . . . . . . . 103

4 Input Isolated Analog Module (Cat. No. 1794-IF4I) Image

Table Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

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Calibrating Your Module

Table of Contents 9

4 Output Isolated Analog Module (Cat. No. 1794-OF4I) Image

Table Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Isolated Analog Combo Module (Cat. No. 1794-IF2XOF2I)

Image Table Mapping . . . . . . . . . . . . . . . . . . . . . . . . . 113

Chapter

Chapter Objective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

When and How to Calibrate Your Isolated Analog Module . 119

Tools and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Calibrating Your Isolated Analog Input Module . . . . . . . . . 121

Bits Used During Calibration . . . . . . . . . . . . . . . . . . . . 121

Offset Calibration for Inputs . . . . . . . . . . . . . . . . . . . . . 122

Setting the Input Gain . . . . . . . . . . . . . . . . . . . . . . . . . 124

Calibrating Your Isolated Analog Output Module . . . . . . . . 125

Bits Used During Calibration . . . . . . . . . . . . . . . . . . . . 125

Calibrating Voltage Outputs . . . . . . . . . . . . . . . . . . . . . 126

Offset Calibration for Voltage Outputs 126 Gain Calibration for Outputs 127

Calibrating Current Outputs . . . . . . . . . . . . . . . . . . . . . 128

Gain Calibration for Current Outputs 128 Offset Calibration for Current Outputs 128 Final Gain Calibration for Current Inputs 130

Scaling Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Scaling Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Specifications

Class I, Division 2, Group A, B, C, D Hazardous Locations Statement Index

Appendix

Filter Response for 150Hz, 300Hz and 600Hz Conversion 134

Appendix

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Table of Contents 10

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Chapter

Overview of FLEX I/O and your Analog Modules

Chapter Objectives

The FLEX I/O System

Adapter Terminal Base I/O Module

In this chapter, we tell you about:

• what the FLEX I/O system is and what it contains

• types of FLEX I/O analog modules

• how FLEX I/O analog modules communicate with

programmable controllers

• the features of your analog modules

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 in

Figure 1.1

Figure 1.1:

20125

• 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 specific functions related to your application

11 Publication 1794-6.5.8 - January 2010

12 Overview of FLEX I/O and your Analog Modules

Types of FLEX I/O Modules

Catalog Number Voltage Inputs Outputs Description

1794-IF4I 24V dc 4 – analog – 4 input, isolated

1794-OF4I 24V dc – 4 analog – 4 output, isolated

1794-IF2XOF2I 24V dc 2 2 analog – 2 input, isolated and 2 output, isolated

We describe the following FLEX I/O Analog modules in this user manual:

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:

Input Values Data Format Underrange/Overrange

4–20mA signed 2’s complement 4% Underrange, 4% Overrange ±10V signed 2’s complement 2% Underrange, 2% Overrange ±5V signed 2’s complement 4% Underrange, 4% Overrange 0–20mA signed 2’s complement % 0% Underrange, 4% Overrange 4-20mA signed 2’s complement % 4% Underrange, 4% Overrange 0–10V signed 2’s complement % 0% Underrange, 2% Overrange ±10V signed 2’s complement % 2% Underrange, 2% Overrange 0–20mA binary 0% Underrange, 4% Overrange 4–20mA binary 4% Underrange, 4% Overrange 0–10V binary 0% Underrange, 2% Overrange 0–5V binary 0% Underrange, 4% Overrange ±20mA offset binary, 8000H = 0mA 4% Underrange, 4% Overrange 4–20mA offset binary, 8000H = 4mA 4% Underrange, 4% Overrange ±10V offset binary, 8000H = 0V 2% Underrange, 2% Overrange ±5V offset binary, 8000H = 0V 4% Underrange, 4% Overrange

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Overview of FLEX I/O and your Analog Modules 13

How FLEX I/O Analog Modules Communicate with Programmable Controllers

The adapter transfers your configuration data to the module using a BTW.

Allen-Bradley

ADAPTER

ACTIVE FAULT

LOCAL FAULT

POWER SUPPLY

RIO ADAPTER

1794-ASB

24VDC

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. Figure 1.2 describes the communication process.

Figure 1.2 An Example of Communication Between an Adapter and an Analog Input Module

Flexbus

Your ladder program instructs the adapter to perform a BTR of the values and stores them in a data table.

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

Allen-Bradley

ANALOG INPUT

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

VI VI VI VI VI VI VI V

External devices transmit analog signals to the module.

1794±IE8

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

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.

Your ladder program performs BTWs to the module when you power it up, and any time you wish to reconfigure the module.

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14 Overview of FLEX I/O and your Analog Modules

Features of Your Analog Modules

Each module has a unique label identifying its keyswitch position, wiring and module type. A removable label provides space for writing individual designations per your application.

1794-IF4I

Module Type

Removable Label

Keyswitch Position Indicator (#3)

Input Designators

1794-OF4I

Output Designators

Green Power/Status Indicator

Module Type

Removable Label

Keyswitch Position Indicator (#4)

Green Power/Status Indicator

Summary

1794-IF2XOF2I

Module Type

Removable Label

Keyswitch Position Indicator (#5)

Input and Output Designators

Green Power/Status Indicator

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 1794-6.5.8 - January 2010

How to Install Your Analog Module

Chapter

Chapter Objectives

Before You Install Your Analog Module

Compliance to European Union Directives

In this chapter, we tell you about:

• how to install your module

• how to set the module keyswitch

• how to wire the terminal base

• the indicators

Before installing your analog module in the I/O chassis:

You need to: As described under:

Calculate the power requirements of all modules in each chassis.

Position the keyswitch on the terminal base Mounting the Analog Module on the

If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

Power Requirements, page 2-16

Terminal Base Unit, page 2-22

EMC Directive

This product is tested to meet Council Directive 2004/10/EC Electromagnetic Compatibility (EMC) and the following standards, in whole or in part, documented in a technical construction file:

• European Union 2004/108/EC EMC Directive, compliant with: EN 61326-1; Meas./Control/Lab., Industrial Requirements EN 61000-6-2; Industrial Immunity EN 61000-6-4; Industrial Emissions EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)

• European Union 2006/95/EC LVD, compliant with: EN 61131-2; Programmable Controllers (Clause 11)

This product is intended for use in an industrial environment.

15 Publication 1794-6.5.8 - January 2010

16 How to Install Your Analog Module

Low Voltage Directive

This product is tested to meet Council Directive 2006/95/EC Low Voltage, by applying the safety requirements of EN 61131–2 Programmable Controllers, Part 2 – Equipment Requirements and Tests.

For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as the following Allen-Bradley publications:

• Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1

• Guidelines for Handling Lithium Batteries, publication AG-5.4

• Automation Systems Catalog, publication B111

Open style devices must be provided with environmental and safety protection by proper mounting in enclosures designed for specific application conditions. See NEMA Standards publication 250 and IEC publication 529, as applicable, for explanations of the degrees of protection provided by different types of enclosure.

Power Requirements

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 10A.

ATTENTION

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

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How to Install Your Analog Module 17

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

Daisy-chaining

Individual

ATTENTION

24V dc

Do not daisy chain power or ground from an analog terminal base unit to any ac or dc discrete module terminal base unit.

Note: All modules must be analog modules for this configuration.

Wiring

when total current draw is less than 10A

Combination

24V dc

24V dc or 120V ac

24V dc

Analog module wiring separate from discrete wiring.

iring when total current draw is greater than 10A

Note: All modules powered by the same power supply must be analog modules for this configuration.

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

Note: Use this configuration if using any ªnoisyº dc discrete I/O modules in your system.

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18 How to Install Your Analog Module

Installing 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

Mounting the Analog Module on the

Terminal Base Unit on page 2-22.

Mounting the Terminal Base Unit on a DIN Rail

ATTENTION

1. Remove the cover plug (if used) in the male connector of the

unit to which you are connecting this terminal base unit.

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.

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.

3. Position the terminal base on the 35 x 7.5mm DIN rail A (A-B pt. no. 199-DR1; 46277-3; EN 50022) at a slight angle with hook B on the left side of the terminal base hooked into the right side of the unit on the left. Proceed as follows:

Figure 2.1

Position terminal base at a slight angle and hooked over the top of the DIN rail.

Publication 1794-6.5.8 - January 2010

Figure 2.2

How to Install Your Analog Module 19

Slide the terminal base unit over tight against the adapter. Make sure the hook on the terminal base slides under the edge of the adapter and the flexbus connector is fully retracted.

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.

Gently push the flexbus connector into the side of the adapter to complete the backplane connection.

4. Repeat steps 1 - 3 to install the next terminal base.

Publication 1794-6.5.8 - January 2010

30077-M

20 How to Install Your Analog Module

Panel/Wall Mounting

Installation 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 “Mounting the Analog Module on the Terminal Base” on .

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

1794-NM1

1 ± Mounting Plate for Adapter 2 ± 18 #6 self-tapping screws

(2 for the adapter, and 2 each for up to 8 modules)

Mounting Kit

Contents:

Adapter Module (not included)

Terminal Base Unit

(not included)

Publication 1794-6.5.8 - January 2010

How to Install Your Analog Module 21

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.

Figure 2.3 Drilling Dimensions for Panel/Wall Mounting of FLEX I/O

Inches (Millimeters)

.83 (21)

1.4 (35.5)

2.3 (58.5)

1.4 (35.5)

2.3 (58.5)

1.4 (35.5)

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

3. Mount the mounting plate (1) for the adapter module using two #6 self-tapping screws (18 included for mounting up to 8 modules and the adapter).

IMPORTANT

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 (2) 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.

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

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22 How to Install Your Analog Module

Mounting the Analog Module on the Terminal Base Unit

1. Rotate the keyswitch (1) on the terminal base unit (2) clockwise to the position required for the specific type of analog module.

Figure 2.4

Analog Module Catalog Number Keyswitch Position

1794-IF4I, 1794-IF4IXT, 1794-IF4ICFXT 3

1794-OF4I, 1794-OF4IXT 4

1794-IF2XOF2I, 1794-IF2XOF2IXT 5

2. Make certain the flexbus connector (3) is pushed all the way to the left to connect with the neighboring terminal base/adapter.

You cannot install the module unless the connector is fully extended.

3. Make sure that the pins on the bottom of the module are straight

so they will align properly with the connector in the terminal base unit.

4. Position the module (4) with its alignment bar (5) aligned with the groove (6) on the terminal base.

Publication 1794-6.5.8 - January 2010

5. Press firmly and evenly to seat the module in the terminal base unit. The module is seated when the latching mechanism (7) is locked into the module.

How to Install Your Analog Module 23

6. Repeat the above steps to install the next module in its terminal base unit.

Connecting Wiring for the Analog Modules

ATTENTION

Remove field-side power before removing or inserting the module. This module is designed so you can remove and insert it under backplane power. When you remove or insert a module with field-side power applied, an electrical arc may occur. An electrical arc can cause personal injury or property damage by:

• sending an erroneous signal to your system’s field

devices causing unintended machine motion

• causing an explosion in a hazardous environment

Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance.

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

Refer to the following table for recommended terminal base units that you can use for each module.

Module 1794-TB3 1794-TBT 1794-TB3S 1794-TB3TS 1794-TB3S 1794-TBN,

-TBNF

1794-IF4I, 1794-IF4IXT,

1794-IF4ICFXT

1794-OF4I, 1794-OF4IXT Yes Yes Yes Yes Yes Yes

1794-IF2XOF2I,

1794-IF2XOF2IXT

Yes Yes Yes Yes Yes Yes

Figure 2.5

1794-TB3, -TB3T 1794-TB3S, -TB3TS 1794-TBNF 1794-TBN

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24 How to Install Your Analog Module

Connecting wiring for the individual analog modules is shown on:

Module Connecting Wiring

1794-IF4I, 1794-IF4IXT, 1794-IF4ICFXT page 2-26

1794-OF4I, 1794-OF4IXT

1794-IF2XOF2I, 1794-IF2XOF2IXT page 2-27

Connecting Wiring using a 1794-TB3, -TB3T, -TB3S or -TB3TS 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-IF4I – the associated terminal on row A.

1794-OF4I – the corresponding terminal on the same row (A)

1794-IF4XOF2I – inputs – the associated terminal on row A; outputs – the corresponding terminal on the same row (A).

3. Refer to Table 2.1 or Table 2.2. Connect +24V dc to designated terminals on the 34-51 row (C), and 24V common todesignated 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 33 ft (10m) for dc power cabling.

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How to Install Your Analog Module 25

ATTENTION

• sending an erroneous signal to your system’s field

devices causing unintended machine motion

• causing an explosion in a hazardous environment

Repeated electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance.

±15

A B C

0 16±33 34±51

1794-TB3, -TB3T

Row A Row B Row C

Row A

Row B

Row C

1794-TB3S, -TB3TS

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

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26 How to Install Your Analog Module

Wiring to a 1794-TBN or 1794-TBNF Terminal Base Unit

1. Connect individual input or output wiring to the even numbered terminals on row (B) as indicated in the table below.

2. Connect the associated return wiring to the corresponding odd numbered terminal on row (C) for each input or output as indicated in the table below.

