Delta AH500 Programming Manual page 217

API Instruction code
0018~
D FLD※
0023
Device X Y M
 
S
1
 
S
2
Symbol:
Taking FLD= and DFLD= for example
Explanation:
1. The instructions are used to compare the value in S
compared are floating-point numbers. Take the instruction FLD= for example. When the
comparison result is that the value in S
is met. When the comparison result is that the value in S
condition of the instruction is not met.
API 32-bit
number instruction
0018
FLD＝
0019
FLD＜＞
0020
FLD＞
0021 FLD＞＝
0022
FLD＜
0023
FLD＜＝
Example:
Take the instruction FLD＝ for example. When the value in D0 is equal to that in D2, Y0.0 is ON.
Additional remark:
1. If the value in S or S
1
floating-point numbers, the contact is OFF, SM is ON, and the error code in SR0 is 16#2013.
6 - 1 2
Operand
S , S
1
S T C HC D
   
   
Pulse instruction 32-bit instruction (5-7 steps) 64-bit instruction (5-7 steps)
－
： Data source 1
S
1
： Data source 2
S
2
is equal to that in S
1
64-bit
instruction
DFLD＝
DFLD＜＞
DFLD＞
DFLD＞＝
DFLD＜
DFLD＜＝
exceeds the range of values which can be represented by the
2
Ch a pt er 6 Ap p l i ed I ns t r uc t i ons
Comparing the floating-point
2
numbers
L SM SR E PR
   
   
AH500
Double word/Long word
Double word/Long word
with that in S , and the values
1 2
, the condition of the instruction
2
is not equal to that in S
1
Comparison operation result
ON
＝S
S
1 2
≠S
S
S
1 2
＞S
S
1 2
≧S
S S
1 2
＜S
S
1 2
≦S
S S
1 2
Function
K 16# "$" DF


AH500
, the
2
OFF
≠S
S
1 2
＝S
1 2
≦S
S
1 2
＜S
1 2
≧S
S
1 2
＞S
1 2