Details
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Bug
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Resolution: Invalid
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P1: Critical
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5.9.1, 5.9.2, 5.11.1
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None
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Windows 7 x64
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13
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Qt6_Foundation_Sprint 30
Description
If my modbus thread is running and the QModbusRtuSerialMaster-Class is connected everything works fine until I start with resizing my MainWindow or if something changes at the USB-Port (e.g. connecting a USB-Stick). If I use my Program with QModbusTcpClient-Class everything works fine during resizing and connecting USB-Stick. The following debug-Messages are thrown with QModbusRtuSerialMaster. See Modbus-Logging below.
In errorString of QModbusRtuSerialMaster there is the String "Resource Error"
Sometimes the following error messages appear.
I initialize my serial modbus interface with the following code in a class which inherits from QThread:
void BModbus::connectSerialDevice(QString portname, qint32 baud, qint16 parity, qint16 databits, quint16 stopbits, quint8 address, float interval) { client = new QModbusRtuSerialMaster(this); client->setTimeout(100); client->setNumberOfRetries(3); client->setConnectionParameter(QModbusDevice::SerialPortNameParameter, portname); client->setConnectionParameter(QModbusDevice::SerialBaudRateParameter, baud); client->setConnectionParameter(QModbusDevice::SerialParityParameter, parity); client->setConnectionParameter(QModbusDevice::SerialDataBitsParameter, databits); client->setConnectionParameter(QModbusDevice::SerialStopBitsParameter, stopbits); modbusAddress = address; this->interval = interval; connect(client,&QModbusClient::errorOccurred,this,&BModbus::errorOccured); connect(client,&QModbusClient::stateChanged,this,&BModbus::stateChanged); connect(this,&BModbus::readRequestSignal,this,&BModbus::readRequestSlot); client->connectDevice(); }
the initialization of the network modbus Interface which works looks like this:
void BModbus::connectNetworkDevice(QString ip, quint16 port, float interval) { client = new QModbusTcpClient(this); client->setTimeout(100); client->setNumberOfRetries(3); client->setConnectionParameter(QModbusDevice::NetworkAddressParameter, ip); client->setConnectionParameter(QModbusDevice::NetworkPortParameter, port); modbusAddress = 255; this->interval = interval; connect(client,&QModbusClient::errorOccurred,this,&BModbus::errorOccured); connect(client,&QModbusClient::stateChanged,this,&BModbus::stateChanged); connect(this,&BModbus::readRequestSignal,this,&BModbus::readRequestSlot); client->connectDevice(); }
The above described error also happens in release mode.
The modbus logging prints the following
QModbusDevice::State(ConnectingState) QStatusBar::removeWidget(): Widget not found. QModbusDevice::State(ConnectedState) Modbus-Thread running qt.modbus: (RTU client) Sent Serial PDU: 0x0300060002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x010300060002240a qt.modbus: (RTU client) Send successful: 0x0300060002 qt.modbus.lowlevel: (RTU client) Response buffer: "01030441dcab19910f" qt.modbus: (RTU client) Received ADU: "01030441dcab19910f" qt.modbus: (RTU client) Sent Serial PDU: 0x0300080002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x01030008000245c9 qt.modbus: (RTU client) Send successful: 0x0300080002 qt.modbus.lowlevel: (RTU client) Response buffer: "01030441dfd1fe0225" qt.modbus: (RTU client) Received ADU: "01030441dfd1fe0225" qt.modbus: (RTU client) Sent Serial PDU: 0x03000a0002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x0103000a0002e409 qt.modbus: (RTU client) Send successful: 0x03000a0002 qt.modbus.lowlevel: (RTU client) Response buffer: "01030441df4733ac10" qt.modbus: (RTU client) Received ADU: "01030441df4733ac10" qt.modbus: (RTU client) Sent Serial PDU: 0x03000c0002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x0103000c00020408 qt.modbus: (RTU client) Send successful: 0x03000c0002 qt.modbus.lowlevel: (RTU client) Response buffer: "01030441dfcdb88b17" qt.modbus: (RTU client) Received ADU: "01030441dfcdb88b17" qt.modbus: (RTU client) Sent Serial PDU: 0x0300060002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x010300060002240a qt.modbus: (RTU client) Send failed: 0x0300060002 qt.modbus: (RTU server) QSerialPort error: QSerialPort::SerialPortError(ResourceError) "Der E/A-Vorgang wurde wegen eines Threadendes oder einer Anwendungsanforderung abgebrochen." QModbusDevice::State(ClosingState) QModbusDevice::State(UnconnectedState) QIODevice::write (QSerialPort): device not open qt.modbus: (RTU client) Sent Serial PDU: 0x0300060002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x010300060002240a qt.modbus: (RTU client) Send failed: 0x0300060002 qt.modbus: (RTU server) QSerialPort error: QSerialPort::SerialPortError(NotOpenError) "Device is not open" bool __cdecl QSerialPort::clear(class QFlags<enum QSerialPort::Direction>): device not open QIODevice::write (QSerialPort): device not open qt.modbus: (RTU client) Sent Serial PDU: 0x0300060002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x010300060002240a qt.modbus: (RTU client) Send failed: 0x0300060002 qt.modbus: (RTU server) QSerialPort error: QSerialPort::SerialPortError(NotOpenError) "Device is not open" bool __cdecl QSerialPort::clear(class QFlags<enum QSerialPort::Direction>): device not open QIODevice::write (QSerialPort): device not open qt.modbus: (RTU client) Sent Serial PDU: 0x0300060002 qt.modbus.lowlevel: (RTU client) Sent Serial ADU: 0x010300060002240a qt.modbus: (RTU client) Send failed: 0x0300060002 Modbus-Error QModbusDevice::Error(TimeoutError) "Cannot open serial device." qt.modbus: (RTU server) QSerialPort error: QSerialPort::SerialPortError(NotOpenError) "Device is not open" bool __cdecl QSerialPort::clear(class QFlags<enum QSerialPort::Direction>): device not open Modbus-Thread finished Modbus-Error QModbusDevice::Error(ConnectionError) "Cannot open serial device."
