IAI America SSEL User Manual

Page 98

Part 1 Installation

3. Replacement Procedure for System-Memory Backup Battery (Optional)

Backing up the system memory

If the optional system-memory backup battery is installed in the SSEL controller and “Other parameter No. 20:
Backup battery installation function type” is set to “2” (Installed), the following SRAM data will be retained even
after the power is turned off:

x Position

data

x SEL global data (flags, integer/real variables, string variables)

x Error

list

Be sure to follow the procedure below when replacing the system-memory backup battery.

Note: If the system-memory backup battery is removed while other parameter No. 20, “Backup battery

installation function type” is still set to 2 (Installed), the above SRAM data will be lost.

: So that your position data can be restored even after the SRAM data has been lost, use the PC

software to save the position data to a file beforehand.
For information on how to save position data to a file, refer to 6, “Position Data Edit Window” in
“Operation Manual for X-SEL PC Software.”

(1) Turn on the controller power.

(2) Record (write down) the current setting of “Other parameter No. 20, Backup-battery installation function

type.” (This will be used when reverting the parameter to its original setting following the replacement of
system-memory backup battery.)

(3) If the PC software is installed in your PC, save the position data to a file using the PC software. The data

will be used as a backup in case the SRAM data saved to the flash ROM fails.

(4) Change “Other parameter No. 20, Backup-battery installation function type” to “1” and transfer the setting to

the controller, and then perform a flash ROM write. (The point data will be saved to the flash ROM.)

* Confirm that the flash ROM writing process has completed.

(5) Perform a software reset to restart the controller. (The SEL global data and error lists will be saved to the

special area in the flash ROM.)

(6) When the controller has been restarted, turn off the power.

* Be sure to keep the power on from the start of controller restart until the RDY LED lamp on teh controller illuminates.

(7) Replace the system-memory backup battery. (SRAM data will be lost if steps (1) through (6) are not

performed properly.)