Chapter 6 Applied Instructions
6-241
API
Instruction code Operand Function
1103 WSFL P
S, D, n
1
, n
2
Shifting the data in the word
devices to the left
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
16-bit instruction (9 steps)
AH500 AH500 -
Symbol:
S
：
Initial device in which the value is shifted Word
D
：
Initial device in which the value is shifted Word
n
1
：
Length of the data which is shifted Word
n
2
：
Number of bits forming a group Word
Explanation:
1. The data in the n
1
word devices starting from D is divided into groups (n
2
words as a group),
and these groups are shifted to the left. The data in the n
2
word devices starting from S are
shifted to the devices starting from D to fill the vacancy.
2. Generally, the pulse instruction WSFLP is used.
3. The operand n
1
should be within the range between 1 and 512. The operand n
2
should be
within the range between 1 and n
1
.
Example 1:
1. When X0.0 is switched from OFF to ON, the data in the sixteen word devices starting from D20
is divided into groups (four words as a group), and these groups are shifted to the left.
2. The shift of the data in the word devices to the left during a scan is illustrated as follows.
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