Ip Address - Siemens SIMATIC ET 200AL System Manual

Device number
In addition to the device name, STEP 7 also assigns a device number beginning with "1"
when an IO device is allocated.
The device number is located in the Inspector window in the properties of the PROFINET
interface, under "Ethernet addresses" in the area PROFINET.
Figure 3-3
This device number can be used to identify an IO device in the user program (for example,
with the instruction "LOG2GEO").
3.2.2

IP address

IP address
To allow a PROFINET device to be addressed as a device on Industrial Ethernet, this device
also requires an IP address that is unique within the network. The IP addresses are typically
assigned automatically by STEP 7 and assigned to the devices based on the device name. If
it is a standalone network, you can apply the IP address and subnet mask suggested by
STEP 7. If the network is part of an existing Ethernet company network, obtain the
information from your network administrator.
Configuration of the IP address
In accordance with Internet Protocol version 4 (IPv4), the IP address is made up of four
decimal numbers with a range of values from 0 through 255. The decimal numbers are
separated by periods (for example, 192.162.0.0).
The IP address consists of the following:
● Address of the network
● Address of the device (PROFINET interface of the IO controller/IO device)
PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH
Device number
Parameter assignment/addressing
3.2 Device name and IP address
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