Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 67

Processing details
• These instructions add the 32-bit binary data in the device specified by (s1) and the 32-bit binary data in the device
specified by (s2), and store the operation result in the device specified by (d).
(s1)
(s1)+1 (s2)+1
b31 b16 b15 b31 b16 b15
··· ··· b0 ···
123456 (BIN)
567890 (BIN) +
• If an overflow occurs in the result, the carry bit is ignored. In this case, SM700 does not turn on.
[D+ instruction]
(s1)+1 (s1) (s2)+1
b31 b16 b15 b0 b31
··· ··· ···
1234567890 (BIN) + 987654321 (BIN)
(s1)+1 (s1) (s2)+1
b31 b16 b15 b0 b31
··· ··· ···
-1234567890 (BIN) + -987654321 (BIN)
[D+_U instruction]
(s1)+1 (s1) (s2)+1
b31 b16 b15 b0 b31 b16 b15
··· ··· ···
3456789012 (BIN) + 1234567890 (BIN)
Operation error
There is no operation error.
(s2) (d)
(d)+1
b31 b16 b15
··· b0 ··· ···
691346 (BIN)
(s2) (d)+1 (d)
b16 b15 b0 b31 b16 b15
··· ···
-2072745085 (BIN)
(s2) (d)+1 (d)
b16 b15 b0 b31 b16 b15
··· ···
2072745085 (BIN)
(s2) (d)+1 (d)
b0 b31 b16 b15
··· ··· ···
396389606 (BIN)
b0
b0
···
b0
···
b0
6 BASIC INSTRUCTIONS
6.1 Arithmetic Operation Instructions
6
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