Delta AS Series Programming Manual page 270

Instruction code
NED/ANED/ONED
Device DX DY
S
1
S
2
Data type

S
1

S
2
Symbol
Explanation
1. NED/ANED/ONED correspond to LDF/ANDF/ORF. The only difference between NED/ANED/ONED and
LDF/ANDF/ORF is that you must specify the bit device S
NED/ANED/ONED is executed. Do not use the device S
execution result appears.
2. ANED connects the falling-edge detection of the contact in series.
3. ONED connects the falling-edge detection of the contact in parallel.
4. The system must scan NED/ANED/ONED to get the state of the device. Changes to the device state are not
detected until NED/ANED/ONED is scanned the next time
5. You can use NED/ANED/ONED only in function blocks.
6. The state of the operation result is automatically output after the instruction is executed. You do not need to use
input device for this.
Operand
，S
S
1 2
X Y M SM
   
 
：
NED S
1
：
ANED S
2
：
ONED Q
2
2
C ha pt er 5 Bas ic I ns t r uc t i ons
Function
Starting the falling-edge detection/Connecting the
falling-edge detection in series/Connecting the
falling-edge detection in parallel
S T
 

Specified device
For internal use
Output the state of
the operation result
in which to store the previous state of the contact when
repeatedly in the program. Otherwise, the wrong
C HC D
  

5 - 1 3
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