Delta Electronics DVP15MC11T, Руководство по эксплуатации

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Chapter 8 Logic Instructions
8_

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 data type of output variables must be BOOL. Otherwise, an error will occur during the compiling
of the software.

Programming Example

The data types of LE_In1, LE_In2 and LE_In3 are INT, UINT and DINT respectively and the
data type of Out1 is BOOL.
Out1 changes to TRUE when the values of LE_In1, LE_In2 and LE_In3 are -10, 50 and 50
respectively and LE_EN changes to TRUE as shown in Variable 1.
Out1 changes to FALSE when the values of LE_In1, LE_In2 and LE_In3 are 20, 10 and 100
respectively and LE_EN changes to TRUE as shown in Variable 2.

Variable 1
Variable name Data type Current value
LE_EN BOOL TRUE
LE_In1 INT -10
LE_In2 UINT 50
LE_In3 DINT 50
Out1 BOOL TRUE

Variable 2
Variable name Data type Current value
LE_EN BOOL TRUE
LE_In1 INT 20
LE_In2 UINT 10
LE_In3 DINT 100
Out1 BOOL FALSE

The Program

The data types of LE_In1 and LE_In2 are both TIME and the data type of Out1 is BOOL.
Out1 changes to TRUE when the values of LE_In1 and LE_In2 are T#1ms and T#50ms respectively
and LE_EN is TRUE.

The variable table and program
Variable name Data type Current value
LE_EN BOOL TRUE
LE_In1 TIME T#1ms
LE_In2 TIME T#50ms
Out1 BOOL TRUE
1
LE
EN ENO
I n1 O ut
I n3
I n2
LE _EN
L E_In1
L E_In3
L E_In2
Out 1
1
LE
EN ENO
I n1 O ut
I n2
LE _EN
L E_In1
L E_In2
Out 1
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