Siemens Simatic CFU Commissioning Manual page 108

Servicing and maintenance
10.12 Restoring the state of delivery
RESET
Procedure
1. Press and hold down the Reset button until the ER/MT LED begins to flash (approx. 3
seconds).
2. Release the Reset button.
The CFU is reset to factory settings and restarts.
Result
The current firmware version remains unchanged.
The following data are deleted:
● Settable I&M data
● IP address, station name, etc.
● CFU configuration (e.g. parameters set with SIMATIC PDM)
● Configuration data of the CFU for field devices (FB<n>)
The parameter assignment of the field devices remains unchanged.
● Configurations and stored data of the freely configurable channels (DIQ<n>)
● Commissioning history
After the reset, the CFU restarts automatically.
The subsequent reaction depends on whether or not the PROFINET topology is configured in
HW Config:
● If the PROFINET topology is configured in HW Config:
After the reset, the CFU automatically receives the device name and IP address by means
of neighborhood detection.
● If the PROFINET topology is not configured in HW Config:
You must enter the device name and IP address for the CFU again and download all data
of the CFU.
You can find additional information about this in section "Preparing the CFU for
commissioning (Page 59)".
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Commissioning Manual, 07/2018, A5E39252870-AC
SIMATIC CFU