Siemens SIMATIC CPU 410 System Manual page 252

System expansion card
15.1 Variants of the system expansion card
Figure 15-1
Increasing number of PO/enabling R1 redundancy
You can increase the number of POs in a CPU 410-5H without changing the SEC.
You can find information on how to increase the number of POs in
system, service support and diagnostics
The procedure for increasing the number of PO also applies for transferring the license key
for R1 redundancy of a distributed I/O.
252
SEC
(V8.1 or higher)
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
PCS 7 process control