QModbusRtuSerialMaster Class
The QModbusRtuSerialMaster class represents a Modbus client that uses a serial bus for its communication with the Modbus server. More...
| Header: | #include <QModbusRtuSerialMaster> |
| qmake: | QT += serialbus |
| Since: | Qt 5.8 |
| Inherits: | QModbusClient |
Public Functions
| QModbusRtuSerialMaster(QObject *parent = nullptr) | |
| int | interFrameDelay() const |
| void | setInterFrameDelay(int microseconds) |
- 8 public functions inherited from QModbusClient
- 7 public functions inherited from QModbusDevice
- 34 public functions inherited from QObject
Reimplemented Protected Functions
- 2 protected functions inherited from QModbusClient
- 4 protected functions inherited from QModbusDevice
- 9 protected functions inherited from QObject
Additional Inherited Members
- 1 property inherited from QModbusClient
- 1 property inherited from QObject
- 1 public slot inherited from QObject
- 1 signal inherited from QModbusClient
- 2 signals inherited from QModbusDevice
- 2 signals inherited from QObject
- 1 public variable inherited from QObject
- 10 static public members inherited from QObject
- 2 protected functions inherited from QModbusClient
- 4 protected functions inherited from QModbusDevice
- 9 protected functions inherited from QObject
- 2 protected variables inherited from QObject
Detailed Description
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.
Member Function Documentation
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.
See also 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.
See also interFrameDelay().