QModbusRtuSerialClient Class▲
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Header: QModbusRtuSerialClient
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Since: Qt 6.2
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CMake:
find_package(Qt6 REQUIRED COMPONENTS SerialBus)
target_link_libraries(mytarget PRIVATE Qt6::SerialBus)
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qmake: QT += serialbus
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Inherits: QModbusClient
Detailed Description▲
Communication via Modbus requires the interaction between a single Modbus client instance and multiple Modbus servers. This class provides the client implementation via a serial port.
Member Function Documentation▲
[explicit] QModbusRtuSerialClient::QModbusRtuSerialClient(QObject *parent = nullptr)▲
Constructs a serial Modbus client with the specified parent.
[override virtual protected] void QModbusRtuSerialClient::close()▲
Reimplements: QModbusDevice::close().
int QModbusRtuSerialClient::interFrameDelay() const▲
Returns the amount of microseconds for the silent interval between two consecutive Modbus messages.
See Also▲
See also setInterFrameDelay()
[override virtual protected] bool QModbusRtuSerialClient::open()▲
Reimplements: QModbusDevice::open().
When calling this function, existing buffered data is removed from the serial port.
void QModbusRtuSerialClient::setInterFrameDelay(int microseconds)▲
Sets the amount of microseconds for the silent interval between two consecutive Modbus messages. By default, the class implementation will use a pre-calculated value according to the Modbus specification. A active or running connection is not affected by such delay changes.
If microseconds is set to -1 or microseconds is less than the pre-calculated delay then this pre-calculated value is used as frame delay.
See Also▲
See also interFrameDelay()
[since 5.13] void QModbusRtuSerialClient::setTurnaroundDelay(int turnaroundDelay)▲
Sets the amount of milliseconds for the silent interval between a Modbus broadcast and a consecutive Modbus messages to turnaroundDelay. Typically the turnaround delay is in the range of 100 to 200 milliseconds.
This function was introduced in Qt 5.13.
See Also▲
See also turnaroundDelay()
[since 5.13] int QModbusRtuSerialClient::turnaroundDelay() const▲
Returns the amount of milliseconds for the silent interval between a Modbus broadcast and a consecutive Modbus messages. The default value is set to 100 milliseconds.
This function was introduced in Qt 5.13.
See Also▲
See also setTurnaroundDelay()