3. Connect 24V dc to terminal 34 on row (C).

4. Connect 24V dc common to terminal 16 on row (B).

5. If continuing power to the next terminal base unit, connect a

jumper from terminal 51 (24V dc) on this base unit to terminal 34 on the next base unit.

16 33Even

0246810121433

13 57 9 11131551

34 51

Numbered T

Odd Numbered Terminals 1 thru 15

erminals 0 thru 14

1794-TBN, 1794-TBNF

16,

0, 2, 4, 6,

8, 10, 12, 14, 33

34, 1, 3, 5, 7, 9, 11, 13, 15, 51

If continuing common to the next terminal base unit, connect a jumper from terminal 33 (24V dc common) on this base unit to termi

nal 16 on the next base unit.

Table 2.1

Wiring connections for 1794-TB3, -TB3T, -TB3S, -TB3TS, -TBN and -TBNF Terminal Base Units when using the 1794-IF4I or 1794-OF4I Isolated Analog Module

Channel Signal Type Label Markings

0 Current I0 0

Current I0 Ret 1 Voltage V0 2 Voltage V0 Ret 3

1 Current I1 4

1794-TB3, -TB3T1, -TB3S, -TB3TS 1794-TBN, 1794-TBNF

Signal

Signal Return

Term in al

(2)

Publication 1794-6.5.8 - January 2010

Current I1 Ret 5 Voltage V1 6 Voltage V1 Ret 7

How to Install Your Analog Module 27

Table 2.1

Wiring connections for 1794-TB3, -TB3T, -TB3S, -TB3TS, -TBN and -TBNF Terminal Base Units when using the 1794-IF4I or 1794-OF4I Isolated Analog Module

Channel Signal Type Label Markings

1794-TB3, -TB3T1, -TB3S, -TB3TS 1794-TBN, 1794-TBNF

Signal

Signal Return

Term in al

2 Current I2 8

Current I2 Ret 9 Voltage V2 10 Voltage V2 Ret 11

3 Current I3 12

Current I3 Ret 13 Voltage V3 14 Voltage V3 Ret 15

24V dc Common

1794-TB3 – 16 through 33

(1)

1794-TB3T, -TB3TS – 17, 18, 33

1794-TBN, -TBNF – 16 and 33

+24V dc power 1794-TB3 – 34 thru 51

1794-TB3T, -TB3TS – 34, 35, 50, 51

1794-TBN, -TBNF – 34 and 51

(1)

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

(2)

Terminal 39 through 46 are chassis ground. Terminals 36, 37, 38 and 47, 48, 49 are used or cold junction compensation.

(2)

Table 2.2

Wiring connections for the 1794-IF2XOF2I Isolated Analog Module when using 1794-TB3,

-TB3T, -TB3S, -TB3TS, -TBN and -TBNF Terminal Base Units

Channel Signal Type Label Markings

1794-TB3, -TB3T

(2)

-TB3TS

Signal

(2)

, -TB3S,

-TBN, -TBNF

Signal Return

Term in al

Input 0 Current I0 0

Current I0 Ret 1 Voltage V0 2 Voltage V0 Ret 3

Input 1 Current I1 4

Current I1 Ret 5 Voltage V1 6 Voltage V1 Ret 7

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28 How to Install Your Analog Module

Table 2.2

Wiring connections for the 1794-IF2XOF2I Isolated Analog Module when using 1794-TB3,

-TB3T, -TB3S, -TB3TS, -TBN and -TBNF Terminal Base Units

Channel Signal Type Label Markings

Output 0 Current I2 8

Current I2 Ret 9 Voltage V2 10 Voltage V2 Ret 11

Output 1 Current I3 12

Current I3 Ret 13 Voltage V3 14 Voltage V3 Ret 15

24V dc Common

1794-TB3 – 16 thru 33

1794-TB3T, -TB3TS – 17, 18, 33

1794-TBN, -TBNF – 16 and 33

+24V dc power 1794-TB3 – 34 thru 51

1794-TB3T, -TB3TS – 34, 35, 50, 51

1794-TBN, -TBNF – 34 and 51

1794-TB3, -TB3T

(2)

-TB3TS

-TBN, -TBNF

Signal Term in al

(2)

, -TB3S,

Signal Return

(1)

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

(2)

Terminal 39 through 46 are chassis ground. Terminals 36, 37, 38 and 47, 48, 49 are used or cold junction compensation.

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 1794-6.5.8 - January 2010

1794-IF4I

Figure 2.6

Connections ± 1794-TB3 terminal base shown

How to Install Your Analog Module 29

0 ±15

16±33

34±51

1794-OF4I

I I I I

+±

Current

Input

+±

ac or dc

4-Wire Current

Transmitter

Current

Input

dc only

3-Wire Current

Transmitter

Connections ± 1794-TB3 terminal base shown

+±

Current Output Device

+±

I I

Current Output Device

±±

Current

Input

Current only

2-Wire Current

Transmitter and External

Power Supply

Current

±±

Output Device

24V

Power Supply

Voltage

Input

dc only

3-Wire

Transmitter

Voltage Output Device

±±

0 ±15

16±33

34±51

1794-IF2XOF2I

ac or dc

4-Wire Output

Device

dc only

3-Wire Output

Device

Connections ± 1794-TB3 terminal base shown

I I

+±

Current

Input

+±

ac or dc

4-Wire Current

Transmitter

Current

Input

dc only

3-Wire Current

Transmitter

±±

Current only

2-Wire Output

Device

Current Output Device

Current only

2-Wire Output

Device

dc only

3-Wire Output

Device

Voltage Output Device

dc only

3-Wire Output

Device

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0 ±15

16±33

34±51

30 How to Install Your Analog Module

Module Indicators

The analog modules have one status indicator that is on when power is applied to the module.

1794-IF4I

1794-OF4I

OK Status Indicator ± Indicates power applied to module and status. When flashing, examine module status word.

1794-IF2XOF2I

Chapter Summary

Publication 1794-6.5.8 - January 2010

In this chapter you learned how to install your input module in an existing programmable controller system and how to wire to the terminal base units.

Module Programming

Chapter

Chapter Objectives

Block Transfer Programming

In this chapter, we tell you about:

• analog data format

• block transfer programming

• configuration rungs

• sample programs for the PLC-3 and PLC-5 processors

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 filters and signal 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.

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.

31 Publication 1794-6.5.8 - January 2010

32 Module Programming

Configuration Rungs

Example Configuration Rungs

It is necessary to toggle the IC bit isolated analog modules to accept configuration data. Once the configuration data has been properly set up, the following rung will reconfigure the module (this example represents sizes for the 1794-IF4I module).

Power-up Bit

B12:15

FP Bit B12:15 B12:15 B12:54

If there are rungs which already perform reads and writes to the module, no additional rungs are necessary. A simplified example of a BTR and BTW rung for an 1794-IF4I follow (the 1794-OF4I is read length 6, write length 7; the 1794-IF2XOF2I is read length 7, write length 7):

(1)

(initiate configuration) for the

CF Bit

IC Bit

B12:54

L 14

BTR Enable Bit

N13:10

BTW Enable Bit

N3:0

PU Bit

N12:15

Optional

BTR BLOCK

TRANSFER READ

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH: CONTINUOUS: N

BTW BLOCK

TRANSFER WRITE

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH: CONTINUOUS: N

N13:10 N12:10

N13:0

N12:50

An XIC ( ––] [–– ) instruction of the Power Up bit (PU) can be inserted to allow BTWs only when the module requires configuration (PU = 1).

Publication 1794-6.5.8 - January 2010

(1)

For systems that do not require ladder program control of configuration, set the TR bit (bit 13) to 1. Refer to Chapter 1.

Module Programming 33

Sample Programs for FLEX I/O Analog Modules

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:

• configure the module

• read data from the module

• update the module’s output channels (if used)

With RSLogix5000, just read or write the tags provided. RSLogix will perform the transfer so an explicit block transfer is not required.

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

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

Figure 1.1, and described below.

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34 Module Programming

Figure 1.1 PLC-3 Family Sample Program Structure for a 1794-IF4I 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.

This rung toggles the Initate Configuration bit from 0 to 1 to 0

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.

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

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.

This rung toggles the Initate Configuration bit from 0 to 1 to 0

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.

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

BTR

BLOCK XFER READ RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH:

CF Bit

B4:5

BTW BLOCK XFER WRITE

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH:

Power-up Bit

B4:5

Power-up Bit

B4:5

Block Transfer Read Done Bit

B3:0

FP Bit

B4:5

Block Transfer W

rite Done Bit

B3:0

Figure 1.2 PLC-3 Family Sample Program Structure for a 1794-OF4I Module

BTR BLOCK XFER READ

RACK: GROUP: MODULE: CONTROL: DATA FILE:

LENGTH:

CF Bit

B7:4

BTW

BLOCK XFER WRITE RACK:

GROUP: MODULE:

CONTROL: DATA FILE: LENGTH:

Power-up Bit

B7:4

Block Transfer Read Done Bit

B6:0

FP Bit

B7:4

Block Transfer

rite Done Bit

B6:0

#B3:0 #B4:0

#B3:0 #B5:0

#B6:0 #B7:0

#B6:0 #B8:0

Enable

Done

Error

IC Bit

B5:4

L 14

Enable

Done

Error

Enable

Done

Error

IC Bit

B8:6

Enable

Done

Error

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Module Programming 35

Figure 1.3 PLC-3 Family Sample Program Structure for a 1794-IF2XOF2I 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.

This rung toggles the Initate Configuration bit from 0 to 1 to 0

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.

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

Power-up Bit

B10:5

Block Transfer Read Done Bit

B9:0

FP Bit

B10:5 B10:5

Block Transfer W

rite Done Bit

B9:0

BTR BLOCK XFER READ

RACK: GROUP: MODULE: CONTROL: DATA FILE:

LENGTH:

CF Bit

BTW BLOCK XFER WRITE

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH:

#B9:0

#B10:0

#B9:0

#B11:0

Enable

02 02

Done

Error

IC Bit

B11:6

L 14

Enable

02 02

Done

Error

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.

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36 Module Programming

Figure 1.4 PLC-5 Family Sample Program Structure for the 1794-IF4I

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.

This rung toggles the Initate Configuration bit from 0 to 1 to 0

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 to configure the module.

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

BTR Enable Bit

N13:10

Power-up Bit

N12:55

BTR BLOCK

TRANSFER READ

FP Bit

N12:55 N12:55 N12:64

RACK: GROUP: MODULE:

CONTROL: DATA FILE:

LENGTH: CONTINUOUS: N

CF Bit

Power-up

Bit

N12:55

BTW Enable Bit

N13:0

BTW BLOCK

TRANSFER WRITE

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH: CONTINUOUS: N

N13:10 N12:50

THIS BIT

N13:0

N12:60

1 0

IC Bit

N12:64

MUST

BE 1

Publication 1794-6.5.8 - January 2010

Figure 1.5 PLC-5 Family Sample Program Structure for the 1794-OF4I

Module Programming 37

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.

This rung toggles the Initate Configuration bit from 0 to 1 to 0

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.

BTR Enable Bit

N15:10

Power-up Bit

N14:14

BTW Enable Bit

N15:0

BTR BLOCK

TRANSFER READ

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH: CONTINUOUS: N

FP Bit N14:14 N14:14 N14:56

CF Bit

BTW BLOCK

TRANSFER WRITE

RACK: GROUP:

MODULE: CONTROL:

DATA FILE: LENGTH: CONTINUOUS: N

N15:10 N14:10

N15:0

N14:50

2 0 0

THIS BIT

2 0

IC Bit

N14:56

MUST

BE 1

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38 Module Programming

Figure 1.6 PLC-5 Family Sample Program Structure for the 1794-IF2XOF2I

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.

This rung toggles the Initate Configuration bit from 0 to 1 to 0

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.

BTR Enable Bit

N17:10

Power-up Bit

N16:15

BTW Enable Bit

N17:0

BTR BLOCK

TRANSFER READ

FP Bit

RACK: GROUP: MODULE: CONTROL: DATA FILE:

LENGTH: CONTINUOUS: N

CF Bit

BTW BLOCK

TRANSFER WRITE

RACK: GROUP: MODULE: CONTROL: DATA FILE: LENGTH: CONTINUOUS: N

N17:10 N16:10

N17:0

N16:50

2 3 0

THIS BIT

2 3 0

IC Bit

N16:56N16:15 N16:15

N16:56

MUST

BE 1

SLC-5 Programming

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.

The SLC-5 programs (using the 1747-SN scanner) follow the same logic as the PLC-5 family programs in the previous examples. Differences occur in the implementation of block transfers due to the use of “M” files in the SLC system.

Configuration data for the FLEX I/O isolated analog modules and the 1747-SN scanner must be in place before executing the following programs. Chapter 4 contains information on the isolated analog module configurations.

For more information on using the 1747-SN scanner module and block transfer programming, refer to publication 1747-6.6, “Remote I/O Scanner User Manual.”

Publication 1794-6.5.8 - January 2010

Module Programming 39

Figure 1.7 SLC Programming for the 1794-OF4I Isolated Analog Output Module

Program

rung configures the block transfer operation

This type, length, and RIO address at power-up. Bit B3:100/7 must be set to 1 to indicate a BTR and bit B3:1

BTR status is copied to the B3:0 area when a BTR is in progress.

