Meriam MFT 4010 Modular Calibrator_HART Communicator - Manual (Page 77)

72
DOF Memory Maintenance
DOF flash memory will become fragmented after many DOF download sessions to add new or update existing DOFs.
Fragmentation reduces the total number of DOFs that can be saved in memory. 600 DOFs is the nominal capacity of
the flash memory). When fragmentation becomes extreme, the MFT will not accept additional DOF downloads.
Periodic DOF memory maintenance will be needed to optimize DOF memory.
The Offline screen indicates the number of DOF files stored in memory and the
percentage of free memory available for additional files. 320 DOFs ideally use about
58% of the available memory, so 42% of DOF memory should be free. The example
at right indicates that only 27% of DOF memory is free. This indicates fragmentation.
To optimize DOF flash memory, it is necessary to delete all DOFs and then reload
them all in one session. Connect the MFT to a host PC that has DPC Manager
installed (see the DPC Manager Utility section of this manual for more information).
Launch DPC Manager and select the “Manage DPC Device Driver and Firmware
Updates” option. Go to the Tool Bar and click on “Settings”, then click on the
“Advanced” option. The following screen will appear.
Under “Update DOFs on DPC” section on left
side, click on the “Auto” button. An Auto
Install dialog box will appear.
Select the “Yes” response to the “DOF
Update Options? question to erase all
existing DOFs and re-load DOFs from the
default DOF directory.
320 DOFs will take approximately 90 minutes
to load.
Offline #
Utilities
List/Show DOFs
List/Edit Configs
Create Configs
Delete All Configs
DOFs: 331 Free: 29%
Configs: 3 Free: 99%
Up Down Select Back
HART Offline Menu Screen