Mitsubishi MELSEC Q Series Programming Manual page 225

–
(1) Subtracts 16-bit BIN data designated by
stores the result of the subtraction at the device designated by
(2) Values for
(3) The judgment of whether data is positive or negative is made by the most significant bit
(b15).
• 0: Positive
• 1: Negative
(4) The following will happen when an underflow or overflow is generated in an operation result:
The carry flag in this case does not go ON.
K 32768 K2
(8000 ) (0002
H
K 2
K32767
(7FFF ) (FFFE
H
Operation Error
(1) There are no operation errors associated with the +(P) or -(P) instruction.
D
b15 b0 b15
5678 (BIN)
and can be designated between
S D
Since bit 15 value is "0",
K32766
) (7FFE )
result of operation takes a positive value.
H H
Since bit 15 value is "1",
K 32767
) (8001 )
result of operation takes a negative value.
H H
from 16-bit BIN data designated by
D
S D
b0 b15
1234 (BIN) 4444 (BIN)
32768 and 32767 (BIN, 16 bits).
+(P),-(P)
and
S
.
D
b0
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