6. BASIC INSTRUCTIONS
6
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14
MELSEC-A
(3) At (S), (S1), (S2) and (D), -2147483648 to 2147483647 (BIN 32 bits) can be
specified.
(4) The judgement of whether the datas of (S), (S1), (S2) and (D) are positive or
negative is made at the highest bit (b31).
0……. Positive
1……. Negative
(5) When the 0th bit has underflown, the carry flag does not turn on.
When the 31st bit has overflown, the carry flag does not turn on.
D-
(1) Performs the subtraction of BIN data specified at (D) and the BIN data specified
at (S), and stores the addition result into the device specified at (D).
(2) Performs the subtraction of device specified at (S1) and the device specified at
(S2), and stores the result into the device specified at (D1).
(3) At (S), (S1), (S2) and (D), -2147483648 to 2147483647 (BIN 32 bits) can be
specified.
(4) The judgement of whether the dates of (S), (S1), (S2) and (D) are positive or
negative is made at the highest bit (b31).
0……. Positive
1……. Negative
(5) When the 0th bit has underflown, the carry flag does not turn on.
(6) When the 31st bit has overflown, the carry flag does not turn on.
Содержание MELSEC-A series
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