Classification
OTL Syntax
/// Local Declarations
Boolean BooleanVariable = false;
/// Flow
BooleanVariable = QuantityTerm1 ==| !=| >| >=| <| <= QuantityTerm2;
Description
- When Quantity values are compared using relational operators, an OTX runtime shall use the quantities' normalized values for comparison. So if e.g. a Quantity of 8 kilometers is to be compared with a Quantity of 10 miles, the runtime system shall convert both values into meters before doing the comparison.
- Furthermore, the physical dimensions of the display unit of the Quantity values being compared shall be identical – e.g. it is allowed to compare distances with each other, but it is illegal to compare a distance to a time – in that case an InvalidConversionException shall be thrown.
- If scalar operands exist, they shall be interpreted as normalized values according to the physical dimension of the Quantity operands. This allows e.g. the comparison of 2 km < 11 which will result in false (because the comparison is equivalent to comparing 2 km < 11m).
Return Value
The Term returns the value, see table below.
|
|
In OTX, Terms are categorized according to its return data type!
|
| Data Type |
Description
|
| Boolean |
The result of the comparision of the numerical quantities
|
Properties
| Name |
Data Type |
Class |
Default |
Cardinality |
Description
|
| QuantityTerm1 |
Quantity |
Term |
- |
[1] |
NumericQuantity operand to be compared
|
| QuantityTerm2 |
Quantity |
Term |
- |
[1] |
NumericQuantity operand to be compared
|
OTL Examples
/// Local Declarations
Boolean Boolean1 = false;
/// Flow
Boolean1 = 8 [@Unit, "BL_DataLibraMIB.odx", "km"] != 10 [@Unit, "BL_DataLibraMIB.odx", "mile"];
See also
Addition
Subtraction
Multiplication
Division
Modulo
Absolute Value
Negation
