GFK-2402D
Chapter 4 Detailed Operation
4-39
4
Caution
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
4-23)
.
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
PCFlash
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.
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