Mitsubishi Electric MELSEC iQ-R Series - Page 252

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6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
Processing details
• These instructions subtracts the 32-bit binary data in the device specified by (s2) from the 32-bit binary data in the device
specified by (s1), and store the operation result in the device specified by (d).
• If an underflow occurs in the result, the carry bit is ignored. In this case, SM700 does not turn on.
Operation error
There is no operation error.
[D-(P) instruction]
[D-(P)_U instruction]
b0
567890 (BIN)
(s1)
123456 (BIN) 444434 (BIN)
-
··· ···
(s1)+1
(s2)
(s2)+1
(d)
(d)+1
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
1234567890 (BIN)
(s1)
-987654321 (BIN) 74738564 (BIN)
-
··· ···
(s1)+1
(s2)
(s2)+1
(d)
(d)+1
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
-1234567890 (BIN)
(s1)
987654321 (BIN) -74738563 (BIN)
-
··· ···
(s1)+1
(s2)
(s2)+1
(d)
(d)+1
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
3456789012 (BIN)
-1234567890 (BIN) 396389607 (BIN)
-
··· ···
b31 b16 b15
b0
··· ···
b31 b16 b15
b0
··· ···
b31 b16 b15
(s1)
(s1)+1
(s2)
(s2)+1
(d)
(d)+1