Mitsubishi Electric MELSEC FX Series - Page 460

7 Applied Instructions
7.12 Floating Point
458
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
3. In the case of exponential type
• The number of all digits that can be specified by +1 is as follows. (Maximum: 24 digits)
When the number of digits below decimal point is "0" . . . . . . . . . . . .No. of digits ≥ 6
When the number of digits below decimal point is other than "0". . . .No. of digits ≥ (decimal digits + 7)
• Decimal digits that can be specified by +2 is 0 to 7 digits. Please set within the range of decimal digits
≤ (total digits - 7).
For example, in the case of all digits of 12 and decimal digits of 4, when -12.34567 is specified, the data after
is stored as follows.
Exponential type
All digits
Number of digits
below decimal point
E
Sign (integer part)
+1
+2
Sign
(exponential part)
Added
automatically.
ASCII code of digit number
(all digits specified value - 1)
ASCII code of digit number
(all digits specified value - 5)
(Decimal part)
ASCII code of digit number
(all digits specified value - 7)
(Decimal part)
ASCII code of the sign
ASCII code of digit number
(all digits specified value - 2)
ASCII code of digit number
(all digits specified value - 6)
(Decimal part)
0000H
b15
+1
+2
+3
+4
b8 b7 b0
To be stored automatically at the end of character string.
ASCII code of the sign
(exponential part)
ASCII code of digit number
(all digits specified value - 11)
(exponential part)
45H(E)
ASCII code of digit number
(all digits specified value - 10)
(exponential part)
+5
+6
+1
Binary floating decimal point (real number)
ASCII code of
decimal point (.) (2EH)
ASCII code of digit number
(all digits specified value - 4)
(Decimal part)
d
s1
s2
d
d
d
d
d
d
s2
s2
s1
1
12
4
2 3 4 6 E + 0 1
Sign (integer part)
+1
+2
1
Sign (exponential part)
20H (space)
2EH(.)
0000H
b15
+1
+2
+3
+4
b8 b7 b0
To be stored automatically at the end of character string.
33H(3)
36H(6)
2DH(-)
31H(1)
32H(2)
34H(4)
2BH(+)
31H(1)
45H(E)
30H(0)
+5
+6
+1
Binary floating decimal point (real number)
-12.34567
All digits
Number of digits
below decimal point
2 digits fixed
d
s1
s2
d
d
d
d
d
d
s2
s2
s1