568
7 APPLICATION INSTRUCTIONS
7.11 Character String Processing Instructions
Conversion from character string to floating-point data
EVAL(P)
*1 Applicable for the Universal model QCPU, LCPU.
• Converts character string stored in the area starting from the device number designated by (S) to 32-bit floating point type
real number, and stores result at device designated by (D).
• The designated character string can be converted to 32-bit floating point type real number data either in the decimal point
format or the exponent format.
• Basic model QCPU: The serial number (first five digits) is "04122" or later.
(S): Character string data to be converted to 32-bit floating decimal point real number data or head number of the devices where the character string data is
stored (character string)
(D): Head number of the devices where the converted 32-bit floating decimal point real number data will be stored (real number)
Setting
data
Internal device R, ZR J\ U\G Zn Constant
$
Others
Bit Word Bit Word
(S)
(D)
*1
• When using decimal point format
• When using exponent format
Basic
Process
High
performance
Redundant
Universal
LCPU
Ver.
Command
Command
EVAL
EVALP
S D
S D
EVAL
EVALP
+1
ASCII code for the signASCII code for the 1st character
ASCII code for the 3rd character
b15 b8
b7
b0
+2
ASCII code for the 5th character
ASCII code for the 7th character
+3
00
H
+4
Indicates the end
of character string
+1
32-bit floating-point
real number
S
S
S
S
S
ASCII code for the 2nd character
ASCII code for the 4th character
ASCII code for the 6th character
D D
+1
2DH (-)31H (1)
2E
H (.)30H (0)
+2
37
H (7)38H (8)
31
H (1)32H (2)
+3
00
H
+4
0
7
8
1 2.1-
+1
32-bit floating-point
real number
7-1 .
08
12
S
D
S
S
S
S
b15 b8
b7
b0
D
+1
2DH (-)20H (space)
31
H (1)2EH (.)
b15
b7
b0
+2
33
H (3)32H (2)
30
H (0)31H (1)
+3
45
H (E)2BH (+)
31
H (1)
+4
+5
+1
30H (0)
00H
-1.
3
2
01
E
+
1
0
1
1 . 3 2 0 1 E
+
1 0
32-bit floating-point
real number
+6
b8
S
S
S
S
S
S
S
D D
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