Delta Electronics DVP15MC11T User Manual

Chapter 8 Logic Instructions
8_
 Function Explanation
SHL is used to shift all bits of the value of In by the number of bits specified by Num to the left and the
result is output to Out.
When Num=2, all bits of the value of In are shifted by two bits to the left and the values of Bit0~Bit1 are
supplemented with 0 and Bit6~Bit7 are discarded as shown in the following figure.
 Precautions for Correct Use

The input variables are not allowed to omit. An error will occur during the compiling of the software if
any input variable is omitted. But the output variable is allowed to omit.

The value of Out is the same as In when the value of Num is 0.

Programming Example

The data types of SHL_In and SHL_Num are UINT and USINT respectively and their values are 300
and 3 respectively. The data type of Out1 is BYTE and the value of Out1 is 2400 when SHL_EN is
TRUE.
 The variable table and program
Variable name
Data type
Current value
SHL_EN
BOOL
TRUE
SHL_In
UINT
300
SHL_Num
USINT
3
Out1
UINT
2400
 Illustration of the example
1
0
1
0
1
1
0
1
0
0
1
0
10
1
1
Bit0Bit7
In
Out
Discarded
fill 0
Num=2, shifted by two bits toward the left
1
SHL
EN ENO
In Out
SHL_EN
SHL_In Out1
Num
SHL_Num
0
1
0
11
0 00
0
Bit0Bit15
SHL_In
Out1
3 bits discarded
0 for 3 supplementary
bits
SHL_Num=3,
shifted by three bits left
1
0000000
0001011 0 00 10000
Bit0Bit15
8-125

Delta Electronics DVP15MC11T Specifications

General

Brand	Delta Electronics
Model	DVP15MC11T
Category	Controller
Language	English