Auto Save
This feature allows the database to be backed up automatically whenever database is
changed, instead of being an operator selected function. It does not provide any
safeguard and or protection against power loss while the process is underway.
However, this feature sends messages to HMI that the auto save operation is in
progress or finished.
The feature may be turned on or off using a prompt similar to the existing Autorestore
prompt. See the APOGEE BACnet ALN Field Panel User's Manual (125-3020) for
more information.
File System Operations
File System Operations provide many features and works on three drives of a field
panel.
The following is a list of supported features:
● List Drives — list the drives on the field panel where A: is the RAM drive, B: is the
USB drive if attached, and
IFD: is the internal Flash Drive.
● Set_drive — identifies the drive that you want to perform other functions on.
● listDirectory — lists the files and folders contained on the selected drive.
● Change_dir — changes the current directory to allow you to view the contents of
subfolders on the drive.
● File_ops — opens up the file control menu which allows you to copy, rename,
delete and move files in the panel. These functions work on the drive that was
selected by the Set_drive function.
● File_ops/Copy_file — allows you to copy files within a drive or to another drive.
● File_ops/Rename_file — allows you to rename a file.
● File_ops/Move_file — allows you to move a file within a drive or to another drive.
● File_ops/Delete_file — allows you to delete a file.
USB Media Support
● Support for USB mass storage devices (Memory sticks or USB hard drives).
● Backup of database, storage for graphics, Web Server upgrades
Random Access Memory (RAM)
Synchronous Dynamic Random Access Memory (SDRAM) is the working memory of
the PXC Compact. When the PXC Compact has booted and is operating normally, the
APOGEE firmware, the PPCL control program, the point database, and trend data
have been transferred from Flash ROM. Information stored in RAM, such as the point
database or PPCL, may be viewed, modified, deleted, activated, or deactivated from
an operator terminal by any high-level authorized user. In the event of a power loss,
the contents of RAM are kept intact by a backup battery.
PXC Compact RAM size cannot be upgraded in the field.
The program length, number of database points, and number of trend entries is limited
only by available memory.
Compact Series Backup Batteries
The PXC Compact Series contains one non-rechargeable AA (LR6) battery and one
non-rechargeable coin cell (BR2032) battery that serve as a power backup in the event
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