Explanation Of Comparison Instructions - Delta AS Series Programming Manual

6.1.2 Explanation of Comparison Instructions

API Instruction code
LD※
0000-0005 D
Device
X Y M
 
S
1
 
S
2
Data
type

S
1

S
2
Symbol
Taking LD= and DLD= for example
Explanation
1.
These instructions compare the values in S
result is that the value in S
comparison result is that the value in S
met.
2.
Only the 32-bit instruction can use the 32-bit counter, but not the device E.
16-bit
API number
instruction
0000 LD＝
LD＜＞
0001
0002 LD＞
LD＞＝
0003
0004 LD＜
LD＜＝
0005
Example
1.
When the value in C10 is equal to 200, Y0.10 is ON.
2.
When the value in D200 is greater than -30, Y0.11 stays ON.
3.
When the value in (C201, C200) is less than 678,493, or when M3 is ON, M50 is ON.
Operand
，S
S
1
S T C HC
  
  
 
 
Pulse instruction
： Data source 1
S
1
： Data source 1
S
2
and S . Take the LD= instruction for example. When the comparison
1 2
is equal to that in S , the continuity condition of the instruction is met. When the
1 2
is not equal to that in S
1
32-bit
instruction
DLD＝
DLD＜＞
DLD＞
DLD＞＝
DLD＜
DLD＜＝
C h a p t e r 6 Ap p l i e d I n s t r u c t i o n s
2
D FR SM SR
  
  


16-bit instruction
－
AS
, the discontinuity condition of the instruction is
2
Continuity Discontinuity
condition condition
＝S ≠S
S S
1 2 1 2
＝S
≠S
S
S
1 2 1
＞S ≦S
S S
1 2 1 2
≧S ＜S
S S
1 2 1
＜S ≧S
S S
1 2 1 2
≦S ＞S
S S
1 2 1
Function
Comparing values LD※
E K 16# "$"
  
  
 
 
32-bit instruction
AS
2
2
2
F
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