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9 Applied Instructions (Arithmetic and Logical Operation)
9.2 SUBP / Subtraction
171
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
1
Outline
2
Instruction List
3
Configuration of
Instruction
4
How to Read
Explanation of
Instructions
5
Basic Instruction
6
Step Ladder
Instructions
7
Applied Instructions
(Program Flow)
8
Applied Instructions
(Move and
Compare)
9
Applied Instructions
(Arithmetic and
Logical Operation)
10
Applied Instructions
(Rotation and
Shift Operation)
9.2 SUBP / Subtraction
Outline
This instruction executes subtraction using two values to obtain the result (A -B = C).
→ For the floating point subtraction instruction [DESUB], refer to Section 18.9.
1. Format and operation, execution form
2. Set data
3. Applicable devices
S: Refer to "Cautions".
FX3U(C) FX3G(C) FX3S FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD ST
- 16 bits Continuous
Use application functions (SUB(_E)) for 16-bit operation and continuous execution.
For details, refer to the following manual.
→ FX Structured Programming Manual [Application Functions]
SUBP 16 bits Pulse SUBP(EN,s1,s2,d);
DSUB 32 bits Continuous DSUB(EN,s1,s2,d);
DSUBP 32 bits Pulse DSUBP(EN,s1,s2,d);
Variable Description
Data type
16-bit
operation
32-bit
operation
Input
variable
EN Execution condition Bit
Data for subtraction or word device storing data ANY16 ANY32
Data for subtraction or word device storing data ANY16 ANY32
Output
variable
ENO Execution state Bit
Word device storing the subtraction result ANY16 ANY32
Operand
type
Bit Devices Word Devices Others
System User Digit Specification
System
User
Special
Unit
Index
Constant
Real
Number
Character
String
Pointer
XYMTCS
D.b
KnX KnY KnM KnS T C D R
U\G
V Z Modifier K H E
""
P
zzzzzzz
S1 S2
zz z z z
zzzzzzz
S1 S2
zz z z z
zzzzzz
S1 S2
zz z
SUBP
EN
s1
s2
ENO
d
DSUB
EN
s1
s2
ENO
d
DSUBP
EN
s1
s2
ENO
d