6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
165
6
Subtracting 16-bit binary data
-(P)(_U) instruction and SUB(P)(_U) instruction can be used for subtraction of 16-bit binary data.
-(P)(_U) [using two operands]
These instructions subtract the 16-bit binary data in the device specified by (d) and the 16-bit binary data in the device
specified by (s), and store the result in the device specified by (d).
■Descriptions, ranges, and data types
■Applicable devices
• These instructions subtract the 16-bit binary data in the device specified by (d) and the 16-bit binary data in the device
specified by (s), and store the subtraction result in the device specified by (d).
• When underflow or overflow occurs in the operation result, the following processing is executed. In this case, the carry flag
(SM700, SM8022) does not turn ON.
There is no operation error.
Ladder diagram Structured text
Not supported
Operand Description Range Data type Data type (label)
(s) -(P) Subtrahend data or the device where the data
to be subtracted from another is stored
-32768 to +32767 16-bit signed binary ANY16_S
-(P)_U 0 to 65535 16-bit unsigned binary ANY16_U
(d) -(P) Device where the data from which another is to
be subtracted is stored
-32768 to +32767 16-bit signed binary ANY16_S
-(P)_U 0 to 65535 16-bit unsigned binary ANY16_U
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB
U\G T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U\G Z LC LZ K, H E $
(s)
(d)
b15 b0
5678 (BIN)
(d) (s) (d)
1234 (BIN) 4444 (BIN)
-
···
b15 b0
···
b15 b0
···
-
-
-
- →
→
→
K0 K65535 K1
(0000H) (FFFFH) (0001H)
→
K32767 K-2 K-32767
K0 K1 K65535
K32768 K2 K32766
(0000H) (0001H) (FFFFH)
(8000H) (0002H) (7FFEH)
(FFFEH) (8001H)(7FFFH)
In case of -(P)
Because the highest bit is 1, the value is negative.
In case of -(P)(_U)
Because the highest bit is 0, the value is positive.
To Next Page
Loading...
Need help?
General
