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If a fault occurs, the basic device can then be replaced much faster and more simply. If a
device needs to be replaced, the C-PLUG is simply taken from the failed component and
inserted in the replacement device. As soon as it starts up, the replacement automatically
has the same device configuration as the failed device.
Formatting a C-PLUG and storing configuration data
Use only C-PLUGs that are formatted for the CP 343-1 ERPC. C-PLUGs that have already
been used and formatted in other device types must first be formatted for the
CP 343-1 ERPC device type.
You do this with STEP 7 / NCM Diagnostics. For more detailed information, refer to the
online help in the topic "General Diagnostics Functions - C-PLUG Diagnostics Object".
After formatting, all data areas are deleted on the C-PLUG. After formatting the C-PLUG of
the ERPC CP, only the ERPC Workbench configuration (assuming it had already been
loaded) and the ILS license file remain.
STEP 7 configuration data is adopted on a formatted C-PLUG as explained below when it is
inserted in the CP and the CP is inserted in the rack:
● After cycling power, the previous configuration data is adopted from the CPU assuming
● By downloading from the PG/PC, the configuration data from the STEP 7 project of the
Removing the C-PLUG
It is only necessary to remove the C-PLUG if a fault occurs on the basic device.
NOTICE
The C-PLUG must be removed only when the power is off!
Diagnostics
Inserting a C-PLUG containing the configuration of an incompatible device type, accidentally
removing the C-PLUG or general malfunctions of a C-PLUG are signaled by the diagnostic
mechanisms of the host device (SFLED red).
3.4
Module replacement
General procedure
The configuration data for the CP is stored either on the CPU or on the C-PLUG of the CP.
This means that the module can be replaced with a module of the same type (identical order
number) without needing a PG in the station.
CP 343-1 ERPC
Manual, 03/2010, C79000-G8976-C239-02
this option was configured, see above (section "Recommendations for data storage").
connected PC/PG is adopted.
Installation and commissioning
3.4 Module replacement
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