Unlatch the bit that continues to check the BTR status.

Action

10/7 must be 0 to indicate a BTW

0000

0001

0002

PowerUp Bit

S2:1

BTR PENDING

B3:5

CHECK BTR ST

B3:5

BTR DONE BIT

B3:0

ATUS

BTR_CONTROL

COP COPY FILE SOURCE DEST LENGTH

BTW_CONTROL

COP COPY FILE SOURCE DEST

LENGTH

COP COPY FILE SOURCE DEST

LENGTH

#B3:100

#M0:1.100

#B3:110

#M0:1.200

#M1:1.100

#B3:0

CHECK BTR ST

ATUS

B3:5

0003

BTW status is copied to the B3:100 area when a BTW is in progress.

0004

Unlatch the bit that continues to check the BTW status.

o next page.

BTR ERROR BIT

B3:0

BTW PENDING

B3:15

CHECK BTW ST

B3:15

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

ATUS

COP COPY FILE SOURCE DEST

LENGTH

#M1:1.200

#B3:10

CHECK BTW ST

ATUS

B3:15

Publication 1794-6.5.8 - January 2010

40 Module Programming

Program

rung buf

This is successfully completed.

This rung buf not successful.

Action

fers the BTR data when a transfer

fers the error code if a BTR is

0005

0006

BTR DONE BIT

B3:0

BTR DONE BIT

B3:0

COP COPY FILE SOURCE DEST LENGTH

MOV MOVE SOURCE

DEST

#M1:1.110

#N7:0

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

CHECK BTR ST

B3:5

#M1:1.103

#N7:6

ATUS

This rung manipulates the flags for the BTW

0007

o next page.

BTW DONE BIT

B3:10

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

CHECK BTR ST

B3:5

BTW PENDING

B3:15

BTW ENABLE BIT

B3:110

CHECK BTW ST

B3:15

ATUS

Publication 1794-6.5.8 - January 2010

Module Programming 41

Program

This rung buf not successful.

rung executes BTRs continuously

This

Action

fers the error code if a BTW is

BTW ERROR BIT

0008

0009

B3:10

BTR ENABLE BIT BTR DONE BIT

B3:100

B3:0

MOV MOVE SOURCE

DEST

BTR ERROR BIT

B3:0

#M1:1.203

#N7:17

BTW PENDING

B3:15

BTW ENABLE BIT

CHECK BTW ST

B3:110

ATUS

B3:15

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

This rung copies the wirte data to the M0 file and executes BTWs continuously data for the FLEX module should be placed in the wirte data.

. The configuration

0010

BTW ENABLE BIT

B3:110

o next page.

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

COP COPY FILE SOURCE DEST LENGTH

BTW ENABLE BIT

#N7:10

#M1:1.210

B3:110

BTW PENDING

B3:15

Publication 1794-6.5.8 - January 2010

42 Module Programming

Program

This BTR control word is moved to the M0 file for the scanner module.

This

BTW control word is moved to the M0 file

for the scanner module.

Action

0011

0012

BTR ENABLE BIT

B3:100

BTR DONE BIT

B3:0

BTR ERROR BIT

B3:0

BTW ENABLE BIT

B3:110

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

BTR CONTROL

MOV MOVE SOURCE

DEST

BTW CONTROL

MOV MOVE SOURCE

DEST

00000001000000<

B3:100

M0:1.100

B3:110

00000001000000<

M0:1.200

This rung toggles the initiate configuration bit from 0 to 1 to 0.

0013

0014

POWERUP BIT

N7:4

FP BIT

N7:4

CF BIT

N7:4

IC BIT N7:16

THIS BIT

MUST

N7:16

END

BE 1

Publication 1794-6.5.8 - January 2010

Module Programming 43

Figure 1.8 SLC Programming for the 1794-IF4I Isolated Analog Input Module

Program

rung configures the block transfer operation

This type, length, and RIO address at power-up. Bit B3:100/7 must be set to 1 to indicate a BTR and bit B3:1

BTR status is copied to the B3:0 area when a BTR is in progress.

Action

10/7 must be 0 to indicate a BTW

0000

0001

PowerUp Bit

S2:1

BTR PENDING

B3:5

CHECK BTR ST

B3:5

ATUS

BTR_CONTROL

COP COPY FILE SOURCE DEST LENGTH

BTW_CONTROL

COP COPY FILE SOURCE DEST

LENGTH

COP COPY FILE SOURCE DEST

LENGTH

#B3:100

#M0:1.100

#B3:110

#M0:1.200

#M1:1.100

#B3:0

0002

Unlatch the bit that continues to check the BTR status.

0003

BTW status is copied to the B3:100 area when a BTW is in progress.

BTR DONE BIT

B3:0

BTR ERROR BIT

B3:0

BTW PENDING

B3:15

CHECK BTW ST

B3:15

o next page.

ATUS

COP COPY FILE SOURCE DEST

LENGTH

CHECK BTR ST

#M1:1.200

#B3:10

ATUS

B3:5

Publication 1794-6.5.8 - January 2010

44 Module Programming

Program

Unlatch

This rung buf is successfully completed.

Action

the bit that continues to check the BTW status.

fers the BTR data when a transfer

0004

0005

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

BTR DONE BIT

B3:0

COP COPY FILE SOURCE DEST

LENGTH

CHECK BTW ST

#M1:1.110

#N7:0

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

CHECK BTR ST

B3:5

ATUS

B3:15

ATUS

This rung buf not successful.

fers the error code if a BTR is

0006

BTR ERROR BIT

o next page.

B3:0

MOV MOVE

SOURCE

DEST

M1:1.103

N7:7

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

CHECK BTR ST

B3:5

ATUS

Publication 1794-6.5.8 - January 2010

Module Programming 45

Program

This rung manipulates the flags for the BTW

This rung buf not successful.

Action

fers the error code if a BTW is

BTW DONE BIT

0007

0008

B3:10

BTW ERROR BIT

B3:10

MOV MOVE SOURCE

DEST

BTW ENABLE BIT

CHECK BTW ST

BTW PENDING

BTW ENABLE BIT

CHECK BTW ST

M1:1.203

N7:15

BTW PENDING

B3:15

B3:110

B3:15

B3:110

B3:15

ATUS

This

rung executes BTRs continuously

BTR ENABLE BIT BTR DONE BIT

0009

B3:100

o next page.

B3:0

BTR ERROR BIT

B3:0

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

Publication 1794-6.5.8 - January 2010

46 Module Programming

Program

This rung executes a BTW to configure the module when the power-up bit (PU) is set.

This BTR control word is moved to the M0 file for the scanner module.

Action

0010

0011

PU BIT

N7:5

BTR ENABLE BIT

BTR ERROR BIT

BTW ENABLE

B3:100

BTR DONE BIT

B3:0

BIT

B3:110

BTW DONE

B3:10

BTW ERROR

BITBIT

B3:10

BTR CONTROL

MOV MOVE SOURCE

DEST

COP COPY FILE SOURCE DEST

LENGTH

00000001000000<

BTW ENABLE BIT

BTW PENDING

B3:100

M0:1.100

#N7:10

#M0:1.210

B3:110

B3:15

This

BTW control word is moved to the M0 file

for the scanner module.

This rung toggles the initiate configuration bit from 0 to 1 to 0.

0012

0013

BTW ENABLE BIT

B3:110

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

POWERUP BIT

N7:5

BTR CONTROL

MOV MOVE SOURCE

DEST

FP BIT

N7:5

CF BIT

N7:5

00000001000000<

B3:110

M0:1.200

THIS BIT

IC BIT

N7:14

MUST

BE 1

N7:14

Publication 1794-6.5.8 - January 2010

0014

END

Program

rung configures the block transfer operation

This type, length, and RIO address at power-up. Bit B3:100/7 must be set to 1 to indicate a BTR and bit B3:1

Action

10/7 must be 0 to indicate a BTW

Module Programming 47

Figure 1.9 SLC Programming for the 1794-IF2XOF2I Isolated Analog Input/Output Module

PowerUp Bit

S2:1

0000

BTR_CONTROL

COP COPY FILE SOURCE DEST LENGTH

BTW_CONTROL

COP COPY FILE SOURCE DEST

LENGTH

#B3:100

#M0:1.100

#B3:110

#M0:1.200

0001

BTR status is copied to the B3:0 area when a BTR is in progress.

0002

Unlatch the bit that continues to check the BTR status.

0003

BTW status is copied to the B3:100 area when a BTW is in progress.

BTR PENDING

B3:5

CHK BTR ST

BTR DONE BIT

BTR ERROR BIT

BTW PENDING

CHK BTW STATUS

ATUS

B3:5

B3:0

B3:5

COP COPY FILE SOURCE DEST LENGTH

COP COPY FILE SOURCE DEST

LENGTH

#M1:1.100

#B3:0

#M1:1.100

#B3:0

CHK BTR ST

B3:5

ATUS

0004

BTW PENDING

B3:15

CHK BTW STATUS

B3:15

o next page.

COP COPY FILE SOURCE DEST

LENGTH

#M1:1.200

#B3:10

Publication 1794-6.5.8 - January 2010

48 Module Programming

Program

Unlatch

This rung buf is successfully completed.

Action

the bit that continues to check the BTW status.

fers the BTR data when a transfer

0005

0006

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

BTR DONE BIT

B3:0

COP COPY FILE SOURCE DEST

LENGTH

CHK BTW STATUS

#M1:1.110

#N7:0

BTR PENDING

B3:5

B3:100

B3:5

ATUS

BTR ENABLE BIT

CHK BTR ST

B3:15

This rung buf not successful.

fers the error code if a BTR is

0007

BTR DONE BIT

o next page.

B3:0

MOV MOVE

SOURCE

DEST

M1:1.103

N7:7

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

CHECK BTR ST

B3:5

ATUS

Publication 1794-6.5.8 - January 2010

Module Programming 49

Program

This rung manipulates the flags for the BTW

This rung buf not successful.

Action

fers the error code if a BTW is

BTW DONE BIT

0008

0009

B3:10

BTW ERROR BIT

B3:10

MOV MOVE SOURCE

DEST

BTW ENABLE BIT

CHK BTW STATUS

BTW PENDING

BTW ENABLE BIT

CHECK BTW ST

M1:1.203

N7:17

BTW PENDING

B3:15

B3:110

B3:15

B3:110

B3:15

ATUS

rung executes BTRs continuously

This

BTR ENABLE BIT BTR DONE BIT

0010

B3:100

o next page.

B3:0

BTR ERROR BIT

B3:0

BTR PENDING

B3:5

BTR ENABLE BIT

B3:100

Publication 1794-6.5.8 - January 2010

50 Module Programming

Program

This rung executes a BTW to configure the module when the power-up bit is set. The configuration data for the FLEX module should be placed in the wirte data.

This BTR control word is moved to the M0 file for the scanner module.

This for the scanner module.

Action

BTW control word is moved to the M0 file

0011

0012

0013

BTR ENABLE BIT

B3:100

BTR DONE BIT

B3:0

BTR ERROR BIT

B3:0

BTW ENABLE BIT

B3:110

BTW DONE BIT

B3:10

BTW ENABLE

BIT

B3:110

BTW DONE BIT

B3:10

BTW ERROR BIT

B3:10

BTR CONTROL

MOV MOVE SOURCE

DEST

BTR CONTROL

MOV MOVE SOURCE

DEST

00000001000000<

00000000000000<

COP COPY FILE SOURCE DEST LENGTH

BTW ENABLE BIT

BTW PENDING

B3:100

M0:1.100

B3:110

M0:1.200

#N7:10

#M0:1.210

B3:110

B3:15

This rung toggles the initiate configuration bit from 0 to 1 to 0.

Publication 1794-6.5.8 - January 2010

0014

0015

0016

BTW ERROR BIT

B3:10

POWERUP BIT

N7:5

FP BIT

N7:5

Thereafter

, the program continuously performs read block transfers.

CF BIT

N7:5

MOV MOVE SOURCE

DEST

THIS BIT

N7:0

N7:11

IC BIT

N7:16

MUST

N7:16

END

BE 1

Module Programming 51

Chapter Summary

In this chapter, you learned how to program your programmable controller. You were given sample programs for your PLC-3 and PLC-5 family processors.

Publication 1794-6.5.8 - January 2010

52 Module Programming

Publication 1794-6.5.8 - January 2010

Chapter

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Chapter Objectives

Configuring Your Analog Module

In this chapter, we tell you about:

• configuring your module’s features

• entering your data

• reading data from your module

• read block format

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

• data type (two’s complement, two’s complement percent, binary

and offset binary)

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.

TIP

53 Publication 1794-6.5.8 - January 2010

RSLogix family programmable controllers that use RSLogix software programming tools can take advantage of the configuration GUI to configure these modules.

