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6-22
+(P),-(P)
6.2 Arithmetic Operation Instructions
6.2.1 BIN 16-bit addition and subtraction operations (+(P),-(P))
+(P),-(P)
When two data are set ( + , - )
Function
+
(1) Adds 16-bit BIN data designated by to 16-bit BIN data designated by and stores the
result of the addition at the device designated by .
(2) Values for and can be designated between 32768 and 32767 (BIN, 16 bits).
(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.
: Data for additing/subtracting or head number of the devices where the data for additing/subtracting is stored
(BIN 16 bits)
:
Head number of the devices where the data to be added to/subtracted from is stored (BIN 16 bits)
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn
Constants
K, H
Other
Bit Word Bit Word
––
–– ––
Basic
Process
High
performance
Redundant
Universal
D
S
D D
S
D
Command
Command
P
DS
S
D
+,
+/
+P, P
indicates an instruction symbol of .
S
S1
D
S
D
D
S
D
b0
5678 (BIN)
b15 b0
6912 (BIN)
b15b0
1234 (BIN)
b15
D
S
D
S
D
Since bit 15 value is "0",
result of operation takes a positive value.
Since bit 15 value is "1",
result of operation takes a negative value.
K32767 +K2
(7FFFH)
K 32768 +K
2
K
32767
K32766
(7FFE
H)
(8001
H)
(FFFE
H)
(8000
H)
(0002
H)