Siemens SIMATIC S7-1500 Function Manual page 111

Diagnostics of the S7-1500R/H redundant system
7.3 Diagnostics view in the project tree and in the device view and network view
Alarm display of the system
As in the RUN-Solo system state, the alarms of the CPU for which there is an online
connection are displayed via the "Alarm display" tab (in the example from PLC_1).
Figure 7-9 Diagnostics example: Alarm display of redundant system (RUN-Solo)
Device view of the IO device
The IO device is an interface module IM 155-6 PN HF with two I/O modules and one server
module. The device view shows that there is no faults in the modules.
Figure 7-10 Diagnostics example: Device view of IO device
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Function Manual, 11/2019, A5E03735838-AF
Diagnostics