IAI America ASEL - Manual (Page 5)

CAUTION
Optional System-Memory Backup Battery
The ASEL controller can be used with the optional system-memory backup battery.
Caution: When installing the system-memory backup battery, “Other parameter No. 20” must be set to “2.”
Installing the system-memory backup battery will add the following functions to the controller:
x Save SEL global data
Data of global variables, flags and strings will be retained even after the main power is turned off.
x Save RAM position data
Position data changed by SEL programs will be retained even after the main power is turned off.
x Save an error list
An error list containing up to 100 most recent errors will be retained even after the main power is
turned off.
If you need any or all of the above functions, you must install the optional system-memory backup battery.