54 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Range Selection

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

Table 4.1 Range Selection

Input channel Configuration Input Values Data Format % Underrange/

% Overrange

Channel not configured 4–20mA signed 2’s complement 4% Under; 4% Over ±10V signed 2’s complement 2% Under, 2% Over ±5V signed 2’s complement 4% Under, 4% Over 0–20mA signed 2’s complement % 0% Under, 4% Over 4-20mA signed 2’s complement % 4% Under, 4% Over 0–10V signed 2’s complement % 0% Under, 2% Over ±10V signed 2’s complement % 2% Under, 2% Over 0–20mA binary 0% Under, 4% Over 0–10V binary 0% Under, 2% Over 0–5V binary 0% Under, 4% Over

Safe State Selection

±20mA offset binary, 8000H = 0mA 4% Under, 4% Over 4–20mA offset binary, 8000H = 4mA 4% Under, 4% Over ±10V offset binary, 8000H = 0V 2% Under, 2% Over ±5V offset binary, 8000H = 0V 4% Under, 4% Over

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

You can select the analog values that your output module will maintain in the event of a network communication error. When the enable bit is cleared by a communication error, the analog outputs will automatically switch to the values set in the safe state analog words as defined by the safe state source bits. This allows you to select a reset to 0V/0mA, or hold the outputs at their last state when using the remote I/O adapter on remote I/O. Additionally, safe state values can be setup using ControlNet, DeviceNet or other network adapter.

Data Format

Publication 1794-6.5.8 - January 2010

The input/output data exchanged between the module and the adapter is available in two’s complement, two’s complement percent, binary and offset binary (refer to the range selection table above).

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 55

Real Time Sampling

Real time sampling (RTS) provides data gathered at precise intervals for use by the processor. You set a word in the block transfer write data file to enable RTS.

The real time sample programmed interval is the time at which updated information will be supplied to the processor. When set to “0” the module will default to each channel’s fastest update rate, which is dependent on the nominal range of the input and the filter setting set to “no low pass.”

When the IT interrupt toggle bit is set (1), interleaving of module interrupts occurs, ensuring exchange of critical data when channels are configured for their fastest update times. RTSI and “no low pass filter” must be 0 in order for the module to recognize this feature. This groups data update rates for all channels to the slowest configuration setting of any of the channels. In addition, channel update rates for all channels with a 7.5ms update rate are reduced to 5.0ms. When reset (0), real time sampling and filter features are enabled.

Table 4.2 Real Time Sample Interval

Configuration Nominal Range Channel

Update Rate (RTS = 0)

1 4-20mA 7.5ms 5.0ms 2 ±10V 2.5ms 2.5ms 3 ±5V 2.5ms 2.5ms 4 0-20mA 7.5ms 5.0ms 5 4-20mA 7.5ms 5.0ms 6 0-10V 5.0ms 5.0ms 7 ±10V 5.0ms 5.0ms 8 0-20mA 2.5ms 2.5ms 9 4-20mA 7.5ms 5.0ms A 0-–10V 2.5ms 2.5ms B 0-5V 2.5ms 2.5ms C ±20mA 2.5ms 2.5ms D 4-20mA 7.5ms 5.0ms E ±10V 2.5ms 2.5ms F ±5V 2.5ms 2.5ms

(1)

Channel filter set to “no low pass.”

(1)

Channel Update Rate (RTS and Filter = 0)

(1)

and IT = 1

Publication 1794-6.5.8 - January 2010

56 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

The real time sample interval can be set from 0 to 30s, in increments of 5ms. Set the real time sample interval in binary using 15 bits in the block transfer write word.

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Word 3 0 Real Time Sample Programmed Interval

The individual channel update times determines how fast you can get new information collectively from the module. The module gathers the data from each input and makes it available to the processor. For example, if channel 0 is 2.5ms, channel 1 is 5.0ms, and channel 2 is

7.5ms, and RTS = 0, each channel will be updated at its stated rate. If RTS is set to 5ms, only channels 0 and 1 are fast enough to be included in the real time sample. In order to include channel 2 in your synchronous sample, you must set the RTS to 10ms minimum. Your updated information will be accurate for all inputs/outputs as viewed at the last update before the time of your request.

Slowest

Channel Update T

Internal R

TS Timer = 10ms

ime= 7.5ms

ATTENTION

Do not set your real time sample interval less than the slowest channel’s update time.

TS updated

4 inputs and R

10 20 30 40

5101520 307.5 27.5 37.53525 40

TS updated

4 inputs and R

17.5

TS updated

4 inputs and R

TS updated

4 inputs and R

Input Filtering

Publication 1794-6.5.8 - January 2010

The input modules have selectable input filtering built into the A/D converter. The filter attenuates the input signal beginning at the speci fied frequency. You can select from 150, 300, 600, and 1200Hz with low pass filters of none, 100ms, 500ms or 1000ms. Each channel filter

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 57

can be set individually. Select the filter based on your system requirements.

A/D Conversion Rate Low Pass Filter

1200Hz No low pass 1200Hz 100ms low pass 1200Hz 500ms low pass 1200Hz 1000ms low pass 600Hz No low pass 600Hz 100ms low pass 600Hz 500ms low pass 600Hz 1000ms low pass 300Hz No low pass 300Hz 100ms low pass 300Hz 500ms low pass 300Hz 1000ms low pass

Reading Data From Your Module

Mapping Data for the Analog Modules

150Hz No low pass 150Hz 100ms low pass 150Hz 500ms low pass 150Hz 1000ms low pass

Read programming moves status and data from the module to the processor’s data table. The processor’s user program initiates the request to transfer data from the input module (or combination module) to the processor.

The following 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.

Publication 1794-6.5.8 - January 2010

58 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

8 Input Analog Module (Cat. No. 1794-IF4I)

Module

Image

Table 4.3 Analog Input Module (1794-IF4I) Read

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

I/O Image

Input Size

1 to 7 Words

Output Size

0 to 5 Words

Input Data Channel 0 Input Data Channel 1 Input Data Channel 2 Input Data Channel 3

Real Time Sample

PU FP CF BD DN

UnderrangeOverrange

Set to 0EN

Channel

Filters

Channel Configuration

Real Time Sample Programmed Interval

RV QK CK GO

Channel #

Read Word 0 Analog Value Channel 0 Word 1 Analog Value Channel 1 Word 2 Analog Value Channel 2 Word 3 Analog Value Channel 3 Word 4 Real Time Sample Word 5 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0 Word 6 0 0 0 0 0 0 0 0 V3 V2 V1 V0 U3 U2 U1 U0 Where:

PU = Power up unconfigured state FP = Field power off CF = In configuration mode BD = Calibration bad DN = Calibration accepted U = Under range for specified channel V = Overrange for specified channel

Publication 1794-6.5.8 - January 2010

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 59

Table 4.4 Word/Bit Descriptions for the 1794-IF4I Analog Input Module

Read Word Decimal Bit

Definition

(Octal Bit)

Word 0 Bits 00-15

(00-17)

Word 1 Bits 00-15

(00-17)

Word 2 Bits 00-15

(00-17)

Word 3 Bits 00-15

(00-17)

Word 4 Bits 00-15

(00-17)

Channel 0 analog data – Real time input data per your configuration

Channel 1 analog data – Real time input data per your configuration

Channel 2 analog data – Real time input data per your configuration

Channel 3 analog data – Real time input data per your configuration

Real Time Sample. The elapsed time in increments programmed by the real time sample interval.

Word 5 Bits 00 Reserved

Bits 01 Calibration Done bit (DN). – This bit is set to 1 after a

calibration cycle is

Bits 02 Calibration Bad bit (BD). – This bit is set to 1 if the channel

calibration Bits 03–07 Set to 0. Bits 08–11

Reserved (10-12)

Bit 12 (14) Set to 0 Bit 13 (15) Configuration mode bit (CF) – This bit is set (1) when the

calibration mode is selected (bit 15, word 5 in the block

transfer write set to 1). When this bit is set (1), the module

status indicator flashes. Bit 14 (16) Field Power Off bit (FP) – This bit is set (1) when the 24V

field power fails. When this bit is set (1), the module status

indicator flashes. Bit 15 (17) Power Up (unconfigured state) bit (PU). – This bit is set (1)

when the configuration word is all zeroes (0) due to a reset

(adapter power cycle or module insertion) or a cleared

configuration word (all 0). When this bit is set (1), the module

status indicator flashes.

Word 6 Bits 00-03 Underrange bits (U). – These bits are set (1) when the input

channel is below a preset limit as defined by the configuration

selected. U0 (bit 00) corresponds to input channel 0 and U1 (bit

01) corresponds to input channel 1, etc. Refer to Table 4.B.

Bits 04-07 Overrange bits (V). – These bits are set (1) when the input

channel is above a preset limit as defined by the configuration

selected. Bit 04 corresponds to input channel 0 and bit 05

Bits 08–15

corresponds to input channel 1, etc. Refer to

Not used. Set to 0.

Table 4.8.

(10-17)

Publication 1794-6.5.8 - January 2010

60 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.5 Analog Input Module (1794-IF4I) Write Configuration Block

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Word 0 EN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Word 1 Chnl 3 Filter Chnl 2 Filter Chnl 1 Filter Chnl 0 Filter Word 2 Chnl 3 Configuration Chnl 2 Configuration Chnl 1 Configuration Chnl 0 Configuration Word 3 0 Real Time Sample Programmed Interval Word 4 IC 1 TR IT 0 0 0 0 RV QK CK GO Channel Number Where:

EN = Not used on the 1794-IF4I. IC = Initiate configuration bit TR = Transparent bit IT = Interrupt Toggle bit RV = Revert to defaults bit QK = Quick calibration CK = Calibration clock GO = Gain offset select

Table 4.6 Word/Bit Descriptions for the 1794-IF4I Analog Input ModuleWrite

Write Word Decimal Bit (Octal

Definition

Bit)

Word 0 Bits 00–14 (00–16) Not used. Set to 0.

Bit 15 (17) Output enable bit (EN). – Not used in the 1794-IF4I module.

Word 1 Channels 0 through 3 Filter Selections (refer to Table 4.7 )

Bits 00–03 Channel 0 Filter Setting Bits 04–07 Channel 1 Filter Setting Bits 08–11 (10–13) Channel 2 Filter Setting Bits 12–15 (14–17) Channel 3 Filter Setting

Word 2 Channel Configuration (refer to Table 4.B )

Bits 00–03 Channel 0 Configuration Bits 04–07 Channel 1 Configuration Bits 08–11 (10–13) Channel 2 Configuration Bits 12–15 (14–17) Channel 3 Configuration

Word 3 Bits 00–14 (00–16) Real Time Sample Interval – Programs the interval of the real time sample. Can be varied

from 0 to 30 seconds (30000 decimal). Resolution is in ms with granularity in 5ms steps.

Bit 15 (17) Not used. Set to 0.

Publication 1794-6.5.8 - January 2010

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 61

Table 4.6 Word/Bit Descriptions for the 1794-IF4I Analog Input ModuleWrite

Write Word Decimal Bit (Octal

Definition

Bit)

Word 4 Bit 00–03 Channel calibration selection bit. When this bit is set (1), the channel can be calibrated

using the calibration clock bit (CK). Bit 00 corresponds to input channel 0, bit 01 corresponds to input channel 1, it 02 corresponds to input channel 2, bit 03 corresponds to input channel 3

Bit 04 Gain/Offset selection bit (GO). – When this bit is cleared, a 0 to 1 to 0 transition of the CK

bit performs on offset calibration. When this bit is 1, the module is directed to do a gain calibration.

Bit 05 Calibration clock bit (CK). – When this bit is set to 1 (calibration mode), the calibration

coeffiicient for the selected channels is accepted. When this bit is reset (0), the accepted calibration coefficients for the selected channels are stored, applied, and the calibration mode exited. Monitor status bits DN and BD for succesful calibration.

Bit 06 Quick Calibration bit (QK). – Normally reset (0). When this bit is set (1) during a calibration

sequence, the calibration coefficient is stored to all related configurations for the selected channels. NOTE: This method of calibration quickly calibrates the selected channels, however you will not be within the rated accuracy of the module.

Bit 07 Revert to defaults bit (RV). – Normally reset (0). When set (1) during a calibration procedure,

default values for selected channels are used for the calibration coefficient.NOTE: You will not be within the rated accuracy of the module.

Bits 08-11 (10-13) Not used. Set to 0.

For IF4ICFXT only: Bit 8 — FastStepResponse (FR) forces the A/D to skip the FIR stage if an input step occurs. An averaging algorithm is temporarily used instead of the FIR filter in the A/D to provide a quicker response. Bit 9 — FIRFilterDisable (SK) bypasses the FIR filter stage in the A/D. Bit 10 — ChopModeDisable (CH) disables the chop mode in the A/D. Chop mode is used to

reduce offsets between input and output of the analog section of the A/D.

(1)

Note: Module level settings that only affect 150 Hz, 300 Hz, and 600 Hz conversion rate settings.

Bit 12 (14) Interrupt Toggle bit (IT) – This bit, when set (1), permits interleaving of module interrupts

ensuring exchange of critical data when channels are configured for their fastest update times. RTSI and “no low pass filter” must be 0 in order for the module to recognize this feature. This groups data update rates for all channels to the slowest configuration setting of any of the channels. In addition, channel update rates for all channels with a 7.5ms update rate are reduced to 5.0ms. When reset (0), real time sampling and filter features are enabled.

