VIPA System 300V - Page 47

Manual VIPA System 300V Chapter 3 Hardware description
HB130E - CPU - Rev. 11/50 3-21
The following storage technologies are deployed at the CPU 31x:
Memory Type Description
Load memory battery
buffered RAM
Here is the battery buffered program code and data blocks also
in off-state.
Work memory RAM During program execution, the program code and data blocks
are stored in the work memory.
Internal Flash Flash-ROM With a copy command you may store the program code and
data blocks in the internal Flash-ROM. A read access happens
only at empty buffer battery.
MMC Flash-ROM External memory card for project engineering of CPU and DP
master and for firmware update of CPU, DP master and CP.
With a copy command you may store the program code and
data blocks from the CPU to MMC.
CompactFlash

Flash-ROM
The CompactFlash

is only used with the CPU 31xNET and
serves as external data memory.
The load memory is a battery buffered RAM where the program code and
data blocks are stored during project engineering.
After power-on of the CPU, it transfers the program code and data blocks
from the load memory in the unbuffered work memory.
In addition to the load memory, every CPU 31x has an internal Flash-ROM.
With the Copy-RAM-to-ROM command in the STEP

7 Manager from
Siemens, the program code and data blocks are transferred to the internal
Flash-ROM and stored permanently.
An access to the data in the internal Flash-ROM happens only at empty
buffer battery after boot-up when no MMC is plugged-in.
The Multi Media Card, in short MMC, is an external memory module and
can be ordered via the order no.: VIPA 953-0KX10.
CPU, CP and Profibus-DP master may use the CPU simultaneously for
project engineering and firmware update.
The MMCs are preformatted with the file system FAT16. With every
common MMC reading device, the MMC is linked-up to your PC as external
drive. This allows to create programs at the PC, to copy them onto MMC
and transfer them to the VIPA CPU by plugging-in the MMC.
More detailed information is to find in the chapter "Deployment CPU 31x"
As soon as a PC (CPU 31xNET) is integrated, it uses a CompactFlash

of
the type I or II for the external data storage.
This slot for the CompactFlash

is marked with "CF".
Memory of the
CPU
Load memory
Work memory
Internal Flash
MultiMediaCard
"MMC"
CompactFlash



Type II