Siemens SIMATIC NET CP 442-1 RNA Equipment Manual page 5

Compatibility with other modules - service and maintenance
Note
Read the information regarding extended functions and restrictions in section Replacing the
modules used with CP 442-1 RNA (Page 58) of this manual!
Address label: Unique MAC address preset for the CP
The CP is supplied with a total of 2 default MAC addresses with the following assignment:
• Ethernet interface
• RNA interface
The two MAC addresses of the Ethernet interface and the RNA interface are printed on the
housing.
If you configure a MAC address (ISO transport connections), we recommend that you use the
MAC address of the relevant interface printed on the module for module configuration!
• This ensures that you assign a unique MAC address in the subnet!
• If you replace a module, the MAC address of the predecessor is adopted when you load
the configuration data; configured ISO transport connections remain operable.
Notes on this document
Abbreviations and names
• CP / device / module
Designations for the full product name
• STEP 7
Name for the STEP 7 V5.5 and STEP 7 Professional configuration tools
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CP 442-1 RNA
Equipment Manual, 03/2022, C79000-G8976-C318-05
Preface
5