Siemens SIMATIC ET 200AL, System Manual

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Communication with the redundant system S7-1500R/H
14.1 System IP addresses
Communication
Function Manual, 05/2021, A5E03735815-AJ
413
Enable system IP addresses
Requirements:
•
STEP 7 V15.1 or higher
• redundant system S7-1500R/H with two CPUs, e.g. two CPUs 1513R-1PN
If the CPUs of the S7-1500R/H redundant system have two PROFINET interfaces (X1 and X2),
then you can use a system IP address for both PROFINET interfaces. The following section
describes how to enable the system IP address for the interface X1.
Proceed as follows to enable the system IP address for your S7-1500R/H redundant system:
1.
In the network view of STEP 7, select the interface X1 of one of the two CPUs.
2. In the Inspector window go to "Properties" > "General" > "Ethernet addresses" in the area
"System IP address for switched communication".
3. Select the check box "Enable the system IP address for switched communication".
STEP 7 automatically creates a system IP address.
Figure 14-5 Configure IP address
4. Change the system IP address if necessary.
5. If required, change the virtual MAC address. To do this, in "Virtual MAC address", assign a
project-wide unique value (value range 01
H
to FF
H
) for the last byte.
Note
Uniqueness of the virtual MAC address
The redundant system S7-1500R/H uses a MAC address from the address range
00-00-5E-00-01-00 to 00-00-5E-00-01-00 for each system IP address. This address range is
also used for VRRP (Virtual Redundancy Protocol).
If you use devices with VRRP, e.g. switches, ensure the uniqueness of the MAC addresses
within an Ethernet broadcast domain.
Result: The system IP address X1 for the PROFINET interface X1 of the two CPUs is enabled.