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Program processing and
system time
10/10 MN05003004Z-EN
42
Limit values for memory usage
The data memory of the XC100 is divided into memory segments.
The segment sizes are shown in figure 54. The global data utilises
multiple segments. The required amount can be specified to suit
the size of the loaded program.
The segment size for the different control types can be found under
‹Target Settings
l
Memory Layout›:
The hexadecimal values of the other PLC types must be converted
to decimal values.
In order to ensure that you use the available memory for the global
data in an optimum and efficient manner, we recommend that you
make the following settings when a new project is being created:
The number of segments is set to 1 by default.
The number of segments is changed as follows:
X
Select ‹Project
l
Options
l
Compile options›; select the data
segments field and enter the number of segments listed above
for the respective control type.
Figure 54: Segment size of the XC-CPU101-C256k
PLC type
Number of data segments
(global)
XC-CPU101-C64K-8DI-6DO
16
XC-CPU101-C128K-8DI-6DO
12
XC-CPU101-C256K-8DI-6DO
14
Figure 55: Memory management: Change the number of data
segments
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