Allen-Bradley ControlNet Compact GuardLogix 1769, User Manual, Page: 61 / 100

Control I/O Chapter 4
Ownership
In a Logix5000 system, modules multicast data. This means that multiple
controllers can receive the same data at the same time from a single module.
When you choose a communication format, you have to choose whether to
establish an owner or listen-only relationship with the module.
Type of Ownership Definition
Owner controller The controller that creates the primary configuration and communication connection to a module. The owner controller writes
configuration data and can establish a connection to the module. The owner controller is the only device that controls the
outputs.
An owner connection is any connection
that does not include listen-only in its
communication format.
Listen-only connection An I/O connection where another controller provides the configuration data for the I/O module. A controller using a listen-only
connection only monitors the module. It does not write configuration data and can maintain a connection to the I/O module
only when the owner controller is actively controlling the I/O module.
Listen-only Connection
Rockwell Automation Publication CNET- UM001E-EN-P - June 2016 61