What This Chapter Contains; About The Controlnet Adapter; Communication Over The Flex I/O Backplane - Rockwell Automation Allen-Bradley FLEX Integra User Manual

What this Chapter Contains

About the ControlNet Adapter

Communication Over the
FLEX I/O Backplane
ControlNet
Network
Adapter
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Input, Status, Output and Configuration Files
using ControlNet
Read this chapter to familiarize yourself with input, output and
configuration files for analog I/O modules on ControlNet.This chapter talks
about:
• the ControlNet Adapter
• I/O structure
• fault state data
• communication fault data
• idle state behavior
• input data behavior upon module removal
The FLEX I/O ControlNet adapter (cat. no. 1794-ACN15 or -ACNR15)
interfaces up to 8 FLEX I/O and/or FLEX Integra modules and a
ControlNet processor or scanner. The adapter can support ControlNet
real-time data connections to individual modules or module groups. Each
connection is independent of the others and can be from different processors
or scanners.
One ControlNet adapter can interface up to eight terminal base units with
installed FLEX I/O and/or FLEX Integra modules, forming a
FLEX I/O system of up to eight slots. The adapter communicates to other
network system components (typically one or more controllers or scanners,
and/or programming terminals) over the ControlNet network. The adapter
communicates with its I/O modules over the flexbus backplane.
I/O Module
0
Inputs
Read
Status
Outputs
Write
Configuration
X
Slot 0
I/O Module
Inputs
Read
Words
Status
Outputs
Write
Words
Configuration
Slot 1
Publication 1793-6.5.1 - April 1999
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Chapter
I/O Module
Inputs
Status
Outputs
Configuration
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Slot 7