Program processing and
system time
03/05 AWB2724-1453GB
42
Limit values for memory usage
The data memory of the XC100 is divided into memory segments.
The memory size of the individual segments can be found in
figure 53. The global data avails of multiple segments. The
required quantity can be determined in dependance on the
program size.
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 53: 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 54: Memory management: Change the number of data
segments
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