GE IC754VSI12CTD Operator Interface Products page 76

4
Do not remove power while the system is writing to flash
memory, such as when downloading a Proficy Machine
Edition project. Removing power while writing may lead to
data loss and file system corruption. To ensure the system
completes writing to flash and closes all files, see
"Shutdown" in chapter 1.
To add Flash memory with a CF Card

Insert a Compact Flash card into CF Port (see page 4-21).
The unit immediately reads the new secondary storage. If the disk
requires formatting, you will be prompted to do so.
New memory appears in Windows CE Explorer as
Storage.
External flash memory devices are named after their types of connection and
order of attachment. For example, if you connect two flash memory devices,
one via the CF port and one via the FieldBus connector, the first device
connected is named PCFlash Storage, the second PCFlash Storage2. At
powerup, a CF port device is recognized and named first. Otherwise name
depends on connection order.
SRAM Memory
This 512 KB block of static RAM is battery-backed to provide data retention
through a power cycle. This memory block is shared by the operating system
and user applications. A portion of the SRAM memory operates as a virtual
hard drive and is accessible from the Windows CE Explorer. It is represented
as the SRAM Storage folder. A typical application program would create a
file in this folder and store critical program data in that file.
The portions of SRAM used by the operating system and by user applications
varies between models.
12" QuickPanel* View Intermediate, Color and Monochrome – December 2010
4-34
Caution
PCFlash
GFK-2306E