Allen-Bradley FLEX I/O 1794-IP4, User Manual, Page: 8 / 70

Table of Contents ii
Publication 1794-6.5.16 – September 1998
Chapter 4
What This Chapter Contains 4–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Your Pulse Counter Module 4–1 . . . . . . . . . . . . . . . . . . . . .
Reading Data From Your Module 4–2 . . . . . . . . . . . . . . . . . . . . . . . . .
Mapping Data for the Module 4–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Counter Module (1794-IP4) Image Table Mapping 4–2 . . . . . . .
Block Transfer Read Word Assignments for the Pulse Counter Module
(1794-IP4) 4–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bit/Word Definitions for Block Transfer Read Words for the
Pulse Counter Module 4–3 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Transfer Write Word Assignments for the Pulse
Counter Module 4–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bit/Word Definitions for the Block Transfer Write Words for the Pulse
Counter Module 4–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Summary 4–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5
What This Chapter Contains 5–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About DeviceNetManager Software 5–1 . . . . . . . . . . . . . . . . . . . . . . . .
Polled I/O Structure 5–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapter Input Status Word 5–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Throughput 5–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mapping Data into the Image Table 5–3 . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Counter Module (1794-IP4) Image Table Mapping 5–3 . . . . . . .
Block Transfer Read Word Assignments for the Pulse Counter
Module (1794-IP4) 5–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Block Transfer Write Word Assignments for the Pulse
Counter Module 5–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bit/Word Definitions for the Pulse Counter Module 5–4 . . . . . . . . .
Defaults 5–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 6
Chapter Objectives 6–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About the ControlNet Adapter 6–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Communication Over the FLEX I/O Backplane 6–1 . . . . . . . . . . . . . . . .
Scheduled Data-Transfer 6–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unscheduled Data-Transfer 6–2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module I/O Mapping 6–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Structure 6–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapter Input Status Word 6–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safe State Data 6–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Actions 6–4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Communication Fault Behavior 6–5 . . . . . . . . . . . . . . . . . . . . . . . . .
Idle State Behavior 6–5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Data Behavior upon Module Removal 6–5 . . . . . . . . . . . . . . . .
Writing Configuration to and
Reading Status from Your
Module with a Remote I/O
Adapter
How Communication Takes
Place and I/O Image Table
Mapping with the DeviceNet
Adapter
Input, Output and
Configuration Files for
Analog Modules when used
with ControlNet