Delta Electronics DVP15MC11T User Manual

Chapter 8 Logic Instructions
8_

Users can choose different data types for the input parameter in this instruction. But the data type of
the output parameter is restricted to LREAL. An error will occur during the compiling of the software
if the data type of the output parameter is not LREAL.
 Precautions for Correct Use

The input variable is not allowed to omit. An error will occur during the compiling of the software if
the input variable is omitted. But the output variable is allowed to omit.

The output value of Out is nonnumeric when the input value of In is a non-positive number as shown
in the following table.
The variable table and program
Variable name
Data type
Current value
LN_EN
BOOL
TRUE
LN_In
REAL
-2.0
Out1
LREAL
1.#QNAN
1
LN
EN ENO
In Out
LN_EN
LN_In Out1
 Programming Example

The data types of variables LN_In and Out1 are INT and LREAL respectively. The value of Out1 is
0.0 if the value of LN_In is 1 when LN_EN changes to TRUE. The value of Out1 is
1.00000005734143 as LN_In is 2.718282.
 Variable 1
Variable name
Data type
Current value
LN_EN
BOOL
TRUE
LN_In
INT
1
Out1
LREAL
0.0
 Variable 2
Variable name
Data type
Current value
LN_EN
BOOL
TRUE
LN_In
REAL
2.718282
Out1
LREAL
1.00000005734143
 The program
1
LN
EN ENO
In Out
LN_EN
LN_In Out1
8-93

Delta Electronics DVP15MC11T Specifications

General

Brand	Delta Electronics
Model	DVP15MC11T
Category	Controller
Language	English