Mitsubishi MELSEC QS Series Programming Manual page 110

D+(P), D-(P)
When three data are set ((
( + 1,
S1
D+,D
D+P, D P
Function
D+
(1) Adds 32-bit BIN data designated by
result of the addition at the device designated by
(2) The values for
(BIN 32 bits).
(3) Judgment of whether the data is positive or negative is made on the basis of the most
significant bit (b31).
• 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.
. K2147483647
(H7FFFFFFF)
. K 214748364 8
(H80000000)
6-12
6.2 Arithmetic Operation Instructions
6.2.2 BIN 32-bit addition and subtraction operations (D+(P), D–(P))
+ 1,
S1 S1
) – ( + 1, ) ( +1,
S1 S2 S2 D
Command
Command
: Data to be added to/subtracted from or start number of the devices where the data to be added to/subtracted
S1
from is stored (BIN 32 bits)
: Data for additing/subtracting or start number of the devices where the data for additing/subtracting is stored
S2
(BIN 32 bits)
: Start number of the devices where the addition/subtraction operation result will be stored (BIN 32 bits)
D
Internal Devices
Set
Data
Bit Word
S1
S2
S1
D
+1
S1 S1
b31 b16 b15 b0 b31
567890 (BIN)
+
, and can be designated at between
S1 S2 D
+K2 K 2147483647
(H00000002) (H80000001)
+K 2 K2147483646
(HFFFFFFFE) (H7FFFFFFE)
) + ( + 1, ) ( + 1,
S2 S2 D
))
D
S1
P
S1
Constants
Others
K, H
––
––
–– ––
to 32-bit BIN data designated by
S1
.
D
+1 +1
S2 S2 D
b16 b15 b0 b31 b16 b15
123456 (BIN) 691346 (BIN)
Since b31 is "1", the judgment is
a negative value.
Since b31 is "0", the judgment is
a positive value.
),
D
indicates "D+ / D-".
D
S2
D
S2
, and stores the
S2
D
b0
2147483648 and 2147483647