Allen-Bradley 1794-OF4I - User Manual

FLEX I/O Isolated
Analog Modules
1794-IF4I, -OF4I, IF2XOF2I, -IF4IXT,
-IF4ICFXT, -OF4IXT, IF2XOF2IXT
User Manual

Allen-Bradley 1794-OF4I Specifications

General

Manufacturer	Allen-Bradley
Module Type	Analog Output
Number of Outputs	4
Output Type	Current/Voltage
Resolution	16-bit
Backplane Current	100 mA
Current Output Range	0…20 mA
Voltage Output Range	0-10V
Isolation Voltage	50V
Temperature Range	-20 to 60 °C
Relative Humidity	5…95% noncondensing
Compatibility	1794 Flex I/O system
Product Type	Flex I/O Analog Output Module

Summary

Chapter 1 Overview of FLEX I;O and your Analog Modules

The FLEX I;O System

Types of FLEX I;O Modules

How FLEX I;O Analog Modules Communicate with Programmable Controllers

Explains the communication process.

Chapter 2 How to Install Your Analog Module

Mounting the Terminal Base Unit on a DIN Rail

Panel;Wall Mounting

Connecting Wiring for the Analog Modules

Covers wiring procedures for analog modules.

Chapter 3 Module Programming

Block Transfer Programming

Explains block transfer instructions for module communication.

Configuration Rungs

Details ladder logic rungs for module configuration.

Sample Programs for FLEX I;O Analog Modules

Provides example programs for PLC-3 and PLC-5.

Chapter 4 Writing Configuration to and Reading Status from Your Module with a Remote I;O Adapter

Configuring Your Analog Module

Explains how to set module features and parameters.

Range Selection

Describes how to select input/output ranges for modules.

Real Time Sampling

Mapping Data for the Analog Modules

Explains how data is mapped in the I/O image table.

Chapter 5 Communication and I;O Image Table Mapping with the DeviceNet;ControlNet Adapter

Polled I;O Structure

Mapping Data into the Image Table

Chapter 6 Input, Output, Status and Configuration Files for Analog Modules when used with ControlNet

Adapter Input Status Word

Safe State Data

Communication Fault Behavior

Chapter 7 Calibrating Your Module

When and How to Calibrate Your Isolated Analog Module

Explains calibration necessity and methods.

Bits Used During Calibration

Offset Calibration for Inputs

Scaling Inputs

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