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Siemens CP 343-1 User Manual

Siemens CP 343-1
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CP 343-1
Manual, 12/2018, C79000−G8976−C201-08
57
Service and maintenance
7
7.1
Memory reset / reset to factory defaults
If the CP was configured with the "Status-dependent" protection level, the following two
functions are available only when the CPU is in STOP mode. You will find a setting in the
properties dialog of STEP 7 > "Options" > Module access protection tab.
Available functions
The CP has a twolevel function available for resetting memory:
Memory reset
Following this memory reset, the CP retains the preset MAC address and the retentive
parameters. The CP is therefore immediately ready for downloads using the IP address.
The retentive parameters include:
IP address, subnet mask and, if applicable, router address
LAN settings
Reset to factory settings
After resetting, the CP only contains the default MAC address (as shipped).
Note
The functions for memory reset and resetting to defaults described here do not change
the configuration data on the CPU!
If you subsequently upload the configuration data from the CPU to a PG you wil
l always
obtain the configuration data that was previously on the CP (with parameters,
connections, IP address).
How to use the function
You can start the memory reset functions in STEP 7.
Memory reset
In STEP 7 V5.5 with the menu command "PLC" > "Clear/Reset"
In STEP 7 special diagnostics with the "Operating Mode" > "Clear/Reset Module"
menu command
In STEP 7 Professional V11 with STEP 7 special diagnostics

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Siemens CP 343-1 Specifications

General IconGeneral
Product Type DesignationCP 343-1
Power Supply24 V DC
Protection ClassIP20
Product TypeCommunications processor
InterfaceEthernet
Data Transmission Rate10/100 Mbit/s
Protocols SupportedTCP/IP, UDP
Number of Ports1
Operating Temperature0 to 60 °C

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