7. Maintenance
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Figure 7-3. Initial Screen
The CPU also provides a “System Overview”, tab, which can be visualized through the Rack or via
the module list (right side of the screen). While there is no application on the CPU, this page displays
a configuration with the largest available rack plus a standard power supply, along with the
connected CPU. When the Rack visualization is used, the modules with diagnostics start blinking and
get a red color (Figure 7-4). Otherwise, it displays a list with the system-connected modules,
corresponding Tags and number of the active diagnostics: