Siemens SIMATIC S7-1500R/H Getting Started page 22

Assign ET 200SP with system redundancy S2
To assign the ET 200SP distributed I/O systems to S7-1500H on a system-redundant basis,
connect every IM 155-6 PN HF interface module to every CPU.
To do so, proceed as follows:
1. Drag-and-drop a line between the PROFINET interface of IM 155-6 PN HF and
PROFINET interface X1 of the left-hand CPU.
2. Drag-and-drop a line between the PROFINET interface of IM 155-6 PN HF and
PROFINET interface X1 of the right-hand CPU.
3. Assign the two other IM 155-6 PN HF devices to the two CPUs in exactly the same way.
Result: The distributed I/O system ET 200SP are connected to S7-1500H on a system-
redundant basis.
Figure 2-3 ET 200SP assigned to S7-1500H on a system-redundant basis
S7-1500R/H redundant system
Getting Started, 10/2018, A5E44910930-AA
Configuration
2.1 Configuring the assembly
21