Mitsubishi Electric MELSEC FX3U - Page 651

649
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
26 Character String Control – FNC200 to FNC209
26.2 FNC201 – VAL / Character String to BIN Conversion
21
FNC160-FNC169 Real Time Clock Control
22
FNC170-FNC179 External Device
23
FNC180 Alternate Instructions
24
FNC181-FNC189 Others
25
FNC190-FNC199 Block Data Operation
26
FNC200-FNC209 Character String Control
27
FNC210-FNC219 Data Operation 3
28
FNC220-FNC249 Data Comparison
29
FNC250-FNC269 Data Table Operation
30
FNC270-FNC274 Ex-Device Inverter Comms
For example, when a character string "-123.45" is specified in and later, the conversion result is
stored in and as shown below.
2) Character string to be converted
a) Number of characters of character string and the numeric range when the decimal point is ignored
b) Character types used in characters to be converted
3) stores the number of all digits. The number of all digits indicates the number of all characters
(including the number, sign and decimal point).
4) +1 stores the number of digits of the decimal part. The number of digits of the decimal part indicates
the number of all characters after the decimal point "." (2EH).
5) stores 16-bit data (bin) converted from a character string with the decimalpoint ignored.
In the character string located in and later, "space" (20H) and "0" (30H) characters between the
sign and the first number other than "0" are ignored in the conversion to 16-bit binary data.
Description
Number of all characters (digits) 2 to 8
Number of characters (digits) of decimal part 0 to 5 and smaller than "number of all digits -3"
Numeric range when decimal point is ignored
−32768 to +32767
Example: 123.45 → 12345
Character type
Sign
Positive numeric value "Space" (20
H)
Negative numeric value "–" (2D
H)
Decimal point "." (2E
H)
Number "0" (30
H) to "9" (39H)
S
D 1 D 2
+0
7
2
- 1 2 3 4 5
D 1 
+0
+1
b15
+2
+3
b8 b7 b0
It indicates the end of the character string.
S 
D 2 
-12345
+1
31H(1)
33H(3)
34H(4)
00H
2DH(-)
32H(2)
2EH( )
35H(5)
D 1
D 1
D 2
S
12
Number of all
digits
Ignored
Number of digits
of decimal part
16-bit binary
data
8
2
-12345
345-
00
Ignored
7
4
12
012
Sign
Number of all
digits
Number of digits
of decimal part
16-bit binary
data