8.1.2. Initializing a Safety CPU Unit Initialize a Safety CPU Unit in the following way. Go online with Safety Controller and change the operating mode to PROGRAM mode. On the CPU Expansion Racks Tab Page, right-click Safety CPU Unit and select Clear All The Clear All Memory for NX Unit Dialog Box is displayed. Check the contents and click Memory for NX Unit from the menu. Execute . 8.2. Initializing Robot Controller The settings of Robot Controller can be initialized by the parameter backup and restore operations (factory default settings). For information on the parameter backup and restore operations, refer to each Robot Controller Operation Manual. 37