For information about truncating fractional values or overflowing digits caused by operation results, refer to the following.
22.10.4 Notes on Operation Results
Adds the data in two word addresses, or the data in a word address and a constant. When the results of computing overflow, figures are truncated.
For information about truncating fractional values or overflowing digits caused by operation results, refer to the following. 22.10.4 Notes on Operation Results