Siemens SIMATIC S7-1500 System Manual page 181

Requirements
• One of the two connections of the PROFINET ring between the two R-CPUs must not
contain any other IO devices, switches or other PROFINET devices apart from transparent
media converters.
• The default setting in STEP 7 is port 2 at PROFINET interface X1.
– Connect the PROFINET cable to the ports of the PROFINET interfaces of the two R-CPUs.
– The maximum length of the PROFINET cable is 100 m.
• You can extend the spatial distance between the two R-CPUs using a media converter
(electrical/optical). In this case, the maximum length depends on the type of media
converter used.
You can find more information in the documentation for the media converter:
– About the technical specifications
– About use
– About commissioning
• You connect the IO devices, switches and other PROFINET devices to the other PROFINET
ring connection. The default setting in STEP 7 is port 1 at PROFINET interface X1.
Accessories required
• PROFINET cable for the PROFINET ring
• Optional transparent media converter (electrical ⇔ optical)
Procedure
To connect the PROFINET ring at SIMATIC S7-1500R, follow these steps:
1. Swing the front cover on the R-CPUs up.
2. Plug the PROFINET cable RJ45 connectors into the RJ45 sockets at PROFINET interfaces X1
P2R on the two R-CPUs.
Figure 7-6 PROFINET interface X1 P2R: Connecting R-CPUs (bottom view)
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
7.8 Connecting interfaces for communication with S7-1500R
Wiring
181