Enable Major Fault on Controller

To display recent I/O fault information on the Major Faults tab of the controller properties, you must first select Major Fault on Controller if Connection Fails While in Run Mode on the Connection view of the I/O Properties dialog box.
WARNING:
If you select this option, a connection fault on the I/O module can cause a major fault on the controller. A major fault on the controller causes the outputs to go to their configured fault state.
Enable Major Fault on Controller
This image shows where to configure an I/O module fault to cause a major controller fault in Logix Designer.
When you are monitoring the configuration properties of a module in the
Studio 5000 Logix Designer®
 application and receive a communication fault message, the Major Faults tab for the controller properties indicates the type of fault under Recent Faults.
Major Faults Tab in Controller Properties
This image shows the Major Faults Tab on the Controller Properties dialog.
TIP:
You can use the Minor Faults and Networks tabs to check for minor faults and network fault, respectively.
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