Bit 13 (15) Transparent bit (TR). – This bit, when set to 1, permits configuration to be changed without

using the IC bit. Default setting for this bit is True (1)

Bit 14 (16) Always set to 1. Bit 15 (17) Initiate Configuration bit (IC). – When set (1), instructs the module to enter configuration

mode. Present configuration data prior to or coincident with IC being set. Once IC returns to 0, the configuration is applied and any subquent configuration information is ignored until IC is toggled.

(1)

For changes in tag values like the CH bit in the IF4ICFXT to take effect, the tag either must be included in a ladder rung or or a configuration download forced using the configuration tab in the RSLogix GUI.

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62 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.7 Setting the Input Filter

Bits Channel

03 02 01 00 Input 0 07 06 05 04 Input 1 11 10 09 08 Input 2 15 14 13 12 Input 3

A/D Conversion Rate

0 0 0 0 1200Hz No low pass 0 0 0 1 1200Hz 100ms low pass 0 0 1 0 1200Hz 500ms low pass 0 0 1 1 1200Hz 1000ms low pass 0 1 0 0 600Hz No low pass 0 1 0 1 600Hz 100ms low pass

Low Pass Filter

Table 4.8 Configuring Your Input Module

Input Channel Configuration

03 02 01 00 Set these bits for Channel 0 07 06 05 04 Set these bits for Channel 1 11 10 09 08 Set these bits for Channel 2 15 14 13 12 Set these bits for Channel 3

0 1 1 0 600Hz 500ms low pass 0 1 1 1 600Hz 1000ms low pass 1 0 0 0 300Hz No low pass 1 0 0 1 300Hz 100ms low pass 1 0 1 0 300Hz 500ms low pass 1 0 1 1 300Hz 1000ms low pass 1 1 0 0 150Hz No low pass 1 1 0 1 150Hz 100ms low pass 1 1 1 0 150Hz 500ms low pass 1 1 1 1 150Hz 1000ms low pass

Publication 1794-6.5.8 - January 2010

Table 4.8 Configuring Your Input Module

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 63

Bit Settings Input

Values

Data Format % Underrange

%Overrange

0 0 0 0 Channel not configured 0 0 0 1 4–20mA signed 2’s complement 4% Under; 4%

Over

0 0 1 0 ±10V signed 2’s complement 2% Under, 2%

Over

0 0 1 1 ±5V signed 2’s complement 4% Under, 4%

Over

0 1 0 0 0–20mA signed 2’s complement %0% Under, 4%

Over

0 1 0 1 4-20mA signed 2’s complement %4% Under, 4%

Over

0 1 1 0 0–10V signed 2’s complement %0% Under, 2%

Over

0 1 1 1 ±10V signed 2’s complement %2% Under, 2%

Over

1 0 0 0 0–20mA binary 0% Under, 4%

Over

Input Range

(2)

Module Update Rate

Hexadecimal Decimal (RTSI = 0)(RTSI =

0) IT = 1

<0000–7878> <0000–30840> 7.5ms 5.0ms

<831F–7CE1> <–31969–

2.5ms 2.5ms

31969>

<8618–79E8> <–31208–

2.5ms 2.5ms

31208>

0–2710> 0–10000> 7.5ms 5.0ms

<0–2710> <0–10000> 7.5ms 5.0ms

0–2710> 0–10000> 5.0ms 5.0ms

<–D8F0–2710> <–10000–

5.0ms 5.0ms

10000>

0000–F3CF> 0000–62415> 2.5ms 2.5ms

1 0 0 1 4–

20mA

binary 4% Under, 4%

(1)

Over

1 0 1 0 0–10V binary 0% Under, 2%

Over

1 0 1 1 0–5V binary 0% Under, 4%

Over

1 1 0 0 ±20mA offset binary, 8000H =

0mA

1 1 0 1 4–20mA offset binary, 8000H =

4mA

4% Under, 4% Over

1 1 1 0 ±10V offset binary, 8000H = 0V2% Under, 2%

Over

1 1 1 1 ±5V offset binary, 8000H = 0V4% Under, 4%

Over

(1)

Underrange for 4-20mA occurs in the blind area below 0 (3.2mA).

(2)

< and > indicate the overrun beyond actual range (about 5%).

0000–F0F1> 0000–61681> 7.5ms 5.0ms

0000–F9C2> 0000–63938> 2.5ms 2.5ms

0000–F3CF> 0000–62415> 2.5ms 2.5ms

<0618–F9E8> <1560–63976> 2.5ms 2.5ms

<8000–F878> <32768–63608> 7.5ms 5.0ms

<031F–FCE1> <799–64737> 2.5ms 2.5ms

<0618–F9E8> <1560–63976> 2.5ms 2.5ms

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64 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

4 Isolated Output Analog Module (Cat. No. 1794-OF4I)

Module

Image

Table 4.9 Analog Output Module (1794-OF4I) Read

I/O Image

Input Size

0 to 6 Words

Output Size

2 to 7 Word

Read Back Channel 0 Read Back Channel 1 Read Back Channel 2 Read Back Channel 3

PU FP CF BD DN

Hold

Outputs

S1 S0

IC RV QK CK GO

1 Q3 Q2 Q1 Q0TR IT

Set to 0EN

Output Data Channel 0 Output Data Channel 1

Output Data Channel 2 Output Data Channel 3

Channel Configuration

Wire-off

Channel #

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Read Word 0 Read Back Channel 0 Word 1 Read Back Channel 1 Word 2 Read Back Channel 2 Word 3 Read Back Channel 3 Word 4 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0 Word 5 0 0 0 0 P3 P2 P1 P0 0 0 0 0 W3 W2 W1 W0 Where:

PU = Power up unconfigured state FP = Field power off CF = In configuration mode BD = Calibration bad DN = Calibration accepted P0 thru P3 = Output holding in response to Q0 thru Q3 W0 thru W3 = Wire off current loop status for channels 0 thru 3 respectively. (Not used on voltage outputs.)

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Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 65

Table 4.10 Bit/Word Descriptions for the 1794-OF4I Analog Output Module Read

Read Word Decimal Bit

Definition

(Octal Bit)

Word 0 Bits 00-15 (00-17) Read Back Channel 0 – During normal operation, it is a copy of the output of channel

0. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 1 Bits 00-15 (00-17) Read Back Channel 1 – During normal operation, it is a copy of the output of channel

1. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 2 Bits 00-15 (00-17) Read Back Channel 2 – During normal operation, it is a copy of the output of channel

2. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 3 Bits 00-15 (00-17) Read Back Channel 3 – During normal operation, it is a copy of the output of channel

3. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 4 Bits 00 Reserved

Bits 01 Calibration Done bit (DN). – This bit is set to 1 after a calibration cycle is completed. Bit 02 Calibration Bad bit (BD). – This bit is set to 1 if the channel calibration coefficients

cannot be saved or read properly. Bits 03–07 Set to 0. Bits 08–11

Reserved (10-12)

Bit 12 (14) Set to 0 Bit 13 (15) Configuration mode bit (CF) – This bit is set (1) when the configuration mode is

selected (bit 15, word 5 in the block transfer write set to 1). When this bit is set, the

module status indicator flashes. Bit 14 (16) Field Power Off bit (FP) – This bit is set (1) when the 24V field power fails. When this

bit is set (1), the module status indicator flashes. Bit 15 (17) Power Up (unconfigured state) bit (PU). – This bit is set (1) when the configuration

word is all zeroes (0) due to a reset (adapter power cycle or module insertion) or a cleared

configuration word (all 0). When this bit is set, the module status indicator flashes.

Word 5 Bits 00–03 Wire-Off status bits. (W). – These bits, when set (1), indicate the corresponding

current output channel is open. W0 corresponds to channel 0, W1 corresponds to

channel 2, etc. Bits 04–07 Set to 0. Bits 10–11

(12-13)

Hold output bits (P). – These bits are set (1) in response to Q0 or Q1 and a transition of

the EN bit. When P0 or P1 is set (1), they indicate that the output is holding at the level in

the readback data for the respective channel. These bits return to 0 when the output data

matches the readback output data. Bits 12–15

Set to 0. (14-17)

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66 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.11 Analog Output Module (1794-OF4I) Write Configuration Block

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Write Word 0 EN S1 S0 0 0 0 0 0 0 0 0 0 0 0 0 0 Word 1 Output Data – Channel 0 Word 2 Output Data – Channel 1 Word 3 Output Data – Channel 2 Word 4 Output Data – Channel 3 Word 5 Output Chnl 3

Configuration

Output Chnl 2 Configuration

Output Chnl 1

Configuration Word 6 IC 1 TR IT Q3 Q2 Q1 Q0 RV QK CK GO Channel Number Where:

EN = Enable outputs; 0 = output follows S1/S0, 1 = output enabled IC = Initiate configuration bit TR = Transparent bit IT = Interrupt Toggle bit Q0–3 = Request for outputs to hold RV = Revert to defaults bit QK = Quick calibration CK = Calibration clock GO = Gain offset select

Output Chnl 0 Configuration

Table 4.12 Range Selection Bits and Real Time Output Update Rate for the 1794-OF4I Isolated Output Module

Configuration Bits Nominal MSD LSD Hexadecimal Decimal

Range

Data Type Output Values Update

0 0 0 1 4-20mA 2’s complement <0000–7878> <0000–30840> 5.0ms 0 0 1 0 ±10V 2’s complement <8618–79E8> <–31208–31208> 2.5ms 0 0 1 1 ±5V 2’s complement <8618–79E8> <–31208–31208> 2.5ms 0 1 0 0 0-20mA 2’s complement % 0–10000> 0–10000> 5.0ms 0 1 0 1 4-20mA 2’s complement % <0–10000> <0–10000> 5.0ms 0 1 1 0 0-10V 2’s complement % 0–10000> 0–10000> 5.0ms 0 1 1 1 ±10V 2’s complement <–10000–10000> <–10000–10000> 5.0ms 1 0 0 0 0-20mA binary 0000–F3CF> 0000–62415> 2.5ms 1 0 0 1 4-20mA binary 0000–F0F1> 0000–61681> 5.0ms 1 0 1 0 0-–10V binary 0000–F3CF> 0000–62415> 2.5ms 1 0 1 1 0-5V binary 0000–F3CF> 0000–62415> 2.5ms 1 1 0 0 ±20mA offset binary <8000–F9E8> 32768–63976> 2.5ms 1 1 0 1 4-20mA offset binary <8000–F878> <32768–63608> 5.0ms

Rate

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Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 67

Table 4.12 Range Selection Bits and Real Time Output Update Rate for the 1794-OF4I Isolated Output Module

1 1 1 0 ±10V offset binary <0618–F9E8> <1560–63976> 2.5ms 1 1 1 1 ±5V offset binary <0618–F9E8> <1560–63976> 2.5ms

Table 4.13 Word/Bit Descriptions for the 1794-OF4I Analog Output Module

Write Word Decimal Bit

Definition

(Octal Bit)

Word 0 Bits 00–14

Not used

(00–16) Bits 13–14

(15-16)

Safe State Source bits (S1/S0). – When EN is 0, these bits designate the source of the safe state data. Bit 13 = 0, bit 14 = 1 – reset outputs to 0V/0mA (used with 1794-ASB/C) Bit 13 = 1, bit 14 = 1 – hold output at its current level (used with 1794-ASB/C) Bit 13 = 0; bit 14 = 0 – Safe state data is in output data words

Bit 15 (17) Output enable bit (EN). – When set (1), the outputs are enabled. This bit must be set

in order for the real time data to appear at the outputs. If this bit is not set (0), the outputs will be determined by S1/S0.

Word 1 Bits 00–15

(00–17)

Word 2 Bits 00–15

(00-17)

Word 3 Bits 00–15

(00-17)

Word 4 Bits 00–15

(00-17)

Channel 0 output data. – The output data is real time data formatted to the selected configuration. (This data is also safe state data when directed by S1 and S0.)

Channel 1 output data. – The output data is real time data formatted to the selected configuration. (This data is also safe state data when directed by S1 and S0.)

Channel 2 output data. – The output data is real time data formatted to the selected configuration. (This data is also safe state data when directed by S1 and S0.)

Channel 3 output data. – The output data is real time data formatted to the selected configuration. (This data is also safe state data when directed by S1 and S0.)

Word 5 Channel Configuration (refer to page 4-66)

Bits 00–03 Channel 0 Configuration Bits 04–07 Channel 1 Configuration Bits 08–11

Channel 2 Configuration

(10-13) Bits 12–15

Channel 3 Configuration

(14-17)

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68 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.13 Word/Bit Descriptions for the 1794-OF4I Analog Output Module

Write Word Decimal Bit

Definition

(Octal Bit)

Word 6 Bit 00–03 Channel calibration selection bit. When this bit is set (1), the channel can be

calibrated using the calibration clock bit (CK). Bit 00 corresponds to output channel 0, bit 01 corresponds to output channel 1, it 02 corresponds to output channel 3, bit 03 corresponds to output channel 4

Bit 04 Gain/Offset selection bit (GO). – When this bit is cleared, a 0 to 1 to 0 transition of

the CK bit performs on offset calibration. When this bit is 1, the module is directed to do a gain calibration.

Bit 05 Calibration clock bit (CK). – When this bit is set to 1 (calibration mode), the

calibration coeffiicient for the selected channels is accepted. When this bit is reset (0), the accepted calibration coefficients for the selected channels are stored, applied, and the calibration mode exited. Monitor status bits DN and BD for succesful calibration.

