Mitsubishi MELSEC Q Series Programming Manual page 591

When using decimal point format
S2
Decimal point format
S2 +1
Total number of digits
+2
S2
Number of digits in decimal fraction
S1 +1 S1
32-bit floating-point real number
.
Sign
b15 b8 b7
ASCII code for the
D
ASCII code for the sign
(total number of digits -1)
th digit
ASCII code for the ASCII code for the
D +1
(total number of digits -3) (total number of digits -2)
th digit th digit
ASCII code for the
ASCII code for
D +2
(total number of digits -5) decimal point (.)
(2E
th digit
H
ASCII code for the
ASCII code for the
D +3
(total number of digits -7) (total number of digits -6)
th digit
th digit
00
+4
D
H
Automatically stored at the
end of character sting
ESTR(P)
1
b0
2
3
)
4
6
6
7
8
7-217