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Rockwell Automation Publication 5069-UM004A-EN-P - April 2019
Chapter 1
Digital Module Operation in a Control System
Connections with Compact 5000 I/O Safety Modules
During module configuration, you must define the module. Among the
Module Definition parameters with Compact 5000 I/O safety modules, you
must choose how module is configured.
The choice depends on whether the project is downloaded to the controller
that owns the module configuration, that is, the owner-controller, or to a
controller that is listening to input modules in a project.
A real-time data transfer link is established between the controller and the
module that occupies the slot that the configuration references.
When you download module configuration to a controller, the controller
attempts to establish a connection to each module in the configuration.
Because part of module configuration includes a slot number in the local
Compact GuardLogix 5380 controller system or remote Compact 5000 I/O
system, the owner-controller checks for the presence of a module there. If a
module is detected, the owner-controller sends the configuration. One of the
following occurs:
• If the configuration is appropriate to the module detected, a connection
is made and operation begins.
• If the configuration is not appropriate to the module detected, the data
is rejected and the Logix Designer application indicates that an error
occurred.
The configuration can be inappropriate for many reasons. For example, a
mismatch in electronic keying that helps prevent normal operation.
The owner-controller monitors its connection with a module. Any break in the
connection, for example, the loss of power to a remote Compact 5000 I/O
system, causes a fault. The Logix Designer application monitors the fault status
tags to indicate when a fault occurs on a module.