Siemens SIMATIC S7-1500 System Manual page 210

Configuration
8.6 Display of the IO device assignments in STEP 7
The table contains all assignments of IO devices to the PROFINET interfaces of the redundant
S7-1500R/H system.
The "Operating mode" column indicates how the IO device is connected to the S7-1500R/H
redundant system:
• IO device (S2): IO device is connected system redundant.
• IO device (R1): IO device is connected system redundant.
• IO device (S1): IO device is connected over the "Switched S1 device" function.
If you want to change the operating mode of an IO device, then click on the entry and select
another operating mode.
The following figure shows how STEP 7 displays the two IO devices with system redundancy
S2 in the tabular view of the network view.
Figure 8-11 Display of the IO device assignments in STEP 7
Reference
Calculation of the PROFIsafe monitoring time
For the calculation of the PROFIsafe monitoring time you will find the times RDHT [ms] and
MTOT [ms] in the right area of the "I/O communication" view.
Figure 8-12 Display of time information RDHT and MTOT
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S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD