Siemens SIMATIC ET 200AL System Manual page 1649

Diagnostics and maintenance
4.3 Diagnostics via the display of the S7-1500 CPUs
Module status
To show the module status, navigate on the display through the menu items "Module" >
"PROFINET I/O (X1)" > "Station" > "Slot" > "Status" > "Module status".
The module status indicates that a fault has occurred in the module. The "lower-level status"
is the status of the module in the diagnostics level below this. In the example, the status is
"good", i.e., the fault is not in the lower diagnostics level submodule or channel, but instead
in the module.
Figure 4-5
84
Display of module status
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL