Siemens Simatic S7-1500H - Page 151

To connect an HMI device to the CPUs over Industrial Ethernet, you use the X2/X3 PROFINET
interfaces of the CPU. PROFINET interface X2/X3 supports PROFINET basic functionality. The
interface, for example, is suitable for communication with an HMI device or configuration and
programming software (Engineering Station).
NOTE
A PROFINET device (such as an HMI device) can only communicate with the redundant
system over the system IP address if it has been connected to both R/H-CPUs. Always connect
the PROFINET device to the same interfaces, X1 or X2/X3, on both R/H-CPUs. Do not mix
interfaces X1 and X2/X3: If you mix interfaces X1 and X2/X3, the HMI connection is no longer
redundant.
Integrate a switch into the PROFINET ring to connect an HMI device to the PROFINET ring. Use
this to establish a connection to the HMI device.
The PROFINET ring is set up using the PROFINET IO interfaces (X1) of the CPUs. If you operate
HMI devices within the ring, you need to assign the MRP role "Client" to the MRP domain. You
can find more information on HMI device application planning in the section Requirements
(Page 72).
NOTE
Connecting the HMI device to a line topology
To connect an HMI device to a line topology, also connect the HMI device to the line topology
via a switch. Assign the MRP role "Not device in the ring" for the HMI device.
You can find more information on the interfaces of the
CPUs1518HF-4PN/1517H‑3PN/1515R-2 PN in the relevant equipment manual.
151
Application planning
5.7 Using HMI devices
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD