Inovance H3U Series - Page 208

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4
4 Instructions 4.5.4 Data Rotation and Shift
SFL: 16-bit data shift left with carry by n bits
◆
Overview
The SFL instruction shifts the 16 bits of a word element to the left by n bit places.
SFL S n
16-bit data shift
left with carry by
n bits
Applicable model:
H3U
S
Word to be
shifted
Number of the element that stores the data to be
shifted
16-bit instruction (5
steps)
SFL: Continuous
execution
SFLP: Pulse
execution
n Shift times Number of shift times; value range: 0 ≤ n ≤ 15
◆
Operands
Operand
Bit Element Word Element
System·User System·User Bit Designation Indexed Address Constant
Real
Number
S X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
n X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
Note: The elements in gray background are supported.
◆
Function
The 16 bits of the word with the carry ag in the element [D] are shifted n bit places to the left.
n is a number in the range 0 to 15.
When n ≥ 16, bits are shifted by a number of bit places calculated by n%16 (remainder). For example,
when n = 20, bits are shifted four bit places (20%16 = 4) to the left.
The 1/0 state of the nth bit in [D] is written to the carry ag M8022.
The n bits starting from the lowest bit in [D] are lled with 0s.
1 1
1
1 0 0
1 1
0 0
bit0
1
0 0
1
1 1 1
bit1bit15bit14 bit13bit12 bit11bit10bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2
D
0 0
0
0 1 1
1
1
0 0
bit0
0
0
0 0 0
bit1bit15bit14 bit13bit12 bit11bit10bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2
D
0
n=8
M8022
Changed to 0
Carry flag
An error is returned in the following condition. The error ag M8067 is set to ON to identify this error and
the error code is stored in D8067.
Error 6706 is returned when n < 0.