16-Bit To Floating: Flt - Omron CQM1H - PROGRAM Programming Manual

Floating-point Math Instructions
Flags
5-24-3 16-BIT TO FLOATING: FLT(––)
Limitations
Description
Flags
354
Example conversions:
A floating-point value of 2,147,483,640.5 is converted to 2,147,483,640.
A floating-point value of –2,147,483,640.5 is converted to –2,147,483,640.
ER: Indirectly addressed EM/DM word is non-existent.
(Content of *EM/*DM word is not BCD, or the EM/DM area boundary
has been exceeded.)
ON if the data in S+1 and S is not a number (NaN).
ON if the integer portion of S+1 and S is not within the range of
–2,147,483,648 to 2,147,483,647.
EQ: ON if the result is 0000 0000.
Ladder Symbols
FLT(−−) @FLT(−−)
S
R
000
The content of S must contain signed binary data with a (decimal) value in the
range of –32,768 to 32,767.
DM 6143 to DM 6655 cannot be used for R.
When the execution condition is OFF, FLT(––) is not executed. When the exe-
cution condition is ON, FLT(––) converts the 16-bit signed binary value in S to
32-bit floating-point data (IEEE754-format) and places the result in R+1 and
R. A single 0 is added after the decimal point in the floating-point result.
R+1
Only values within the range of –32,768 to 32,767 can be specified for S. To
convert signed binary data outside of that range, use FLTL(––).
Example conversions:
A signed binary value of 3 is converted to 3.0.
A signed binary value of –3 is converted to –3.0.
ER: Indirectly addressed EM/DM word is non-existent.
(Content of *EM/*DM word is not BCD, or the EM/DM area boundary
has been exceeded.)
EQ: ON if both the exponent and mantissa of the result are 0.
Operand Data Areas
IR, SR, AR, DM, EM, HR, TIM/CNT, LR, #
S
R
IR, SR, AR, DM, EM, HR, LR
000
Third operand: Always 000
Signed binary data (16 bits)
S
Floating-point data (32 bits)
R
Section 5-24
S: Source word
R: First result word
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