Delta Electronics AH500, Manual

Page: 178 / 547

C h a p t e r 5 A p p l i e d I n s t r u c t i o n s
API Instruction code Operand Function
44 D BON P S, D, n
Checking the state of a
bit
Device X Y M S K 16# F KnM KnS D W T C V Z
S
         
D
  
n
     
Pulse instruction 16-bit instruction (7 steps) 32-bit instruction (8 steps)
  
E xp la nat io n

The state of the n
th
bit in S is checked, and the result is stored in D .

S : Source device; D : Device in which a check result is stored; n : Bit
whose state is judged

16-bit instruction: n =0~15; 32-bit instruction: n =0~31

If KnM/KnS is used, it is suggested that M device numbers/S device
numbers should start from a number which is a multiple of 16 in the
decimal numeral system, e.g. K1M0 and K4M16 (decimal numeral
system).
E xa mple

When X0.0 is turned OFF, the state of M0 remains unchanged.

If the 15
th
bit in D0 is 1 when X0.0 is ON, M0 will be ON. If the 15
th
bit in
D0 is 0 when X0.0 is ON, M0 will be OFF.
X0.0
BON D0 M0
0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0
D0
K15
b0
M0=Off
b15
1 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0
D0
b0
M0=On
b15
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