Bit 06 Quick Calibration bit (QK). – Normally reset (0). When this bit is set (1) during a

calibration sequence, the calibration coefficient is stored to all related configurations for the selected channels. NOTE: Although this method of calibration quickly calibrates the selected channels, they will not be within the rated accuracy of the module.

Bit 07 Revert to defaults bit (RV). – Normally reset (0). When set (1) during a calibration

procedure, default values for selected channels are used for the calibration coefficient. NOTE: They will not be within the rated accuracy of the module.

Bits 08–11 (10–13)

Request for hold outputs (Q). – Channel request bits that instruct an output to hold its output level when EN transitions from 1 to 0 to 1. When EN is 0, outputs go to a safe state dictated by S1/S0. When EN returns to 1, the outputs will hold their level until the output data equals the output level. P0–P3 indicates channels holding. Output read back data shows what level is being held. Q0 = bit 08 (10) = channel 0; Q1 = bit 09 (11) = channel 1, etc.

Bit 12 (14) Interrupt Toggle bit (IT) – This bit, when set (1), permits interleaving of module

interrupts ensuring exchange of critical data when channels are configured for their fastest update times. RTSI and “no low pass filter” must be 0 in order for the module to recognize this feature. This groups data update rates for all channels to the slowest configuration setting of any of the channels. In addition, channel update rates for all channels with a 7.5ms update rate are reduced to 5.0ms. When reset (0), real time sampling and filter features are enabled.

Bit 13 (15) Transparent bit (TR). – This bit, when set to 1, permits configuration to be changed

Bit 14 (16) Set to 1 Bit 15 (17) Initiate Configuration bit (IC). – When set (1), instructs the module to enter

Publication 1794-6.5.8 - January 2010

without using the IC bit.

configuration mode. Present configuration data prior to or coincident with IC being set. Once IC returns to 0, the configuration is applied and any subquent configuration information is ignored until IC is toggled.

Read

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 69

2 Input/2 Output Analog Combo Module (Cat. No. 1794-IF2XOF2I)

Module

Image

I/O Image Input Size 0 to 7 Words

PU FP CF BD DN

Input Data Channel 0 Input Data Channel 1

Read Back Output Data Channel 0 Read Back Output Data Channel 1

Real Time Sample

V1 V0 U1 U0W1 W0P1 P0

Write

Table 4.14 Analog Combo Module (1794-IF2XOF2I) Read

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Read Word 0 Input Data Channel 0 Word 1 Input Data Channel 1 Word 2 Read Back Output Channel 0 Word 3 Read Back Output Channel 1 Word 4 0 Real Time Sample

Output Size

0 to 7 Words

Set to 0EN S1 S0 Output Data Channel 0 Output Data Channel 1

Channel Filters

Channel

Configuration

Real Time Sample Programmed Interval

IC RV QK CK GO

Q0Q1TR IT

Channel #

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70 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.14 Analog Combo Module (1794-IF2XOF2I) Read

Word 5 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0 Word 6 0 0 0 0 P1 P0 0 0 0 0 V1 V0 W1 W0 U1 U0 Where:

PU = Power up unconfigured state FP = Field power off CF = In configuration mode BD = Calibration bad DN = Calibration accepted P0 and P1 = Output holding in response to Q0 thru Q1 W0 and W1 = Wire off current loop status for input channels 0 and 1 respectively. (Not used on voltage outputs.) U0 and U1 = Underrange for input channels o and 1 respectively. V0 and V1 = Overrange for input channels o and 1 respectively.

Table 4.15 Configuring Your Input Channels

Input Channel Configuration

03 02 01 00 Set these bits for Channel 0 07 06 05 04 Set these bits for Channel 1 Bit Settings Input

Values

Data Format % Underrange

%Overrange

Input Range

Hexadecimal Decimal (RTSI = 0)(RTSI =

0 0 0 0 Channel not configured

(2)

Module Update Rate

0) IT = 1

0 0 0 1 4–20mA signed 2’s complement 4% Under; 4%

Over

0 0 1 0 ±10V signed 2’s complement 2% Under, 2%

Over

0 0 1 1 ±5V signed 2’s complement 4% Under, 4%

Over

0 1 0 0 0–20mA signed 2’s complement %0% Under, 4%

Over

0 1 0 1 4-20mA signed 2’s complement %4% Under, 4%

Over

0 1 1 0 0–10V signed 2’s complement %0% Under, 2%

Over

0 1 1 1 ±10V signed 2’s complement %2% Under, 2%

Over

1 0 0 0 0–20mA binary 0% Under, 4%

Over

1 0 0 1 4–

20mA

Publication 1794-6.5.8 - January 2010

binary 4% Under, 4%

(1)

Over

<0000–7878> <0000–30840> 7.5ms 5.0ms

<831F–7CE1> <–31969–

2.5ms 2.5ms

31969>

<8618–79E8> <–31208–

2.5ms 2.5ms

31208>

0–2710> 0–10000> 7.5ms 5.0ms

<0–2710> <0–10000> 7.5ms 5.0ms

0–2710> 0–10000> 5.0ms 5.0ms

<–D8F0–2710> <–10000–

5.0ms 5.0ms

10000>

0000–F3CF> 0000–62415> 2.5ms 2.5ms

0000–F0F1> 0000–61681> 7.5ms 5.0ms

Table 4.15 Configuring Your Input Channels

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 71

1 0 1 0 0–10V binary 0% Under, 2%

Over

1 0 1 1 0–5V binary 0% Under, 4%

Over

1 1 0 0 ±20mA offset binary, 8000H =

0mA

1 1 0 1 4–20mA offset binary, 8000H =

4mA

4% Under, 4% Over

1 1 1 0 ±10V offset binary, 8000H = 0V2% Under, 2%

Over

1 1 1 1 ±5V offset binary, 8000H = 0V4% Under, 4%

Over

(1)

Underrange for 4-20mA occurs in the blind area below 0 (3.2mA).

(2)

< and > indicate the overrun beyond actual range (about 5%).

Table 4.16 Setting the Input Filter

Bits Channel

03 02 01 00 Input Channel 0

0000–F9C2> 0000–63938> 2.5ms 2.5ms

0000–F3CF> 0000–62415> 2.5ms 2.5ms

<0618–F9E8> <1560–63976> 2.5ms 2.5ms

<8000–F878> <32768–63608> 7.5ms 5.0ms

<031F–FCE1> <799–64737> 2.5ms 2.5ms

<0618–F9E8> <1560–63976> 2.5ms 2.5ms

07 06 05 04 Input Channel 1

A/D Conversion

Low Pass Filter

Rate

0 0 0 0 1200Hz No low pass 0 0 0 1 1200Hz 100ms low pass 0 0 1 0 1200Hz 500ms low pass 0 0 1 1 1200Hz 1000ms low pass 0 1 0 0 600Hz No low pass 0 1 0 1 600Hz 100ms low pass 0 1 1 0 600Hz 500ms low pass 0 1 1 1 600Hz 1000ms low pass 1 0 0 0 300Hz No low pass 1 0 0 1 300Hz 100ms low pass 1 0 1 0 300Hz 500ms low pass 1 0 1 1 300Hz 1000ms low pass 1 1 0 0 150Hz No low pass 1 1 0 1 150Hz 100ms low pass 1 1 1 0 150Hz 500ms low pass 1 1 1 1 150Hz 1000ms low pass

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72 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.17 Word/Bit Descriptions for the 1794-IF2XOF2I Isolated Analog Combo Module Read

Write Word Decimal Bit

Definition

(Octal Bit)

Word 0 Bits 00–15

Input Channel 0 input data – Real time input data per your configuration

(00–17)

Word 1 Bits 00–15

Input Channel 1 input data – Real time input data per your configuration

(00–17)

Word 2 Bits 00–15

(00–17)

Read Back Output Channel 0 – During normal operation, it is a copy of the output of channel 0. During an EN transition, it is the condition of the output as determined by S1 and S0. Note: Read back data is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 3 Bits 00–15

(00–17)

Read Back Output Channel 1 – During normal operation, it is a copy of the output of channel 1. During an EN transition, it is the condition of the output as determined by S1 and S0. Note: Read back data is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 4 Bits 00–15

(00–17)

Real Time Sample. The elapsed time in increments programmed by the real time sample interval.

Word 5 Bits 00 Reserved

Bits 01 Calibration Done bit (DN). – This bit is set to 1 after a calibration cycle is completed. Bits 02 Calibration Bad bit (BD). – This bit is set to 1 if the channel calibration coefficients

cannot be saved or read properly. Bits 03-07 Set to 0. Bits 08-11

Reserved (10-12)

Bit 12 (14) Set to 0 Bit 13 (15) Configuration mode bit (CF) – This bit is set (1) when the configuration mode is

selected (bit 15, word 6 in the block transfer write set to 1). When this bit is set (1), the

module status indicator flashes. Bit 14 (16) Field Power Off bit (FP) – This bit is set (1) when the 24V field power fails. When this

bit is set (1), the module status indicator flashes. Bit 15 (17) Power Up (unconfigured state) bit (PU). – This bit is set (1) when the configuration

word is all zeroes (0) due to a reset (adapter power cycle or module insertion) or a

cleared configuration word (all 0). When this bit is set (1), the module status indicator

flashes.

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Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 73

Table 4.17 Word/Bit Descriptions for the 1794-IF2XOF2I Isolated Analog Combo Module Read

Write Word Decimal Bit

(Octal Bit)

Word 6 Bits 00-01 Underrange bits (U). – These bits are set (1) when the input channel is below a preset

Bits 02-03 Wire-Off status bits. (W). – These bits, when set (1), indicate the corresponding

Bits 04-05 Overrange bits (V). – These bits are set (1) when the input channel is above a preset

Bits 06-09 (06-11)

Bits 10-11 (12-13)

Bits 12-15 (14-17)

Table 4.18 Analog Combo Module (1794-IF2XOF2I) Read

Definition

limit as defined by the configuration selected. U0 (bit 00) corresponds to input channel 0

and U1 (bit 01) corresponds to input channel 1, etc. Refer to

Table 4.15.

current output channel is open. W0 (bit 02) corresponds to channel 0, and W1 (bit 03)

corresponds to channel 1.

limit as defined by the configuration selected. Bit 04 corresponds to input channel 0 and

bit 05 corresponds to input channel 1. Refer to

Table 4.15.

Not used. Set to 0.

Hold output bits (P). – These bits are set (1) in response to Q0 or Q1 and transition of

the EN bit. When P0 or P1 is set (1), they indicate that the output is holding at the level

in the readback data for the respective channel. These bits return to 0 when the output

data matches the readback output data.

Not used. Set to 0.

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Write Word 0 EN S1 S0 0 0 0 0 0 0 0 0 0 0 0 0 0 Word 1 Output Data Channel 0 Word 2 Output Data Channel 1 Word 3 0 0 0 0 0 0 0 0 Input Channel 1 Filter Input Channel 0 Filter Word 4 Output Channel 1

Configuration

Output Channel 0 Configuration

Input Channel 1 Configuration

Input Channel 0

Configuration Word 5 0 Real Time Sample Programed Interval Word 6 IC 1 TR IT Q1 Q2 0 0 RV QK CK GO Input Channel 0

Configuration Where:

EN = Enable outputs; 0 = output follows S1/S0, 1 = output enabled IC = Initiate configuration bit IT = Interrupt Toggle bit TR = Transparent bit Q0 and Q1 = Request for outputs to hold RV = Revert to defaults bit QK = Quick calibration CK = Calibration clock GO = Gain offset select

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74 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.19 Configuring Your Outputs for the 1794-IF2XOF2I Analog Combo Module

Configuration Bits

Nominal Range

Data Type

Output Values

(1)

Update Rate

MSD LSD Hexadecimal Decimal

0 0 0 1 4-20mA 2’s complement <0000–7878> <0000–30840> 5.0ms 0 0 1 0 ±10V 2’s complement <8618–79E8> <–31208–31208> 2.5ms 0 0 1 1 ±5V 2’s complement <8618–79E8> <–31208–31208> 2.5ms 0 1 0 0 0-20mA 2’s complement % 0–2710> 0–10000> 5.0ms 0 1 0 1 4-20mA 2’s complement % <0–2710> <0–10000> 5.0ms 0 1 1 0 0-10V 2’s complement % 0–2710> 0–10000> 5.0ms 0 1 1 1 ±10V 2’s complement % <–D8F0–2710> <–10000–10000> 5.0ms 1 0 0 0 0-20mA binary 0000–F3CF> 0000–62415> 2.5ms 1 0 0 1 4-20mA binary 0000–F0F1> 0000–61681> 5.0ms 1 0 1 0 0–10V binary 0000–F3CF> 0000–62415> 2.5ms 1 0 1 1 0-5V binary 0000–F3CF> 0000–62415> 2.5ms 1 1 0 0 ±20mA offset binary 8000–F9E8> 32768–63976> 2.5ms 1 1 0 1 4-20mA offset binary <8000–F878> <32768–63608> 5.0ms 1 1 1 0 ±10V offset binary <0618–F9E8> <1560–63976> 2.5ms 1 1 1 1 ±5V offset binary <0618–F9E8> <1560–63976> 2.5ms

(1)

< and > indicate the overrun beyond actual range (about 5%).

