QKnx2ByteSignedValue Class

The QKnx2ByteSignedValue class is a datapoint type with a 2-byte signed value. More...

Header: #include <QKnx2ByteSignedValue>
qmake: QT += knx
Inherits: QKnxFixedSizeDatapointType

Public Functions

QKnx2ByteSignedValue()
QKnx2ByteSignedValue(double value)
bool setValue(double value)
double value() const

Reimplemented Public Functions

virtual bool isValid() const override

Protected Functions

QKnx2ByteSignedValue(int subType, double value)

Additional Inherited Members

Detailed Description

The QKnx2ByteSignedValue class is a datapoint type with a 2-byte signed value.

This is a fixed size datapoint type with the length of 2 bytes.

It is a base class for the following classes:

  • QKnxDeltaTime10Msec - Time lag in multiples of 10 milliseconds. Not allowed for runtime communication. This datapoint type shall only be used for parameters and diagnostic data or if specified as such in a functional block specification.
  • QKnxDeltaTime100Msec - Time lag in multiples of 100 milliseconds. Not allowed for runtime communication.
  • QKnxDeltaTimeHrs - Time lag in hours
  • QKnxDeltaTimeMin - Time lag in minutes. Not allowed for runtime communication.
  • QKnxDeltaTimeMsec - Time lag in milliseconds
  • QKnxDeltaTimeSec - Time lag in seconds
  • QKnxPercentV16 - Percentage difference
  • QKnxRotationAngle - Rotation angle in degrees
  • QKnxValue2Count - Pulse difference

Integer values from -32 768 to 32 767 can be encoded in this datapoint type.

See also QKnxDatapointType and Qt KNX Datapoint Type Classes.

Member Function Documentation

QKnx2ByteSignedValue::QKnx2ByteSignedValue()

Creates a fixed size datapoint type with the value 0.0.

QKnx2ByteSignedValue::QKnx2ByteSignedValue(double value)

Creates a fixed size datapoint type with the value value.

[protected] QKnx2ByteSignedValue::QKnx2ByteSignedValue(int subType, double value)

Creates a fixed size datapoint type with the subtype subType and value value.

[override virtual] bool QKnx2ByteSignedValue::isValid() const

Reimplemented from QKnxDatapointType::isValid().

bool QKnx2ByteSignedValue::setValue(double value)

Sets the value of the datapoint type to value.

Returns true if the value was set; otherwise returns false.

See also value().

double QKnx2ByteSignedValue::value() const

Returns the value stored in the datapoint type.

See also setValue().

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