Panasonic FP-E Programming Manual page 958

High−level Instructions
Specifying the integer device with [D], the real numbers are automatically converted into integer data.
R0
F315 COS, DT 0, % DT 4
When the constant K is specified in S, the operations are the same as when a integer device is specified.
Program example
The "f0.7071068" is stored to DT20 and DT21 when the R0 turns on.
Radians of 45 °
R0
F315 COS, f0.7853981, DT20
Precautions during programming
The accuracy of the calculation decreases as the absolute value of the angle data specified in S and S+1
increases. We recommend that angle data be set within the following range:
−2π (radians) [S+1, S]
For FP0, this instruction F315 (COS) 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.
・= flag (R900B):
3 − 694
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2π (radians)
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 S+1 and S.
− If result of processing is outside integer range when integer device is
specified in D+1 and D.
− Absolute value of S+1 and S is 52707176 or greater.
Turns on when result of processing is recognized as "0."