648
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
26.2 FNC201 – VAL / Character String to BIN Conversion
Outline
This instruction converts a character string (ASCII codes) into binary data.
On the other hand, EVAL (FNC117) instruction converts a character string (ASCII codes) into floating point
data.
→ For character strings, refer to Section 5.3.
→ For EVAL (FNC117) instruction, refer to Section 18.5.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (VAL and VALP)
1) A character string stored in and later is converted into 16-bit binary data. The number of all digits
of the binary data acquired for conversion is stored in , the number of digits of the decimal part is
stored in +1, and the converted binary data is stored in .
In converting a character string into binary data, the data from to a device number storing "00H" is
handled as a character string in byte units.
Operand Type Description Data Type
Head device number storing a character string to be converted into binary data Character string
Head device number storing the number of all digits of the binary data acquired
by conversion
16-bit binary
Head device number storing the binary data acquired by conversion 16- or 32-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
VZModifyKH E "
"P
3333 3
3333 3
3 3 3 3333 3 3
DVAL
DVALP
Mnemonic Operation Condition
P
FNC 201
VAL
D
16-bit Instruction
7 steps
VAL
VALP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
13 steps
Continuous
Operation
Pulse (Single)
Operation
S
D
1
D
2
S
D
1
D
2
S
D
1
D
1
D
2
S
Command
input
FNC201
VAL
D
1
S
D
2
+0
Number of all
digits
Number of digits
of decimal part
-
Sign
D
1
+0
+1
b15
+2
+3
+4
b8 b7 b0
It indicates the end of character string.
S
D
2
Integer value in
which decimal
point is ignored
+1
16-bit binary data
1st character
2nd character
7th character
ASCII code of 1st character
ASCII code of 3rd character
ASCII code of 5th character
ASCII code of 7th character
ASCII code indicating sign
ASCII code of 2nd character
ASCII code of 4th character
ASCII code of 6th character
00H
To Next Page
Loading...
