Mitsubishi Electric FX3G SERIES Programming Manual page 501

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
a) In the case of decimal point format
b15
S
+1
S
+2
S
+3
S
+4
S
b) In the case of exponent format
b15
S
+1
S
+2
S
+3
S
+4
S
+5
S
+6
S
• When a character string to be converted into binary floating point specified by
the sign, decimal point and exponent part, the conversion result may contain rounding error.
a) In the case of decimal point format
b15
S
+1
S
+2
S
+3
S
+4
S
+5
S
+6
S
18.5 FNC117 – EVAL / Character String to Floating Point Conversion
b8 b7
31H(1) 2DH(-)
30H(0) 2EH(.)
38H(8) 37H(7)
32H(2) 31H(1)
00H
1 0 7 8 1 2
b8 b7
20H(space) 2DH(-)
2EH(.) 31H(1)
32H(2) 33H(3)
31H(1) 30H(0)
2BH(+) 45H(E)
30H(0) 31H(1)
00H
1 3 2 0 1 E + 1 0
b8 b7
20H(space) 2DH(-)
31H(1) 20H(space)
33H(3) 2EH(.)
31H(1) 30H(0)
36H(6) 35H(5)
31H(1) 38H(8)
00H 32H(2)
1 3 0 1 5 6 8 1 2
Rounded.
18 Floating Point – FNC110 to FNC139
b0
+1
D D
−1.07812
Binary floating point
(real number)
b0
+1
D D
−1.3201E+10
Binary floating point
(real number)
S
b0
+1
D
−1.30156
Up to 6 digits are securely
equivalent.
Binary floating point
(real number)
has 7 digits or more excluding
D
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