Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 536

Operation error
Error code Description
(SD0/SD8067)
The specified device value is -0, denormalized number, NaN (not a number), or .
3402H
• The EXP(P) instructions execute operations in natural logarithm. For obtaining a value in common
logarithm, specify a common logarithm value divided by 0.4342945 in (s).
X
10 = e
8 APPLICATION INSTRUCTION
534
8.9 Real Number Instruction
X
0.4342945