Allen-Bradley ControlLogix User Manual

1756-6.5.3 - December 1999
Chapter 10
Controlling I/O Over a ControlNet Network
About the Example Application
This example application uses scheduled communications to read data from
a remote digital input module and send data to a remote digital output
module. The example simulates a parts counter operation.
The local ControlLogix chassis contains the Logix5550 controller in slot 0
and the “parent” 1756-CNB module (configured as node 1) in slot 1. The
remote chassis contains a “child” 1756-CNB module (configured as node 6)
in slot 1 and the I/O modules in slots 2 and 3. Network scheduling is done
using RSNetworx for ControlNet software.
The basic procedure given in this example can also be used to configure and
schedule FLEX I/O on a ControlNet network.
What you will do See page
Set Up the Example Application 10-2
Create the Example Application 10-2
Add the Local CNB Module to the I/O Configuration 10-3
Add the Remote CNB Module to the I/O Configuration 10-4
Add the Remote I/O Modules to the I/O Configuration 10-7
Edit the Controller Tags 10-11
Create the Ladder Logic Program 10-12
Download the Program 10-12
Schedule the Network Using RSNetWorx for ControlNet 10-13
Test the Example Application 10-18

Allen-Bradley ControlLogix Specifications

General

Communication	EtherNet/IP, ControlNet, DeviceNet, DH+
I/O Capacity	Up to 128, 000 I/O points (varies by configuration)
Redundancy	Supported (with specific modules)
Programming Software	Rockwell Automation Studio 5000 Logix Designer
Operating Temperature	0°C to 60°C (32°F to 140°F)
Programming Languages	Ladder Logic, Function Block Diagram, Structured Text, Sequential Function Chart
Modularity	Yes
Certifications	UL, CE
Processor Type	Multiple options available, including standard, safety, and extreme environment processors
Power Supply	Multiple options available, including standard and redundant power supplies with various voltage ranges (e.g., 24V DC, 120/240V AC)