User manual

Rockwell Automation Publication 1756-UM001O-EN-P - October 2014 119
Chapter 7
Manage Controller Communication
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 via the Logix Designer application
• Controller access via RSLinx Classic or RSLinx Enterprise applications for
HMI or other applications
Produce and Consume
(Interlock) Data
ControlLogix controllers let you produce (transmit) and consume (receive)
system-shared tags.
Topic Page
Connection Overview 119
Produce and Consume (Interlock) Data 119
Send and Receive Messages 121
Calculate Connection Use 122