Delta AS Series Programming Manual page 352

API Instruction code
0116 D DEC
Device X Y M

D
Data
type

D
Symbol
Explanation
1. This instruction subtracts 1 from the value in D.
2. Only the DDEC instruction can use the 32-bit counter.
3. For the 16-bit operation, -32,768 minus 1 leaves 32,767. For the 32-bit operation, -2,147,483,648 minus 1 leaves
2,147,483,647.
Example
When X0.0 switches from OFF to ON, the value in D0 decreases by one.
Operand
D
P
S T C HC
  
 
Pulse instruction
： Destination device
D
Ch a pt er 6 A pp l i e d I n s tr uc t io ns
Subtracting one from a binary number
D FR SM SR
 

16-bit instruction
AS AS
Function
E K 16# "$"

 
32-bit instruction
AS
6 - 7 3
F
6_