Allen-Bradley 1756-L61 User Manual

Rockwell Automation Publication 1756-UM001M-EN-P - February 2012 123
Chapter 7
Manage Controller Communication
(connections)
Connection Overview
A Logix5000 system uses a connection to establish a communication link
between two devices. The types of connections include the following:
• Controller-to-local I/O modules or local communication modules
• Controller-to-remote I/O or remote communication modules
• Controller-to-remote I/O (rack-optimized) modules
• Produced and consumed tags
• Messages
• Controller access by RSLogix 5000 software
• Controller access by RSLinx Classic or RSLinx Enterprise software for
HMI or other applications
Produce and Consume
(interlock) Data
ControlLogix controllers let you produce (broadcast) and consume (receive)
system-shared tags.
Figure 17 - Illustration of Produced and Consumed Tags
Topic Page
Connection Overview 123
Produce and Consume (interlock) Data 123
Send and Receive Messages 125
Calculate Connection Use 127
Additional Resources 130
Controller_2
Controller_3
Controller_4
Consumed Tag
Consumed Tag
Consumed Tag
Controller_1
Produced Tag

Allen-Bradley 1756-L61 Specifications

General

Brand	Allen-Bradley
Model	1756-L61
Category	Controller
Language	English