Allen-Bradley 1756-IA8D User Manual

ControlLogix Digital I/O Modules
Catalog Numbers 1756-IA8D, 1756-IA16, 1756-IA16I, 1756-IA32, 1756-IB16, 1756-IB16D, 1756-IB16I, 1756-IB16IF, 1756-IB32,
1756-IC16, 1756-IG16, 1756-IH16I, 1756-IM16I, 1756-IN16, 1756-IV16, 1756-IV32, 1756-OA8, 1756-OA8D, 1756-OA8E,
1756-OA16, 1756-OA16I, 1756-OB8, 1756-OB8EI, 1756-OB8I, 1756-OB16D, 1756-OB16E, 1756-OB16I, 1756-OB16IEF,
1756-OB16IEFS, 1756-OB16IS, 1756-OB32, 1756-OC8, 1756-OG16, 1756-OH8I, 1756-ON8, 1756-OV16E, 1756-OV32E,
1756-OW16I, 1756-OX81
User Manual

Allen-Bradley 1756-IA8D Specifications

General

Number of Inputs	8
Connection Type	Removable Terminal Block
Product Type	Input Module
Module Location	In ControlLogix chassis
Input Type	Sinking
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40 to 85 °C
Relative Humidity	5% to 95% (non-condensing)
Compatibility	ControlLogix

Summary

Chapter 1 What Are ControlLogix Digital I/O Modules?

Chapter 2 Digital I/O Operation in the ControlLogix System

Internal Module Operation

Input Module Operation

Chapter 3 Common Module Features

Common Features

Fault and Status Reporting between Input Modules and Controllers

Explains how input modules multicast fault and status data to controllers.

Chapter 4 Diagnostic Module Features

Diagnostic Features

Lists common diagnostic features for digital I/O modules, like diagnostic latching and timestamping.

Features Specific to Diagnostic Input Modules

Chapter 5 Fast Module Features

Fast Features

Features Specific to Fast Input Modules

Chapter 6 Install ControlLogix I/O Modules

Install the Module

Provides instructions for installing or removing modules using RIUP, with safety precautions.

Connect the Wires

Guides on connecting wires to RTBs or using prewired interface modules.

Install the Removable Terminal Block

Details the process of installing the RTB onto the module to connect wiring.

Chapter 7 Configure ControlLogix Digital I/O Modules

Create a New Module

Step-by-step guide to adding a new local or remote I/O module in RSLogix 5000 software.

Connection Properties

Defines controller-to-module behavior, including RPI, inhibiting, and fault configuration.

Chapter 8 Wiring Diagrams

1756-IA8D

1756-IA16

1756-IA16I

Appendix A Troubleshoot Your Module

Status Indicators for Input Modules

Use RSLogix 5000 Software for Troubleshooting

Explains how RSLogix 5000 software alerts users to fault conditions.

Appendix B Tag Definitions

Standard and Diagnostic Input Module Tags

Standard and Diagnostic Output Module Tags

Appendix C Use Ladder Logic To Perform Run Time Services and Reconfiguration

Using Message Instructions

Explains how to use Message instructions for run-time services and configuration changes.

Create a New Tag

Appendix D Choose a Correct Power Supply