Allen-Bradley ControlLogix User Manual

1756-6.5.3 - December 1999
Chapter 5
Logix5550 Controller to PLC-5C:
Unscheduled Messaging
About the Example Application
This example application sends an unscheduled message from a Logix5550
processor to a PLC-5C processor. The Logix5550 processor is in slot 0 of
the ControlLogix chassis and the1756-CNB module (configured as node 1)
is in slot 1. The PLC-5C is configured as ControlNet node 11. A Counter
that increments continuously provides the test data for the message.
Set Up the Example Application
Change your system configuration to that shown below:
• Verify that the Logix5550 processor and the 1756-CNB module are in
slots 0 and 1 as shown.
• Verify that the node address for the 1756-CNB module is 1 and the node
address for the PLC-5C processor is 11 as shown.
What you will do See page
Set Up the Example Application 5-1
Create the Example Application 5-2
Create the Controller Tags for the Write Message Program 5-3
Create the Write Message Ladder Program 5-4
Download the Write Message Program 5-6
Test the Example Application 5-7
ControlNet Network
Logix5550
1756-CNB
(Node 1)
PLC-5C
ControlLogix
Chassis
1771 I/O
Chassis
PC with
1784-KTCX15
Interface
Message
Slot 0 1
(Node 11)
Processor

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)