Siemens SIMATIC ET 200AL, System Manual

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Functions
5.9 Device replacement without exchangeable medium
PROFINET with STEP 7
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Function Manual, 05/2021, A5E03444486-AL
Note
When you exchange a device, make sure that the PROFINET cable is again inserted into the
correct port, as it is configured in STEP 7.
Otherwise, the device names can be assigned incorrectly.
Advantages
With the Device replacement without exchangeable medium/PG PROFINET functionality, you
can profit from the following advantages:
•
After the replacement of the IO device, it automatically obtains its device name from the
IO controller. You no longer have to assign device names with the PG or exchangeable
medium.
• You can save on the storage medium for the IO device that replaces the removed one.
• Simple device name allocation with series machines that have the same configuration and
set topology. It is no longer necessary to assign device names via exchangeable
medium/PG.
Which devices support device replacement without exchangeable medium?
An overview of the devices that support the "Device replacement without exchangeable
medium" function is provided in this FAQ
( https://support.industry.siemens.com/cs/ww/en/view/36752540 ).
5.9.1 Device replacement without exchangeable medium/PG function
Neighborhood
Neighborhood is the physical relationship between two ports of adjacent PROFINET devices. A
PROFINET device is connected in this case through one of its ports over a physical Ethernet
line to a specific port of the second PROFINET device in close proximity (neighbors).
Both terminal devices, for example, IO controllers and IO devices with a port, and network
components, for example, switches, IO controllers and IO devices with multiple ports, are
considered PROFINET devices.