Delta Electronics AH500, Manual

Page: 168 / 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
5 - 5 3
API Instruction code Operand Function
35 SFTL P
S, D, n
1
, n
2
Moving the states of bit
devices leftwards
Device X Y M S K 16# F KnM KnS D W T C V Z
S
   
D
  
n
1
 
n
2
 
Pulse instruction 16-bit instruction (9 steps) 32-bit instruction
 
–
E xp la nat io n

The states of the n
1
bit devices starting from D are divided into groups
( n
2
bits as a group), and these groups are moved leftwards. The states of
the n
2
bit devices starting from S are moved to the vacant devices in the
devices starting from D .

S : Initial bit device which is moved; D : Initial bit device which is moved;
n
1
: Number of bits which are moved; n
2
: Number of bits forming a group

Generally, the pulse instruction SFTRP is used.

1
≤
n
2
≤
n
1
≤
1024
E xa mple

When X0.0 is turned from OFF to ON, the states of the sixteen bit
devices starting from M0 are divided into groups (four bits as a group),
and these groups are moved leftwards.

The states of the bit devices are moved leftwards in the order

~

during a scan cycle.

M15~M12

The states of M3~M0 are carried.

M11~M8

M15~M12

M7~M4

M11~M8

M3~M0

M7~M4

X0.3~X0.0

M3~M0
X0.0
S FT L X 0.0 M 0 K 16 K 4
F our bits as a group ar e moved leftw ards.
1 2 3
M1 5 M1 4 M1 3 M1 2 M11 M1 0 M9 M8 M7
X 0.3 X 0.2 X 0.1 X 0.0
4
5
M6 M5 M4 M3 M2 M1 M0
T hey are carr ied.