PROFINET IO Addressing
Every module within a PROFINET network has three addresses:
- MAC address
- IP address
- Device name, a logical name for the module within the total configuration
Because PROFINET uses TCP/IP a MAC and IP address are used. A MAC address changes if the device is replaced. An IP address is a form of dynamic addressing. Because there was a need for a fixed address a device name is used.
For allocation of the IP address, subnet mask and default gateway two methods are defined:
- DCP: Discovery and Configuration Protocol
- DHCP: Dynamic Host Configuration Protocol
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