Delta AH500 - Page 416

AH500 Programming Manual
6-248
API Instruction code Operand Function
1107 SFDEL P
S, D, n
Deleting the data from the data list
Device
X Y M S T C HC D L SM SR E PR K
16# “$” DF
S
       
D
        
n
          
Pulse instruction
16-bit instruction (7 steps)
32-bit instruction
AH500
AH500
-
Symbol:
S
：
Initial device Word
D
：
Device in which the data is stored Word
n
：
Device in which the data is deleted Word
Explanation:
1. The value in the device specified by S indicates the length of the data, and the data is in the
devices specified by S+1~S+(The value in S). When the instruction is executed, the data in the
device specified by S+n is stored in D and deleted, the data in the devices specified by
S+n+1~S+(The value in S) is shifted to the right, the data in the device specified by S+(The
value in S) is cleared to 0, and the value in the device specified by S decreases by one. When
the value in the device specified by S is equal to 0, the instruction does not process the
deleting of the data, and the zero flag SM600 is ON.
2. Generally, the pulse instruction SFDELP is used.
3. The operand n should be within the range between 1 and 32767.
Example:
Suppose the value in D0 is 9, and n is 4. When X0.0 is ON, the data in D4 is stored in D20. After the
data in D4 is deleted, the data in D5~D9 is shifted to the right, and the value in D0 decreases by
one.
D20 D9 D8 D7 D6 D5 D4 D3 D2
D1
D0
The length of the data
9
S
D
The data is deleted.
D20
D8 D7 D6 D5 D4 D3 D2
D1
D0
22
8
4712 857 123 100 111
22
48 5
799
4712 857 123 100 111
48 5
799
n=4
D9
0
The length of the data