Siemens 7MB1420, Instruction Manual, Page: 26 / 74

8.4 Organization of Data Storage
The EPROM and the EEPROM contain three parameter sets:
Basic factory-set data
User-specific data
Current data.
All parameters required to operate the FIDAMAT 5E are stored in the EPROM and are protected by
hardware (basic factory-set data). These data can be loaded into the current parameter memory
using function 53. The user-specific data set is overwritten in the process, however. The basic
factory-set data can only be overwritten by a hardware intervention.
A second parameter set (user-specific data) is present in an area of the EEPROM which can be
overwritten. The user can store a standard parameter set for his application here (see functions 55
and 57).
The third data set (current data) is the set which is automatically loaded when the analyzer is
switched on. This data set is modified according to the inputs. Note therefore when switching off
the analyzer and restarting that it is the current data set which was parameterized when the analyzer
was switched off which is loaded and not the user-specific data set.
Fig. 8.2 Organization of data storage
User-specific
data
EEPROM
Program
RAM
EPROM
Basic factory-
set data
Current
data
Current
data
Function 57
Automatically
when required
Restart
Function 53
Function 55
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