Dec: Decrement Integer Instruction; Vabs: Integer Absolute Value Instruction; Neg: Negative Integer Instruction - INVT IVC2H Programming Manual

Programming manual of IVC series small PLC
6.3.7

DEC: Decrement integer instruction

LAD:
IL: DEC (D)
Operand Type
D INT
Operand description
D: destination operand
Function description
When the power flow is valid, D
decreases 1.
6.3.8

VABS: Integer absolute value instruction

LAD:
IL: VABS (S) (D)
Operand Type
S INT Constant
D INT
Operand description
S: source operand
D: destination operand
Function description
When the power flow is valid, get the
absolute value of S and assign it to D.
6.3.9

NEG: Negative integer instruction

LAD:
IL: NEG (S) (D)
Operand Type
S INT Constant
D INT
Operand description
S: source operand
D: destination operand
Function description
When the power flow is valid, get the
negative value of S and assign the
result to D.
KnY KnM KnS
Note
This instruction is a cyclic decrease instruction, with the range of -32768~32767.
Example
When X0 is ON, D0 (1000) decreases 1. After the execution, D0=999.
KnX KnY KnM KnS
KnY KnM KnS
Note
The range of S shall be -32767~32767. When S is -32768, the system will report
operand error, and the instruction will not be executed.
Example
When X0 is ON, get the absolute value of D0 (-1000), and assign the result to D10.
D10=1000.
KnX KnY KnM KnS
KnY KnM KnS
Note
The range of S shall be -32767~32767. When S is -32768, the system will report
operand error, and the instruction will not be executed.
Example
When X0 is ON, get the negative value of D0 (1000) and assign the result to D10.
D10=-1000.
Chapter 6 Application instructions
Applicable to
Influenced flag bit
Program steps
Applicable elements
KnLM D
Applicable to
Influenced flag bit
Program steps
Applicable elements
KnLM KnSM D SD
KnLM D
Applicable to
Influenced flag bit
Program steps
Applicable elements
KnLM KnSM D SD
KnLM D
IVC1 IVC1S IVC1L IVC2L IVC2H
3
C T V Z R
LD X0
DEC D0
IVC1 IVC1S IVC1L IVC2L IVC2H
Zero, carry, borrow
5
C T V Z R
C T V Z R
LD X0
VABS D0 D10
IVC1 IVC1S IVC1L IVC2L IVC2H
Zero, carry, borrow
5
C T V Z R
C T V Z R
LD X0
NEG D0 D10
86
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