QModbusRtuSerialMaster Class

The QModbusRtuSerialMaster class represents a Modbus client that uses a serial bus for its communication with the Modbus server. 更多...

头文件:	#include <QModbusRtuSerialMaster>
qmake:	QT += serialbus
开始支持版本:	Qt 5.6
基类:	QModbusClient

所有的成员列表, 包括继承的成员

公有函数

	QModbusRtuSerialMaster(QObject *parent = nullptr)
int	interFrameDelay() const
void	setInterFrameDelay(int microseconds)

8 个公有函数继承自 QModbusClient
7 个公有函数继承自 QModbusDevice
32 个公有函数继承自 QObject

重新实现的受保护函数

virtual void	close() override
virtual bool	open() override

2 个受保护的函数继承自 QModbusClient
4 个受保护的函数继承自 QModbusDevice
9 个受保护的函数继承自 QObject

其他继承的成员

1 个属性继承自 QModbusClient
1 个属性继承自 QObject
1 个公有槽函数继承自 QObject
1 个信号继承自 QModbusClient
2 个信号继承自 QModbusDevice
2 个信号继承自 QObject
1 个公有变量继承自 QObject
10 个静态公有成员继承自 QObject
2 个受保护的函数继承自 QModbusClient
4 个受保护的函数继承自 QModbusDevice
9 个受保护的函数继承自 QObject
2 个受保护的变量继承自 QObject

详细描述

The QModbusRtuSerialMaster class represents a Modbus client that uses a serial bus for its communication with the Modbus server.

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.

成员函数

QModbusRtuSerialMaster::QModbusRtuSerialMaster(QObject **parent* = nullptr)

Constructs a serial Modbus master with the specified parent.

`[override virtual protected]` void QModbusRtuSerialMaster::close()

Reimplemented from QModbusDevice::close().

int QModbusRtuSerialMaster::interFrameDelay() const

Returns the amount of microseconds for the silent interval between two consecutive Modbus messages.

This function was introduced in Qt 5.7.

参见 setInterFrameDelay().

`[override virtual protected]` bool QModbusRtuSerialMaster::open()

Reimplemented from QModbusDevice::open().

Note: When calling this function, existing buffered data is removed from the serial port.

void QModbusRtuSerialMaster::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.

Note: 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.