Table 4.20

Word/Bit Descriptions for the 1794-IF2XOF2I Analog Combo Module Write

Write Word Decimal Bit

(Octal Bit)

Word 0 Bits 00–14

(00–16) Bit 13–14 (15–16) Safe State Source bits (S1/S0). – When EN is 0, these bits designate the source of

Bit 15 (17) Output enable bit (EN). – When set (1), the outputs are enabled. This bit must be set

Word 1 Bits 00–15

(00–17)

Publication 1794-6.5.8 - January 2010

Definition

Not used

the safe state data. Bit 13 = 0, bit 14 = 1 – reset outputs to 0V/0mA (used with 1794-ASB/C) Bit 13 = 1, bit 14 = 1 – hold output at its current level (used with 1794-ASB/C) Bit 13 = 0; bit 14 = 0 – Safe state data is in output data words

in order for the real time data to appear at the outputs. If this bit is not set (0), the outputs will be determined by S1/S0.

Output Channel 0 data. Refer to Table 4.19.

Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter 75

Table 4.20

Word/Bit Descriptions for the 1794-IF2XOF2I Analog Combo

Module Write

Write Word Decimal Bit

Definition

(Octal Bit)

Word 2 Bits 00–15

Output Channel 1 data. Refer to Table 4.19.

(00–17)

Word 3 Input Channels 0 and 1 Filter Selections (refer to Table 4.16)

Bits 00–01 Channel 0 Filter Setting Bits 04–07 Channel 1 Filter Setting

Word 4 Channel configuration

Bits 00–03 Input Channel 0 Configuration – Refer to Table 4.15. Bits 04–07 Input Channel 1 Configuration – Refer to Table 4.15. Bits 08–11

Output Channel 0 Configuration – Refer to Table 4.19.

(10–13) Bits 12–15

Output Channel 1 Configuration – Refer to Table 4.19.

(14–17)

Word 5 Bits 00–14

(00–16)

Real Time Sample Interval – Programs the interval of the real time sample. Can be varied from 0 to 30 seconds (30000 decimal). Resolution is in ms with granularity in 5ms steps. (see

page 4-55)

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76 Writing Configuration to and Reading Status from Your Module with a Remote I/O Adapter

Table 4.20

Word/Bit Descriptions for the 1794-IF2XOF2I Analog Combo

Module Write

Write Word Decimal Bit

(Octal Bit)

Word 6 Bit 00–03 Channel calibration selection bit. When this bit is set (1), the channel can be

Bit 04 Gain/Offset selection bit (GO). – When this bit is cleared, a 0 to 1 to 0 transition of

Bit 05 Calibration clock bit (CK). – When this bit is set to 1 (calibration mode), the

Bit 06 Quick Calibration bit (QK). – Normally reset (0). When this bit is set (1) during a

Bit 07 Revert to defaults bit (RV). – Normally reset (0). When set (1) during a calibration

Bits 08–09 (10–11)

Bits 10–11 (12–13)

Bit 12 (14) Interrupt Toggle bit (IT) – This bit, when set (1), permits interleaving of module

Definition

calibrated using the calibration clock bit (CK). Bit 00 corresponds to input channel 0, bit 01 corresponds to input channel 1, it 02 corresponds to output channel 0, bit 03 corresponds to output channel 1.

the CK bit performs on offset calibration. When this bit is 1, the module is directed to do a gain calibration.

calibration sequence, the calibration coefficient is stored to all related configurations for the selected channels. NOTE: This method of calibration quickly calibrates the selected channels, however you will not be within the rated accuracy of the module.

procedure, default values for selected channels are used for the calibration coefficient. NOTE: You will not be within the rated accuracy of the module.

Not used. Set to 0.

Bit 13 (15) Transparent bit (TR). – This bit, when set to 1, permits configuration to be changed

Bit 15 (17) Initiate Configuration bit (IC). – When set (1), instructs the module to enter

Chapter Summary

Publication 1794-6.5.8 - January 2010

without using the IC bit.

In this chapter, you read how to configure your module’s features and enter your data.

Chapter

Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Chapter Objectives

About RSNetWorx and RSLogix

Polled I/O Structure

In this chapter, you will read about:

• RSNetWorx and RSLogix software

• I/O structure

• image table mapping

• factory defaults

RSNetWorx is a software tool used in conjunction with RSLogix to configure your FLEX I/O DeviceNet or ControlNetadapter and its related modules. This software tool can be connected to the adapter via the DeviceNet network. The Ethernet IP adapter only requires RSLogix to configure the modules.

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.

DeviceNet Adapter

Read Data

Adapter

Status

Slot 0 Input Data

Network

READ

Network WRITE

77 Publication 1794-6.5.8 - January 2010

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

78 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

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

15Bit: 01234567810 through 15

I/O Module Fault Bits

Not Used

I/O State Bit

Node Address Changed Bit

Slot 7

Slot 6

Slot 5

Slot 4

Slot 3

Slot 2

Slot 1

Slot 0

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

Bit Description Bit Explanation

I/O Module Faults 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.

Node Address Changed 8 This bit is set (1) when the node address switch setting has been

changed sing power up.

I/O State 9 Bit = 0 – idle

Bit = 1 – run

10 thru 15 Not used – sent as zeroes.

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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 affect until the adapter has been powered down and then powered back up.

Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 79

Mapping Data into the Image Table

Module Description Catalog

4 Input Isolated Analog Module 1794-IF4I page 5-79 4 Output Isolated Analog Module 1794-OF4I page 5-86 2 in/2 out Isolated Analog Combo Module 1794-IF2XOF2I page 5-91

FLEX I/O analog modules are supported by the DeviceNet adapter.

For image table mapping refer to:

Number:

4 Input Isolated Analog Module (Cat. No. 1794-IF4I) Image Table Mapping

Module

Image

I/O Image

Input Size

1 to 7Words

Output Size

0 to 8 Word

PU FP CF BD DN

TR IT

Input Data Channel 0 Input Data Channel 1 Input Data Channel 2 Input Data Channel 3

Real Time Sample

Set to 0EN

Channel Filters

Channel Configuration

Real Time Sample Programmed Interval

RV QK CK GO

Not used

UnderrangeOverrange

Channel #

Table 5.1 Analog Input Module (1794-IF4I, 1794-IF4ICFXT) Read

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Read Word 1 Analog Value Channel 0 Word 2 Analog Value Channel 1 Word 3 Analog Value Channel 2 Word 4 Analog Value Channel 3 Word 5 Real Time Sample Word 6 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0 Word 7 0 0 0 0 0 0 0 0 V3 V2 V1 V0 U3 U2 U1 U0

Where: PU = Power up unconfigured state FP = Field power off CF = In configuration mode

BD = Calibration bad DN = Calibration accepted U = Under range for specified channel V = Overrange for specified channel

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80 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Table 5.2 Analog Input Module (1794-IF4ICFXT) Write

Dec. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Oct. 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0

Word 0 EN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Word 1 Channel 3 Filter Channel 2 Filter Channel 1 Filter Channel 0 Filter Word 2 Ch 3 Configuration Ch 2 Configuration Ch 1 Configuration Ch 0 Configuration Word 3 0 Real Time Sample Interval Word 4 IC 1 TR IT 0 CH SK FS RV QK CK GO Channel Number Word 5 Reserved Where :

EN = Enable bit (not used on input module) IC = Initiate Configuration bit TR = Transparent bit IT = Interrupt toggle bit CH - Chop Mode Disable — use to disable the chop mode. Chop mode used by the module to reduce offset and drift errors. The default is chop mode enabled (0). SK = FIR Filter Disable — use to disable the FIR filter. The Finite Impulse Response filter is used by the module to improve signal stability. The default is FIR filter enabled (0). FS = Fast Step Response — use to enable a fast step response algorithm. The fast step response algorithm, upon sensing a step input, uses an averaging method rather than the FIR filter. The FIR goes back into operation once the input has settled. The default is fast step response disabled (0). RV = Revert to default bit QK = Quick calibration CK = Calibration clock GO = Gain Offset select

Table 5.3 Analog Input Module (1794-IF4I) Write Configuration Block

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Word 1 EN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Word 2 Chnl 3 Filter Chnl 2 Filter Chnl 1 Filter Chnl 0 Filter Word 3 Chnl 3 Configuration Chnl 2 Configuration Chnl 1 Configuration Chnl 0 Configuration Word 4 0 Real Time Sample Programmed Interval Word 5 IC 1 TR IT 0 0 0 0 RV QK CK GO Channel Number Word 6 Not used Word 7 Not used Word 7 Not used

Where: EN = Not used on the 1794-IF4I. IC = Initiate configuration bit TR = Transparent bit IT = Interrupt Toggle bit RV = Revert to defaults bit QK = Quick calibration CK = Calibration clock GO = Gain offset select

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Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 81

Table 5.4 Setting the Input Filter

Bits Channel

03 02 01 00 Input 0 07 06 05 04 Input 1 11 10 09 08 Input 2 15 14 13 12 Input 3

A/D Conversion

Low Pass Filter

Rate

0 0 0 0 1200Hz No low pass 0 0 0 1 1200Hz 100ms low pass 0 0 1 0 1200Hz 500ms low pass 0 0 1 1 1200Hz 1000ms low pass 0 1 0 0 600Hz No low pass 0 1 0 1 600Hz 100ms low pass

Input Channel Configuration

03 02 01 00 Set these bits for Channel 0 07 06 05 04 Set these bits for Channel 1 11 10 09 08 Set these bits for Channel 2 15 14 13 12 Set these bits for Channel 3 Bit Settings Input

Values

0 0 0 0 Channel not configured

Data Format % Underrange

Table 5.5 Configuring Your Input Module

%Overrange

Input Range Hexadecimal Decimal (RTSI = 0) (RTSI = 0)

(2)

Module Update Rate

IT = 1

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82 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Table 5.5 Configuring Your Input Module

0 0 0 1 4–20mA signed 2’s complement 4% Under; 4% Over <0000–7878> <0000–30840> 7.5ms 5.0ms 0 0 1 0 ±10V signed 2’s complement 2% Under, 2% Over <831F–7CE1> <–31969–31969> 2.5ms 2.5ms 0 0 1 1 ±5V signed 2’s complement 4% Under, 4% Over <8618–79E8> <–31208–31208> 2.5ms 2.5ms 0 1 0 0 0–20mA signed 2’s complement % 0% Under, 4% Over 0–2710> 0–10000> 7.5ms 5.0ms 0 1 0 1 4-20mA signed 2’s complement % 4% Under, 4% Over <0–2710> <0–10000> 7.5ms 5.0ms 0 1 1 0 0–10V signed 2’s complement % 0% Under, 2% Over 0–2710> 0–10000> 5.0ms 5.0ms 0 1 1 1 ±10V signed 2’s complement % 2% Under, 2% Over <–D8F0–2710> <–10000–10000> 5.0ms 5.0ms 1 0 0 0 0–20mA binary 0% Under, 4% Over 0000–F3CF> 0000–62415> 2.5ms 2.5ms 1 0 0 1 4–

20mA 1 0 1 0 0–10V binary 0% Under, 2% Over 0000–F9C2> 0000–63938> 2.5ms 2.5ms 1 0 1 1 0–5V binary 0% Under, 4% Over 0000–F3CF> 0000–62415> 2.5ms 2.5ms 1 1 0 0 ±20mA offset binary, 8000H = 0mA 4% Under, 4% Over <0618–F9E8> <1560–63976> 2.5ms 2.5ms 1 1 0 1 4–20mA offset binary, 8000H = 4mA 4% Under, 4% Over <8000–F878> <32768–63608> 7.5ms 5.0ms 1 1 1 0 ±10V offset binary, 8000H = 0V 2% Under, 2% Over <031F–FCE1> <799–64737> 2.5ms 2.5ms 1 1 1 1 ±5V offset binary, 8000H = 0V 4% Under, 4% Over <0618–F9E8> <1560–63976> 2.5ms 2.5ms

(1)

Underrange for 4-20mA occurs in the blind area below 0 (3.2mA).

(2)

< and > indicate the overrun beyond actual range (about 5%).

binary 4% Under, 4% Over 0000–F0F1> 0000–61681> 7.5ms 5.0ms

(1)

Word Decimal Bit

(Octal Bit)

Word 1 Bits 00-15

(00-17)

Word 2 Bits 00-15

(00-17)

Word 3 Bits 00-15

(00-17)

Word 4 Bits 00-15

(00-17)

Word 5 Bits 00-15

(00-17)

Table 5.6 Word/Bit Descriptions for the 1794-IF4I Isolated Analog Input Module

Definition

Channel 0 analog data – Real time input data per your configuration

Channel 1 analog data – Real time input data per your configuration

Channel 2 analog data – Real time input data per your configuration

Channel 3 analog data – Real time input data per your configuration

Real Time Sample. The elapsed time in increments programmed by the real

time sample interval.

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Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 83

Table 5.6 Word/Bit Descriptions for the 1794-IF4I Isolated Analog Input Module

Word Decimal Bit

Definition

(Octal Bit)

Word 6 Bit 00 Reserved

Bit 01 Calibration Done bit (DN). – This bit is set to 1 after a calibration cycle is

completed.

