Addresses - Siemens SINAMICS S120 Series Function Manual

Communication via PROFINET IO
5.1 General information about PROFINET IO
5.1.2

Addresses

MAC address
Every Ethernet and therefore every PROFINET interface is assigned a worldwide unique
device identifier in the factory. This 6-byte long device identifier is the MAC address. The
MAC address is divided up as follows:
● Three bytes for the manufacturer's ID
● Three bytes for the device identifier (consecutive number)
The MAC address is printed on a label (CBE20) or specified on the type plate (CU320-2 PN
and CU310-2 PN), e.g.: 08-00-06-6B-80-C0.
The Control Units CU320-2 PN and CU310-2 PN have two integrated interfaces:
● One Ethernet interface
● One PROFINET interface with two ports
The MAC addresses of the Ethernet and PROFINET interfaces are stamped on the type
plate.
IP address
The TCP/IP protocol is a prerequisite for establishing a connection and parameterization. To
allow a PROFINET device to be addressed as a node on Industrial Ethernet, this device
requires a unique IP address in the network. The IP address is made up of 4 decimal
numbers with a range of values from 0 through 255. The decimal numbers are separated by
a decimal point. The IP address comprises:
● The address of the node (also called host or network node)
● The address of the (sub) network
IP address assignment
The IP addresses of IO devices can be assigned by the IO controller and always have the
same subnet mask as the IO controller. In this case, the IP address is not stored
permanently. The IP address entry is lost after POWER ON/OFF. The IP address can be
assigned retentively via the Startdrive function "Accessible nodes" (see SINAMICS S120
Commissioning Manual with Startdrive).
This function can also be performed with HW Config of STEP 7. The function is called "Edit
Ethernet node" here.
Note
IP addresses of the onboard interfaces
It is not permissible that the IP address band of the Ethernet interface and the PROFINET
interface are the same. The factory setting of the IP address of the Ethernet interface X127
is 169.254.11.22; the subnet mask is 255.255.0.0.
Note
If the network is part of an existing Ethernet company network, obtain the information (IP
address) from your network administrator.
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Function Manual, 12/2018, 6SL3097-5BD00-0BP0
Communication