Delta AH500 - Page 219

Chapter 6 Applied Instructions
6-14
API Instruction code Operand
Function
0030~
0035
D
FOR※ S
1
, S
2
Comparing the floating-point
numbers
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
S
1
          
S
2
          
Pulse instruction 32-bit instruction (5-7 steps) 64-bit instruction (5-7 steps)
-
AH500
AH500
Symbol:
Taking FOR= and DFOR= for example
S
1
：
Data source 1 Double word/Long word
S
2
：
Data source 2 Double word/Long word
Explanation:
1. The instructions are used to compare the value in S
1
with that in S
2
, and the values
compared are floating-point numbers. Take the instruction FOR= for example. When the
comparison result is that the value in S
1
is equal to that in S
2
, the condition of the instruction
is met. When the comparison result is that the value in S
1
is not equal to that in S
2
, the
condition of the instruction is not met.
API
number
32-bit
instruction
64-bit
instruction
Comparison operation result
ON
OFF
0030
FOR＝ DFOR＝ S
1
＝S
2
S
1
≠S
2
0031
FOR＜＞ DFOR＜＞
S
1
≠S
2
S
1
＝S
2
0032
FOR＞ DFOR＞ S
1
＞S
2
S
1
≦S
2
0033
FOR＞＝ DFOR＞＝ S
1
≧S
2
S
1
＜S
2
0034
FOR＜ DFOR＜ S
1
＜S
2
S
1
≧S
2
0035
FOR＜＝ DFOR＜＝ S
1
≦S
2
S
1
＞S
2
Example:
When X1.0 is ON, or when the value in D1 is equal to that in D2, Y1.0 is ON.