LSIS XGT Series - Page 629

Chapter 11 Datalog Function
11-9
Note
If the data are saved using the LINT type, the following may not be represented when verifying the data
through Excel.
☞ Actual save data
☞ Data verified through Excel
In such cases, you can view the normal data by reading the data using Word Pad.
Note
Float conversion, such as REAL type, supports IEEE754 standards as follows.
BIT 31
BIT 0
Sign (S)
Exponent
E)
Fix
d
Decimal Point (F)
Sign (S): 1 BIT
Exponent (E): 8 BIT
Fixed Decimal Point (F): 23 BIT
Conversion Value:(-1)
S
Х (1+FХ2
-23
)Х2
(E-127)
0< Exponent (E) < 255  integer
Exponent (E) = 0, Fixed Decimal Point (F) = 0  0 (ZERO)
Exponent (E) = 0, Fixed Decimal Point (F) > 0  Conversion value close to 0
Exponent (E) = 255, Fixed Decimal Point (F) = 0  INFINITY
Exponent (E) = 255, Fixed Decimal Point (F) > 0  NAN
Note
In case of REAL, LREAL types, –NaN, +NaN are saved for undefined data, and -INF, +INF character strings
are saved for data with infinite range.
Please verify the data save range before use.