Delta AH500 Programming Manual page 238

AH 5 00 Pr ogr am m ing Ma n ua l
API Instruction code
0065 CHKADR
Device X Y M
S
 
n
  
D
Symbol:
Explanation:
1. The instruction CHKADR is used to check whether the value in S and (the value in S)+n-1
exceed the device range. If the check result is that the value in S and (the value in S)+n-1 do
not exceed the device range, the device D will be ON. Otherwise, it will be OFF.
2. S supports the pointer registers PR, TR, CR, and HCR.
3. The operand n should be within the range between 1 and 1024.
4. The instruction CHKADR only can be used in the function block.
Example:
1. Establish a program and a function block in ISPSoft.
Declare two variables in the program.
2. Declare VarPR1, VarTR1, VarCR1, and VarHCR1 in the function block, and assign the data
types POINTER, T_POINTER, C_POINTER, and HC_POINTER to them respectively.
Operand
S, n, D
S T C HC D
  
 
Pulse instruction 16-bit instruction (7 steps) 32-bit instruction
S ： Pointer register
n ： Number of devices
D ： Check result
Checking the address of the contact
type of pointer register
L SM SR E
  
 
－
AH500
POINTER/T_POINTER/
C_POINTER/HC_POINTER
Word
Bit
Function
PR K 16# "$" DF

  

－
6 - 3 3