FPΣ User's Manual
4.3 FPΣ Memory Expansion Unit
49
General specifications
Item Description
Ambient temperature
0°C–+55°C
Ambient humidity
30–85% RH (at 25°C non-condensing)
Storage temperature
-20°C–+70°C
Storage humidity
30–85% RH (at 25°C non-condensing)
Vibration resistance
10–55Hz, 1 cycle/min, double amplitude of 0.75mm, 10min on 3 axes
Shock resistance
≥98m/s
2
, 4 times on 3 axes
Noise immunity
1000Vp-p, with pulse widths 50ns and 1μs (based on in-house measurements)
Operation conditions
Free from corrosive gases and excessive dust
Weight
≈80g
Performance specifications
Item Description
Memory
256 Kwords (1 Kword x 256 banks)
Battery life
≥5 years
Current consumption (5V)
≤100mA
Number of occupied points
16 input points
4.3.1 Data Organization
The data in the memory expansion unit is organized in 256 banks (1 bank = 1 Kword = 1024
words).
Banks are assigned hexadecimal numbers from 0 to FF and each bank has word addresses
ranging from 0 to 3FF (decimal 0–1023).
To read or write data in the memory expansion unit, the bank number and word address must
be specified.
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