Chapter 3 PLC System Configuration & Settings 3.2.2.12 Replace Backplanes To replace backplanes, users can follow these steps: (1) Right-click on the left side of a backplane to be replaced and choose Replace from the context menu. (2) Double-click on the selected rack (backplane model) to be replaced in the window. Additional remark When the slot number of the new backplane is smaller than the original backplane, please be take note that once replace is executed, modules in the original backplane with slot number exceeding the new backplane is automatically deleted. When using AH560 redundant system with Redundancy function enabled, only the main redundant backplane 3-147