Mitsubishi Electronics FX3G 사용자 설명서
494
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.4 FNC116 – ESTR / Floating Point to Character String Conversion
• The number of digits of the decimal part which can be specified by
+2 is from 0 to 7.
However, the following must be satisfied, "Number of digits of decimal part
≤ (Total number of digits - 7)"
For example, when the total number of digits is "12", the number of digits of the decimal part is "4", and
"-12.34567" is specified, data is stored in
"-12.34567" is specified, data is stored in
and later as shown below:
• The character string data after conversion is stored in the devices
and later as shown below:
- For the sign of the integer part, "20H (space)" is stored when the binary floating point data is positive, and "2DH
(-)" is stored when the data is negative.
- The integer part is fixed to 1 digit.
"20H (space)" is stored between the integer part and the sign.
- If the decimal part of the binary floating point data cannot be accommodated in the number of digits of the
decimal part, low-order digits of the decimal part are rounded.
- When the number of digits of the decimal part is set to any value other than "0", "2EH (.)" is automatically stored
in "specified number of digits of decimal part + 1"th digit.
When the number of digits of the decimal part is "0", "2EH (.)" is not stored.
When the number of digits of the decimal part is "0", "2EH (.)" is not stored.
- For the sign of the exponent part, "2BH (+)" is stored when the exponent is positive, and "2DH (-)" is stored when
the exponent is negative.
S
2
D
1
12
4
2 3 4 6 E + 0 1
Sign (integer part)
+1
+2
1
Sign (exponent part)
20H space
2EH(.)
0000H
b15
+1
+2
+3
+4
b8 b7
b0
0000H is automatically stored at the end of the
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 point
(real number)
−12.34567
Total number
of digits
Number of
digits of
decimal
part
Fixed to 2 digits
S
1
S
2
D
S
2
S
2
S
1
D
D
D
D
D
D
D
1
12
4
+1
+2
Total number of digits (12)
0
"20H (space)" is stored.
2 3 4 6 E +
1
1
Fixed to 1 digit
+1
−12.34567
S
2
S
1
S
1
S
2
S
2
1
12
4
+1
+2
Total number of digits (12)
0
2 3 4 6
E +
1
1
6 7
Number of digits of
decimal part (4)
Cut by rounding.
+1
−12.34567
S
1
S
1
S
2
S
2
S
2
1
12
4
+1
+2
Total number of digits (12)
0
2 3 4 6 E +
1
1
Number of digits of
decimal part (4)
Automatically added.
+1
−12.34567
S
1
S
1
S
2
S
2
S
2