Wiring
8.8 Connecting interfaces for communication with S7-1500R
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
271
8.8 Connecting interfaces for communication with S7-1500R
Connecting interfaces for communication
Connect the communication interfaces of the CPUs using standardized plug connectors.
Use prefabricated connecting cables for the connection. If you want to prepare
communication cables yourself, the interface assignment is specified in the CPU manuals.
Observe the mounting instructions for the connectors.
8.8.1 Connecting the PROFINET ring to S7-1500
Introduction
Use the RJ45 sockets of the PROFINET interfaces X1 P1R and X1 P2R to connect the PROFINET
ring between the two R-CPUs.
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)
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