Bin 32-Bit Addition And Subtraction Operations (D+(P), D-(P)) - Mitsubishi MELSEC QS Series Programming Manual

D+(P), D-(P)
6.2.2
BIN 32-bit addition and subtraction operations (D+(P), D–(P))
D+(P), D-(P)
When two data are set ((
( +1,
D
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.
. K 2147483647
( H7FFFFFFF)
. K 214748364 8
( H8000000 0)
6-10
6.2 Arithmetic Operation Instructions
6.2.2 BIN 32-bit addition and subtraction operations (D+(P), D–(P))
+ 1,
D D
) – ( + 1, ) ( +1,
D S S D
Command
Command
: Data for additing/subtracting or start number of the devices where the data for additing/subtracting is stored
S
(BIN 32 bits)
: Start number of the devices where the data to be added to/subtracted from is stored (BIN 32 bits)
D
Internal Devices
Set
Data
Bit Word
S
D
D +1 D
b31 b16 b15 b0
567890 (BIN)
+
and can be designated at between
S D
+K2 K 2147483647
( H00000002) ( H80000001 )
+K 2
K 214748364 6
(HFFFFFFFE) ( H7FFFFFFE)
) + ( + 1, ) ( + 1,
S S D
))
D
P
Constants
Others
K, H
––
–– ––
to 32-bit BIN data designated by
D
.
D
S +1 S D +1
b31 b16 b15 b0 b31 b16 b15
123456 (BIN) 691346 (BIN)
2147483648 and 2147483647
Since b31 is "1", the judgment is
a negative value.
Since b31 value is "0", the judgment is
a positive value.
),
D
indicates "D+ / D-".
S D
S D
, and stores the
S
D
b0