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
Response during commissioning
Select the option "Permit overwriting of PROFINET device names of all assigned IO devices"
only if the following requirements are fulfilled:
•
All the configured IO devices are available.
• All IO devices are wired correctly in accordance with the topology configuration.
• No IO device is jumpered.
If configured IO devices are missing or are jumpered (partial commissioning), do not use the
option.
You can also use the option for standard machine projects in which you adjust the
configuration later via ReconfigIOSystem. Always keep in mind that it is always the
configuration that was transferred to the IO controller in the control data record via the
instruction ReconfigIOSystem Mode:=2 that is valid. As soon as you enable the
reconfiguration with ReconfigIOSystem Mode:=3, the PROFINET device names are
overwritten as defined in the data record.
CAUTION
Error at partial commissioning
If device names are assigned incorrectly during partial commissioning or incorrect wiring,
these have to be deleted manually after a correction of the wiring in order to attain correct
assignment of the device names.
Behavior during operation
As soon as you replace a device, the new device is overwritten with the configured PROFINET
device name.
The PROFINET device name is not overwritten when the MAC address of the IO device is
already actively being used in the project.
WARNING
Wrong PROFINET device name
When the "Permit overwriting of PROFINET device names of all assigned IO devices" option is
enabled, incorrectly connected devices can be assigned an incorrect PROFINET device name
from the configuration.
Depending on the connected I/O, there is risk of death, severe injuries or damage caused by
malfunctions.
To rule out any danger, check whether the suitable replacement device has been connected
in case of a device replacement and whether the port interconnection matches the
configured preset topology.