Functions
5.8 Device replacement without exchangeable medium
PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH
211
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.
Failure and replacement of an IO device
The following example describes device replacement without exchangeable medium in the
case of failure of an IO device.
Figure 5-75 Example configuration of device replacement without exchangeable medium
For the device replacement, the following information is available to the IO controller:
"port-002.Controller", "port-001.Press", "port-001.Pump"
"port-002.Switch", "port-001.Mill"
Pump "port-004.Switch"
The IO device with the device name "Mill" fails in this example:
The PROFINET device replacing the removed one has no device name.
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