Panasonic FP E Series User Manual page 285

Note2)If no battery is ued, only the fixed area is backed up. (counters 16 points: C1008 to C1023,
internal relays 128 points: R2480 to R255F, data registers 55 words: DT32710 to DT32764).
Writing is available up to 10000 times. Then the optional battery is used, all area can be backed
up. Areas to be held and not held can be specified using the system registers. If an area is held
when the battery is not installed, the value of data may be indefinite as it is not cleared to 0 when
the power is turned on. When the battery ran out of the power, the data at the hold area will be
indefinite.
Note3)The points for the timer and counter can be changed by the setting of system register 5. The
number given in the table are the numbers when system register 5 is at its default setting.
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