Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 518

Operation error
Error code Description
(SD0/SD8067)
The specified device value is -0, denormalized number, NaN (not a number), or .
3402H
For the angleradian conversion, refer to the DRAD(P) and DDEG(P) instructions.
(Page 527 Converting single-precision real number angle to radian, Page 529 Converting single-precision
real number radian to angle)
8 APPLICATION INSTRUCTION
516
8.9 Real Number Instruction