Mitsubishi MELSEC Q Series, Programming Manual

Page: 532 / 816

7-192
7.11 String Processing Instructions
7.11.10 Character string data to 16-/32-bit BIN data conversion
VAL, DVAL
(8) In cases where the character string specified for contains 20
H
(space) or 30
H
(0) between
the sign and the first numeric value other than 0, these 20
H
and 30
H
are ignored in the
conversion to BIN value.
O peration Error
In any of the following cases, an operation error occurs, the error flag (SM0) is turned ON, and
the corresponding error code is stored to SD0.
• The number of characters in the character string specified for is outside of the ranges
shown below. (Error code: 4100)
When VAL(P) instruction is in use .................... 2 to 8 characters
When DVAL(P) instruction is in use .................. 2 to 13 characters
• The number of characters for decimal fraction of the character string
specified for falls outside the ranges shown below. (Error code: 4100)
When VAL(P) instruction is in use .................... 0 to 5 characters
When DVAL(P) instruction is in use .................. 0 to 10 characters
• The total number of characters of the character string specified for and the number of
characters for decimal fraction stand in a relationship that is outside of the range
indicated below.
(Error code: 4100)
Total number of characters minus 3 is equal to or greater than the number of characters
for decimal fraction.
• ASCII code other than 20
H
or 2D
H
has been set for the sign. (Error code: 4100)
• ASCII code other than from 30
H
to 39
H
or 2E
H
(decimal point) has been set for digits of
each number. (Error code: 4100)
• There has been more than one decimal point set in the value. (Error code: 4100)
• The value of the BIN value when converted falls outside of the following ranges.
(Error code: 4100)
When VAL(P) instruction is in use .................... 32768 to 32767
When DVAL(P) instruction is in use .................. 2147483648 to 2147483647
• No 00
H
is set within the range from the device number specified for to the last device
number of the corresponding device. (Error code: 4101)
s
6 5 4 3 . 2 1
Ignore d
12
2
Total num b er of d igits
Num b er of d igits
in d ecimal fraction
BIN d ata
0 0 0 0 5 4 3 2 1
Ignore d
11
8
.
S ign
6 5 4 3 2 1
5 4 3 2 1
Total num b er of d igits
Num b er of d igits
in d ecimal fraction
BIN d ata
s
s
s
s