Siemens Simatic S7-1500H Manual - Page 27

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Connecting

3.1 Terminal assignment

PROFINET interface X1 with 2-port switch (X1 P1 R and X1 P2 R)

The assignment corresponds to the Ethernet standard for a RJ45 connector.

● When autonegotiation is deactivated, the RJ45 socket is allocated as a switch (MDI-X).

● When autonegotiation is activated, autocrossing is in effect and the RJ45 socket is

allocated either as data terminal equipment (MDI) or a switch (MDI-X).

Figure 3-1

PROFINET interface X2 with 1 port (X2 P1)

The assignment corresponds to the Ethernet standard for a RJ45 connector.

Autocrossing is always active on X2. This means the RJ45 socket is allocated either as data

terminal equipment (MDI) or a switch (MDI-X).

Additional information

You can find additional information on the topic of "Connecting the CPU" and on the topic

"Accessories/spare parts" in the system manual for Redundant System S7-1500R/H

(https://support.industry.siemens.com/cs/ww/en/view/109754833).

Assignment of the MAC addresses

For each CPU, CPU 1515R-2 PN has:

● One PROFINET interface with two ports

● One PROFINET interface with one port

Each of the PROFINET interfaces has a MAC address and each of the PROFINET ports has

its own MAC address. There are a total of ten MAC addresses for the two CPUs of the

CPU 1515R-2 PN.

The MAC addresses of the PROFINET ports are needed for the LLDP protocol, for example

for the neighborhood discovery function.

The number range of the MAC addresses is sequential. The first and last MAC addresses

are printed on the rating plate on the right side of each CPU 1515R-2 PN.

Interface assignments

CPU 1515R-2 PN (6ES7515-2RM00-0AB0)

Equipment Manual, 11/2019, A5E42009914-AB