Delta DVP-15MC Series User Manual

Chapter 8 Logic Instructions
8-31
8_
Comparison Instructions
FB/FC
Explanation
Applicable model
FC
LT is used for a less-than comparison of two or more variables or constants.
DVP15MC11T
DVP15MC11T-06
 Parameters
Parameter
name
Meaning
Input/
Output
Description Valid range
In1 to InN
Comparison
data
Input
The number of comparison data can be
increased or decreased through the
programming software. Maximum: 8.
Minimum: 2. That is N=2~8.
Depends on the data type
of the variable that the
input parameter is
connected to.
Out
Comparison
result
Output Comparison result
Depends on the data type
of the variable that the
output parameter is
connected to.
Boolean
Bit string Integer
Real
number
Time, date
String
BOOL BYTE WORD
DWORD
LWORD
USINT
UINT UDINT ULINT SINT INT DINT LINT REAL
LREAL
TIME
DATE
TOD
DT
STRING
In1
to
InN
● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Out
●
Note:
The symbol ● indicates that the parameter is allowed to connect to the variable or constant of the data
type.
 Function Explanation
 LT is used for a less-than comparison of two or more variables or constants. if In1<In2<…<InN, Out
is TRUE. Otherwise, Out is FALSE.
 The input parameters In1~InN are allowed to be the variables of different data types in this
instruction when the data types of input variables are not BOOL, TIME, DATE, TOD and STRING.
When the data type of one input variable is one of BOOL, TIME, DATE, TOD and STRING, input
parameters In1~InN are all required to be of the data type. For example, if the data type of In1 is
TIME, the data type of In2~InN must be TIME. Otherwise, an error will occur in the compiling of the
software.
LT
EN ENO
In1 Out
InN
.
.
.
.
..

Delta DVP-15MC Series Specifications

General

Brand	Delta
Model	DVP-15MC Series
Category	Controller
Language	English