Mitsubishi Electric MELSEC iQ-R Series - Page 836

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7 APPLICATION INSTRUCTIONS
7.9 Real Number Instructions
Processing details
• These instructions raises the double-precision real number specified by (s1) to the power of the double-precision real
number specified by (s2), and store the operation result in the device specified by (d).
• The values that can be specified by (s1) and (s2) and the value that can be stored are 0, 2
-1022
|setting value (stored
value)|<2
1024
.
• If the operation result is -0 or an underflow occurs, the operation result turns out to 0.
• When an input value is set using the engineering tool, a rounding error may occur. Refer to the following for the precautions
on setting input values using the engineering tool.
Page 49 Precautions
Operation error
Error code
(SD0)
Description
3402H The value input to (s1) or (s2) is -0, a subnormal number, NaN (not a number), or .
(s2)+3 (s2)+2 (s2)+1 (s2)
(s1)+3 (s1)+2 (s1)+1 (s1)
(s1)+3 (s1)+2 (s1)+1 (s1)
(d)+3 (d)+2 (d)+1 (d)
Double-precision real number
Double-precision real number
Base number
Exponent
to the th power
(s2)+3 (s2)+2 (s2)+1 (s2)