User Manual

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014 11
Isolated Analog I/O Module Operation in the ControlLogix System Chapter 1
Ownership
Every I/O module in the ControlLogix system must be owned by a ControlLogix
controller. This controller performs the following:
• Stores configuration data for every module that it owns.
• Resides in the local or remote chassis in regard to the I/O
module’s position.
• Sends the I/O module configuration data to define the module’s behavior
and begin operation in the control system.
Each ControlLogix I/O module must continuously maintain communication
with its owner to operate normally. Typically, each module in the system has only
one owner. Input modules can have more than one owner. Output modules,
however, are limited to a single owner.
Configure a Module
You use the I/O configuration portion of the Logix Designer application to
configure each I/O module. An I/O module can reside in either of the following:
•Local chassis - The chassis in which the owner-controller resides.
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