Panasonic FP-E Programming Manual page 952

High−level Instructions
Specifying the integer device with [D], the real numbers are automatically converted into integer data.
R0
F312 F*, DT 0, DT 2, % DT 4
When the constant K is specified in S1 and S2, the operations are the same as when a integer device is
specified.
Program example
The "f123.4000" is stored to DT30 and DT31 when the R0 turns on.
R0
*
F312 F , f1.234, f100, DT30
Precaution during programming
For FP, this instruction F312 (F*) cannot be programmed in the interrupt program.
Flag conditions
・Error flag (R9007):
・Error flag (R9008):
・Carry flag (R9009): Turns on for an instant when the result is overflowed.
3 − 688
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Turns on and stays on when:
Turns on for an instant when:
− The area specified using the index modifier exceeds the limit.
− If data other than real number data is specified in "S1+1 and S1" and "S2+1
and S2."
− If result of processing is outside integer range when integer device is
specified in D+1 and D.