內容

• 公共函數
• 重實現公共函數
• 靜態公共成員
• 重實現保護函數
• 詳細描述

QModbusRtuSerialSlave Class

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

頭：	#include <QModbusRtuSerialSlave>
qmake:	QT += serialbus
Since:	Qt 5.8
繼承：	QModbusServer

• 所有成員列錶，包括繼承成員
• 過時成員

公共函數

	QModbusRtuSerialSlave (QObject * parent = nullptr)
virtual	~QModbusRtuSerialSlave ()

重實現公共函數

virtual bool

processesBroadcast () const override

• 10 公共函數繼承自 QModbusServer
• 7 public functions inherited from QModbusDevice
• 31 公共函數繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 9 靜態公共成員繼承自 QObject

重實現保護函數

virtual void	close () override
virtual bool	open () override
virtual QModbusResponse	processRequest (const QModbusPdu & request ) override

• 4 保護函數繼承自 QModbusServer
• 4 保護函數繼承自 QModbusDevice
• 9 保護函數繼承自 QObject

額外繼承成員

• 1 特性繼承自 QObject
• 1 公共槽繼承自 QObject
• 1 信號繼承自 QModbusServer
• 2 信號繼承自 QModbusDevice
• 2 信號繼承自 QObject
• 4 保護函數繼承自 QModbusServer
• 4 保護函數繼承自 QModbusDevice
• 9 保護函數繼承自 QObject

詳細描述

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

Communication via Modbus requires the interaction between a single Modbus client instance and multiple Modbus server. This class provides the Modbus server implementation via a serial port.

Since multiple Modbus server instances can interact with a Modbus client at the same time (using a serial bus), servers are identified by their serverAddress ().

成員函數文檔編製

QModbusRtuSerialSlave:: QModbusRtuSerialSlave ( QObject * parent = nullptr)

構造 QModbusRtuSerialSlave 采用指定 parent 。 serverAddress 預置為 1 .

[虛擬] QModbusRtuSerialSlave:: ~QModbusRtuSerialSlave ()

銷毀 QModbusRtuSerialSlave 實例。

[override virtual protected] void QModbusRtuSerialSlave:: close ()

重實現自 QModbusDevice::close ().

[override virtual protected] bool QModbusRtuSerialSlave:: open ()

重實現自 QModbusDevice::open ().

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

[override virtual protected] QModbusResponse QModbusRtuSerialSlave:: processRequest (const QModbusPdu & request )

重實現自 QModbusServer::processRequest ().

Processes the Modbus client request specified by request and returns a Modbus response.

The Modbus function QModbusRequest::EncapsulatedInterfaceTransport with MEI Type 13 (0x0D) CANopen General Reference is filtered out because it is usually Modbus TCP or Modbus serial ASCII only.

A request to the RTU serial slave will be answered with a Modbus exception response with the exception code QModbusExceptionResponse::IllegalFunction .

[override virtual] bool QModbusRtuSerialSlave:: processesBroadcast () const

重實現自 QModbusServer::processesBroadcast ().