Chapter 18 Testing and Debugging Tools AH560 Redundant System Series Status Change Log After users click the Status Change Log tab, they can view the log related to the change of the status of the CPU module. After users click Refresh , the system will retrieve data from the CPU module, and the data displayed in the pop-up window isupdated. After users click Clear Log , the status change log in the pop-up window and the status change log in the CPU module is cleared. 18-37