Delta AH500 - Page 377

Chapter 6 Applied Instructions
6-209
API Instruction code Operand Function
0809~
0811
D
LD＃
S
1
, S
2
Contact type of logical operation LD＃
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
S
1
          
S
2
          
Pulse instruction 16-bit instruction (5 steps) 32-bit instruction (5 steps)
－
AH500
AH500
Symbol:
Taking LD& and DLD& for example
S
1
：
Data source 1 Word/Double word
S
2
：
Data source 2 Word/Double word
Explanation:
1. The instruction is used to compare the data in S
1
with that in S
2
. When the comparison result is
not 0, the condition of the instruction is met. When the comparison result is 0, the condition of
the instruction is not met.
2. Only the instruction DLD＃ can use the 32-bit counter.
3. The instruction LD＃ can be connected to the mother line directly.
API No. 16-bit instruction 32-bit instruction
Comparison operation result
ON
OFF
0809
LD&
DLD&
S
1
&S
2
≠
0
S
1
&S
2
=
0
0810
LD|
DLD|
S
1
|
S
2
≠
0
S
1
|S
2
=
0
0811
LD^
DLD^
S
1
^S
2
≠
0
S
1
^S
2
=
0
4. &: Logical AND operation
5. |: Logical OR operation
6. ^: Logical exclusive OR operation
Example:
1. The logical operator AND takes the data in C0 and C1, and performs the logical AND operation
on each pair of corresponding bits. When the operation result is not 0, Y1.0 is ON.
2. The logical operator OR takes the data in D200 and D300, and performs the logical OR
operation on each pair of corresponding bits. When the operation result is not 0 and X1.0 is ON,
Y1.1 is ON.
3. The logical operator XOR takes the data in C201 and C200, and performs the logical exclusive
OR operation on each pair of corresponding bits. When the operation result is not 0, or when
X1.1 is ON, Y1.2 is ON.