Bit 02 Calibration Bad bit (BD). – This bit is set to 1 if the channel calibration

coefficients cannot be saved or be read properly. Bits 03-07 Set to 0. Bits 08-11

Reserved (10-12)

Bit 12 (14) Set to 0. Bit 13 (15) Configuration mode bit (CF) – This bit is set (1) when the calibration mode

is selected (bit 15, word 5 in the block transfer write set to 1). When this bit is

set (1), the module status indicator flashes. Bit 14 (16) Field Power Off bit (FP) – This bit is set (1) when the 24V field power fails.

When this bit is set (1), the module status indicator flashes. Bit 15 (17) Power Up (unconfigured state) bit (PU). – This bit is set (1) when the

configuration word is all zeroes (0) due to a reset (adapter power cycle or

module insertion) or a cleared configuration word (all 0). When this bit is set

(1), the module status indicator flashes.

Word 7 Bits 00-03 Underrange bits (U). – These bits are set (1) when the input channel is

below a preset limit as defined by the configuration selected. U0 (bit 00)

corresponds to input channel 0 and U1 (bit 01) corresponds to input channel 1,

etc. Refer to

Table 5.5.

Bits 04-07 Overrange bits (V). – These bits are set (1) when the input channel is above

a preset limit as defined by the configuration selected. Bit 04 corresponds to

input channel 0 and bit 05 corresponds to input channel 1, etc. Refer to

Table 5.5. Bits 08-15

Not used. Set to 0. (10-17)

Write Word 1 Bits 00-14

Not used. Set to 0. (00-16)

Bit 15 (17) Output enable bit (EN). – Not used in the 1794-IF4I module.

Word 2 Channels 0 through 3 Filter Selections (refer to Table 5.4)

Bits 00-03 Channel 0 Filter Setting Bits 04-07 Channel 1 Filter Setting Bits 08-11

Channel 2 Filter Setting (10-13)

Bits 12-15

Channel 3 Filter Setting (14-17)

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84 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Table 5.6 Word/Bit Descriptions for the 1794-IF4I Isolated Analog Input Module

Word Decimal Bit

Definition (Octal Bit)

Word 3 Channels 0 through 3 Filter Selections (refer to Table 5.5)

Bits 00-03 Channel 0 Configuration Bits 04-07 Channel 1 Configuration Bits 08-11

Channel 2 Configuration (10-13)

Bits 12-15

Channel 3 Configuration (14-17)

Word 4 Bits 00-14

(00-16)

Real Time Sample Interval – Programs the interval of the real time sample.

Can be varied from 0 to 30 seconds (30000 decimal). Resolution is in ms with

granularity in 5ms steps. Bit 15 (17) Not used. Set to 0.

Word 5 Bit 00-03 Channel calibration selection bit. When this bit is set (1), the channel can

be calibrated using the calibration clock bit (CK). Bit 00 corresponds to input

channel 0, bit 01 corresponds to input channel 1, it 02 corresponds to input

channel 2, bit 03 corresponds to input channel 3 Bit 04 Gain/Offset selection bit (GO). – When this bit is cleared, a 0 to 1 to 0

transition of the CK bit performs on offset calibration. When this bit is 1, the

module is directed to do a gain calibration. Bit 05 Calibration clock bit (CK). – When this bit is set to 1 (calibration mode), the

calibration coeffiicient for the selected channels is accepted. When this bit is

reset (0), the accepted calibration coefficients for the selected channels are

stored, applied, and the calibration mode exited. Monitor status bits DN and

BD for succesful calibration. Bit 06 Quick Calibration bit (QK). – Normally reset (0). When this bit is set (1)

during a calibration sequence, the calibration coefficient is stored to all

related configurations for the selected channels. NOTE: This method of

calibration quickly calibrates the selected channels, however you will not be

within the rated accuracy of the module. Bit 07 Revert to defaults bit (RV). – Normally reset (0). When set (1) during a

calibration procedure, default values for selected channels are used for the

calibration coefficient.NOTE: You will not be within the rated accuracy of the

module. Bits 08-11

(10-14)

Not used. Set to 0.

For IF4ICFXT only:

Bit 8 — FastStepResponse (FR) forces the A/D to skip the FIR stage if an

input step occurs. An averaging algorithm is temporarily used instead of the

FIR filter in the A/D to provide a quicker response.

Bit 9 — FIRFilterDisable (SK) bypasses the FIR filter stage in the A/D.

Bit 10 — ChopModeDisable (CH) disables the chop mode in the A/D. Chop

mode is used to reduce offsets between input and output of the analog

section of the A/D.

(1)

Note: Module level settings that only affect 150 Hz, 300 Hz, and 600 Hz

conversion rate settings.

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Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 85

Table 5.6 Word/Bit Descriptions for the 1794-IF4I Isolated Analog Input Module

Word Decimal Bit

Definition (Octal Bit)

Word 5 Bit 12 (14) Interrupt Toggle bit (IT) – This bit, when set (1), permits interleaving of

module interrupts ensuring exchange of critical data when channels are

configured for their fastest update times. RTSI and “no low pass filter” must

be 0 in order for the module to recognize this feature. This groups data update

rates for all channels to the slowest configuration setting of any of the

channels. In addition, channel update rates for all channels with a 7.5ms

update rate are reduced to 5.0ms. When reset (0), real time sampling and

filter features are enabled. Bit 13 (15) Transparent bit (TR). – This bit, when set to 1, permits configuration to be

changed without using the IC bit. Bit 14 (16) Set to 1. Bit 15 (17) Initiate Configuration bit (IC). – When set (1), instructs the module to enter

configuration mode. Present configuration data prior to or coincident with IC

being set. Once IC returns to 0, the configuration is applied and any subquent

configuration information is ignored until IC is toggled.

Words 6, 7 and 8 Bits 00-15

Not used. (00-17)

(1)

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86 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

4 Output Isolated Analog Module (Cat. No. 1794-OF4I) Image Table Mapping

Module

Image

I/O Image

Input Size

0 to 6 Words

Output Size

1 to 9 Words

Read Back Channel 0 Read Back Channel 1 Read Back Channel 2 Read Back Channel 3

PU FP CF BD DN

Hold Outputs

S1 S0

IC RV QK CK GO

1 Q3 Q2 Q1 Q0

TR IT

Set to 0EN

Output Data Channel 0 Output Data Channel 1

Output Data Channel 2 Output Data Channel 3

Channel Configuration

Not Used

Wire-off

Channel #

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Read Word 1 Read Back Channel 0

Word 2 Read Back Channel 1 Word 3 Read Back Channel 2 Word 4 Read Back Channel 3 Word 5 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0 Word 6 0 0 0 0 P3 P2 P1 P0 0 0 0 0 W3 W2 W1 W0

Where:

PU = Power up unconfigured state

FP = Field power off CF = In configuration mode BD = Calibration bad DN = Calibration accepted P0 thru P3 = Output holding in response to Q0 thru Q3 W0 thru W3 = Wire off current loop status for channels 0 thru 3 respectively. (Not used on voltage outputs.)

Publication 1794-6.5.8 - January 2010

Table 5.7 Analog Output Module (1794-OF4I) Read

Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 87

Table 5.8 Analog Output Module (1794-OF4I) Write Configuration Block

Word/Dec. Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Word/Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Write Word 1 EN S1 S0 0 0 0 0 0 0 0 0 0 0 0 0 0 Word 2 Output Data – Channel 0 Word 3 Output Data – Channel 1 Word 4 Output Data – Channel 2 Word 5 Output Data – Channel 3 Word 6 Output Chnl 3

Configuration

Output Chnl 2 Configuration

Output Chnl 1 Configuration

Output Chnl 0

Configuration Word 7 IC 1 TR IT Q3 Q2 Q1 Q0 RV QK CK GO Channel Number Words 8 and 9 Not used

Where: EN = Enable outputs; 0 = output follows S1/S0, 1 = output enabled IC = Initiate configuration bit TR = Transparent bit IT = Interrupt Toggle bit Q0–3 = Request for outputs to hold RV = Revert to defaults bit QK = Quick calibration CK = Calibration clock GO = Gain offset select

Table 5.9 Configuring Your Outputs for the 1794-OF4I Isolated Output Module

Configuration Bits Nominal MSD LSD Hexadecimal Decimal

Range

Data Type Output Values Update

Rate

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88 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Table 5.9 Configuring Your Outputs for the 1794-OF4I Isolated Output Module

1 1 1 0 ±10V offset binary <0618–F9E8> <1560–63976> 2.5ms 1 1 1 1 ±5V offset binary <0618–F9E8> <1560–63976> 2.5ms

Table 5.10 Word/Bit Descriptions for the 1794-OF4I Isolated Analog Output Module

Word Decimal Bit

Definition

(Octal Bit)

Word 1 Bits 00-15

(00-17)

Read Back Channel 0 – During normal operation, it is a copy of the output of channel 0. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 2 Bits 00-15

(00-17)

Read Back Channel 1 – During normal operation, it is a copy of the output of channel 1. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 3 Bits 00-15

(00-17)

Read Back Channel 2 – During normal operation, it is a copy of the output of channel 2. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 4 Bits 00-15

(00-17)

Read Back Channel 3 – During normal operation, it is a copy of the output of channel 3. During an EN transition, it is the condition of the output as determined by S1 and S0. Read back is an image of what the user has sent as output to the module; no checks are performed on the data.

Word 5 Bit 00 Reserved

Bit 01 Calibration Done bit (DN). – This bit is set to 1 after a calibration cycle is

completed.

Bit 02 Calibration Bad bit (BD). – This bit is set to 1 if the channel calibration

coefficients cannot be saved or be read properly. Bits 03-07 Set to 0. Bits 08-11

Reserved (10-12)

Bit 12 (14) Set to 0. Bit 13 (15) Configuration mode bit (CF) – This bit is set (1) when the calibration mode

is selected (bit 15, word 5 in the block transfer write set to 1). When this bit is

set (1), the module status indicator flashes. Bit 14 (16) Field Power Off bit (FP) – This bit is set (1) when the 24V field power fails.

When this bit is set (1), the module status indicator flashes. Bit 15 (17) Power Up (unconfigured state) bit (PU). – This bit is set (1) when the

configuration word is all zeroes (0) due to a reset (adapter power cycle or

module insertion) or a cleared configuration word (all 0). When this bit is set

(1), the module status indicator flashes.

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Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter 89

Table 5.10 Word/Bit Descriptions for the 1794-OF4I Isolated Analog Output Module

Word Decimal Bit

Definition (Octal Bit)

Word 6 Bits 00-03 Wire-Off status bits. (W). – These bits, when set (1), indicate the

corresponding current output channel is open. W0 corresponds to channel 0,

W1 corresponds to channel 2, etc. Bits 04-07 Set to 0. Bits 10-11

(12-13)

Hold output bits (P). – These bits are set (1) in response to Q0 or Q1 and a

transition of the EN bit. When P0 or P1 is set (1), they indicate that the output

is holding at the level in the readback data for the respective channel. These

bits return to 0 when the output data matches the readback output data. Bits 12-15

Set to 0. (14-17)

Write Word 1 Bits 00-12

Not used. (00-14)

Bits 13-14 (15-16)

Safe State Source bits (S1/S0). – When EN is 0, these bits designate the

source of the safe state data. Bit 13 = 0, bit 14 = 1 – reset outputs to 0V/0mA

(used with 1794-ASB/C) Bit 13 = 1, bit 14 = 1 – hold output at its current level

(used with 1794-ASB/C Bit 13 = 0; bit 14 = 0 – Safe state data is in output

data words Bit 15 (17) Output enable bit (EN). – When set (1), the outputs are enabled. This bit

must be set in order for the real time data to appear at the outputs. If this bit

is not set (0), the outputs will be determined by S1/S0.

Word 2 Bits 00-15

(00-17)

Channel 0 output data. – The output data is real time data formatted to the

selected configuration. (This data is also safe state data when directed by S!

and S0.)

Word 3 Bits 00-15

(00-17)

Channel 1 output data. – The output data is real time data formatted to the

selected configuration. (This data is also safe state data when directed by S!

and S0.)

Word 4 Bits 00-15

(00-17)

Channel 2 output data. – The output data is real time data formatted to the

selected configuration. (This data is also safe state data when directed by S!

and S0.)

Word 5 Bits 00-15

(00-17)

Channel 3 output data. – The output data is real time data formatted to the

selected configuration. (This data is also safe state data when directed by S!

and S0.)

Word 6 Channel Configuration (refer to Table 5.9)

Bits 00-03 Channel 0 Configuration Bits 04-07 Channel 1 Configuration Bits 08-11

Channel 2 Configuration (10-13)

Bits 12-15

Channel 3 Configuration (14-17)

Publication 1794-6.5.8 - January 2010

90 Communication and I/O Image Table Mapping with the DeviceNet/ControlNet Adapter

Table 5.10 Word/Bit Descriptions for the 1794-OF4I Isolated Analog Output Module

Word Decimal Bit

Definition (Octal Bit)

Word 7 Bit 00-03 Channel calibration selection bit. When this bit is set (1), the channel can