
E. DATA BACKUP
B–63465EN/01
APPENDIX
138
Data in the Digital Servo Adapter includes the following:
Item Storage location
Parameter SRAM on the memory module
Data (SRAM data) stored in the SRAM on the memory module is
normally backed up by battery, so the data is not erased even when the
power to the Digital Servo Adapter is turned off. However, the data may
be lost because of, for example, a weak battery or printed–circuit board
replacement involving mounting and dismounting the memory module.
For this reason, the operator and maintenance personnel should always
save a backup copy on a memory card or floppy disk after rewriting the
data in the SRAM. For maintenance purposes, data stored in the SRAM
can be copied into the built–in FROM of the Digital Servo Adapter.
CAUTION
Be sure to take a backup copy of the latest SRAM data onto
a memory card or floppy disk. If the latest data is not backed
up, the SRAM data cannot be restored when it is lost.
A backup copy may be created using the following methods:
(1)Taking a backup copy onto a flash memory card
(2)Copying data in the SRAM memory card and taking its backup copy
onto the hard disk of the PC
(3)Taking a backup copy of data onto a floppy disk by using the Handy
File
The data mentioned above can be saved on and restored from a flash
memory card. With the method using the boot system (“SRAM DATA
BACKUP Screen” in Appendix C.2.5), a backup copy of SRAM data can
be created. With the method using the Digital Servo Adapter main unit
(see “SETTING/MAINTENANCE USING THE Digital Servo Adapter
MAIN UNIT” in Appendix F.4), SRAM data data can be backed up. For
how to handle the flash memory card, see the description of memory card
handling in APPENDIX D.
Data is copied onto the SRAM memory card in the same way as described
in Appendix E.2 above, then its backup copy is created on the hard disk
of the PC. A flash memory card cannot be used as the medium. Since the
SRAM memory card is backed up by battery, it is not suitable for data
preservation.
For how to handle the SRAM memory card, see the description of
memory card handling in APPENDIX D.
E.1
DATA IN THE Digital
Servo Adapter
E.2
BACKUP USING A
FLASH MEMORY
CARD
E.3
BACKUP ONTO THE
HARD DISK OF THE
PC