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6 - devicenet i/o image, Introduction, 1769-sdn input structure – Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual User Manual

Page 87: Chapter 6, Devicenet i/o image, Introduction 1769-sdn input structure, Chapter

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87

Publication 1769-UM009E-EN-P - August 2009

87

Chapter

6

DeviceNet I/O Image

Introduction

This chapter describes the input and output data structure. This table describes
what this chapter contains and where to find specific information.

1769-SDN Input Structure

The 1769-SDN scanner module’s input image is configurable up to 246 words.
The input image is broken into two primary components, the status area and
the input data area.

Topic

Page

1769-SDN Input Structure

87

MicroLogix 1500 Status Structure

88

Module Status Register

93

CompactLogix Status Structure

94

CompactLogix Status Register

98

CompactLogix Command Register

100

Input Data Image

102

1769-SDN Output Structure

102

Input Image

Name

Size

Word Offset

Status Structure

66-words (fixed)

0…65

Input Data Image

180-word array (configurable)

66…245