Expansion
FPΣ User's Manual
48
4.3 FPΣ Memory Expansion Unit
Parts and Functions
ON
ABC
FP
Σ
memory expansion unit
A
Front view
B
Left side view
C
Right side view
1
POWER LED (green)
2
BAT LED (red)
Off: Battery voltage is normal.
On: The voltage of the battery for memory backup is reduced, or the memory backup switch is
turned off.
3
Memory backup switch
Switch 1 and 2 must be turned ON to use the backup battery (factory setting is OFF). Without
backup battery, data is not saved when the power supply is turned off.
4
Expansion connector
Used to connect the unit to the CPU or another expansion unit.
5
Expansion hook
Used to secure an expansion unit.
6
DIN rail attachment lever
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