Siemens SIMATIC PCS 7 - Figure 6-12 as 410 with Redundant Module Pairs

I/O configuration variants
6.6 Versions of I/O connection to the PROFINET IO interface
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
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Figure 6-12 AS 410 with redundant module pairs
Maintenance and service
One of the following functions is possible in each case during operation:
● Firmware update
● Replacing a module