Siemens SIMATIC PG 720 P Manual page 73

"Memory Cache" The following submenu appears when you select the "Memory Cache" field
Field
in the main menu:
Figure 6-4
A cache is a fast intermediate memory located in the CPU. Repeated memory
access operations can be carried out more quickly via the fast cache,
provided the feature is enabled. It may be necessary to disable the cache
when using certain hardware or software, because intentional program run
times or delay times are prevented by the fast cache.
PG 720 P Programming Device
C79000-G7076-C721-02
PhoenixBIOS Note BIOS 4.0 Setup-Copyright 1985-95 Phoenix Technologies Ltd.
Main Advanced Security Power Savings Exit
Memory Cache
Cache System BIOS:
[Enabled]
Cache Video BIOS: [Enabled]
F1 Help Select Item – / +
ESC Exit Select Menu Enter Select
"Memory Cache" Submenu
Configuring the PG 720
Item Specific Help
Controls Caching of System Bios,
which may improve the
performance of your
applications.
Change Values F9 Setup Defaults
Sub-Menu F10 Previous Values
6-9