Allen-Bradley ControlNet PLC-5

ii Table of Contents – ControlNet PLC-5 Programmable Controllers
1785-UM022B-EN-P - February 2002
Understanding Multicast Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Understanding Multicast Outputs . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Using Multicast Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Understanding ControlNet I/O Mapping . . . . . . . . . . . . . . . . . . . . . . 2-16
Reserving Space for Non-ControlNet I/O. . . . . . . . . . . . . . . . . . . . 2-16
Processor-Resident Local I/O . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Remote I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Supported ControlNet I/O Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Discrete I/O Data Transfer Mapping . . . . . . . . . . . . . . . . . . . . . 2-19
Non-Discrete I/O Data Transfer Mapping . . . . . . . . . . . . . . . . . 2-19
1771 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
1747 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
1794 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Other ControlNet Processors . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Using I/O Mapping Techniques. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Understanding Discrete Mapping . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Optimizing the I/O Image Table . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Optimizing the I/O Image Table without Slot Complementary . . 2-23
Optimizing the I/O Image Table with Slot Complementary. . . . . 2-27
Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Using the ControlNet PLC-5 Processor in a ControlNet I/O System . . 2-31
Distributed Keeper Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Converting from a Non-ControlNet Remote I/O System
to a ControlNet I/O System . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Converting from ControlNet Phase 1.0 or 1.25
to ControlNet Phase 1.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Understanding the ControlNet
System Software
Chapter 3
Configuring and Programming Your ControlNet System . . . . . . . . . . . 3-1
Using ControlNet Message Instructions . . . . . . . . . . . . . . . . . . . . . . . 3-1
I/O Configuration Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Uploading and Downloading Software Projects. . . . . . . . . . . . . . . . 3-3
Using RSNetWorx to Perform Verification Activities. . . . . . . . . . . . . 3-4
For More Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5