Mitsubishi FX3G Series

494
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.5 FNC117 – EVAL / Character String to Floating Point Conversion
2) In the program shown below, a character string stored in D10 and later is converted into binary floating point, and
stored to D100 and D101 when X000 turns ON
Operations at overflow, underflow and zero
Condition Operation
The absolute value of the conversion
result is less than "2
−126
".
The value of is the minimum value (2
−126
) of 32-bit real numbers and the borrow flag
M8021 turns ON.
The absolute value of the conversion
result is not less than "2
128
".
The value of is the maximum value (2
128
) of 32-bit real numbers and the carry flag M8022
turns ON.
The conversion result is true "0".
(The mantissa part is "0".)
The zero flag M8020 turns ON.
X000
FNC117
DEVALP
D10 D100
b15 b8 b7 b0
D11
Ignored.
D101
1.2345E − 2
20H(space)
2EH(.)
33H(3)
35H(5)
20H(space)
31H(1)
32H(2)
34H(4)
2DH(-) 45H(E)
Rounded.
D10
D13
D12
D16
D14
32H(2) 30H(0)
D15
D100
3 4 521 0E 2
END
00H
D
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