private void btn_Poll_INstatus_Click(object sender, EventArgs e)
{
bool[] IN_status = new bool[8];
IN_status = master.ReadInputs(slave_address, 0, 8);
lbl_IN1_status.Text = IN_status[0].ToString();
lbl_IN2_status.Text = IN_status[1].ToString();
lbl_IN3_status.Text = IN_status[2].ToString();
lbl_IN4_status.Text = IN_status[3].ToString();
}
public bool[] ReadInputs(byte slaveAddress, ushort startAddress, ushort numberOfPoints)
{
if (!serialPort.IsOpen)
{
Open();
}
try
{
return(master.ReadInputs(slaveAddress, startAddress, numberOfPoints));
}
catch (Exception ex)
{
AddMessage("Catch exception in function ReadInputs(). " + ex.Message, DebugLevel.ExceptionLevel);
Close();
return(null);
}
}
public int GetData(out byte[] requestBytes, out byte[] responseBytes, out string errCode)
{
errCode = "OK";
try
{
if (_config.SelectedMemType == Memtype.Coils)
{
CoilsArray = _modbus.ReadCoils(_config.Slaves, _config.StartAddress, _config.Amount);
}
if (_config.SelectedMemType == Memtype.Inputs)
{
CoilsArray = _modbus.ReadInputs(_config.Slaves, _config.StartAddress, _config.Amount);
}
if (_config.SelectedMemType == Memtype.InputRegisters)
{
RegisterArray = _modbus.ReadInputRegisters(_config.Slaves, _config.StartAddress, _config.Amount);
}
if (_config.SelectedMemType == Memtype.HoldingRegisters)
{
RegisterArray = _modbus.ReadHoldingRegisters(_config.Slaves, _config.StartAddress, _config.Amount);
}
return(0);
}
catch (SlaveException ex)
{
errCode = ex.Message;
return(1);
}
catch (Exception ex)
{
if (ex is InvalidOperationException)
{
throw;
}
errCode = ex.Message;
return(2);
}
finally
{
requestBytes = _modbus.Transport.RequestFrame;
responseBytes = _modbus.Transport.ResponseFrame;
}
}
} //COM开口通讯是否正常的标志
/// <summary>
/// 一次读取全部电源信息
/// </summary>
/// <param name="slaveAddress">从机地址</param>
/// <param name="serialPort1">从机连接的串口号</param>
public void ReadAll(byte slaveAddress, SerialPort serialPort1)
{
try
{
//ModbusSerialMaster master = ModbusSerialMaster.CreateRtu(serialPort1);
////serialPort1.Open(); //开机就打开
//master.Transport.ReadTimeout = 300;//设置端口超时时间，单位ms
//bool[] DI = master.ReadInputs(slaveAddress, 10000, 1);//读取高压开关状态
//HVState = DI[0];
//ushort[] AI = master.ReadInputRegisters(slaveAddress, 30000, 2);//读取管电压管电流
//kVRead = (PowerSupplyType.MaxkV - PowerSupplyType.MinkV) * 1.2F * ((float)AI[0] / 4096);
//kVRead = (float)Math.Round(kVRead,2);
//mARead = (PowerSupplyType.MaxmA - PowerSupplyType.MinmA) * 1.2F * ((float)AI[1] / 4096);
//mARead= (float)Math.Round(mARead, 3);
//AI = master.ReadInputRegisters(slaveAddress, 30004, 1);//读取灯丝电流
//FilamentRead = 10 * 1.2F * (float)AI[0] / 4096;//12A对应4095
//FilamentRead= (float)Math.Round(FilamentRead, 2);
//AI = master.ReadInputRegisters(slaveAddress, 30010, 1);//读取温度
//TempRead = (PowerSupplyType.MaxTemp - PowerSupplyType.MinTemp) * (float)AI[0] / 4096;
//TempRead= (float)Math.Round(TempRead, 2);
//AI = master.ReadInputRegisters(slaveAddress, 30012, 1);//读取电源电压
////TempRead = (PowerSupplyType.MaxPowerVoltage - PowerSupplyType.MinPowerVoltage) * (float)AI[0] / 4096;
//PowerVoltageRead = 43.9F * (float)AI[0] / 4096;
//PowerVoltageRead= (float)Math.Round(PowerVoltageRead, 2);
//ComStateFlag = true;
ModbusSerialMaster master = ModbusSerialMaster.CreateRtu(serialPort1);
//serialPort1.Open(); //开机就打开
master.Transport.ReadTimeout = 300; //设置端口超时时间，单位ms
bool[] DI = master.ReadInputs(slaveAddress, 10000, 1); //读取高压开关状态
HVState = DI[0];
ushort[] AI = master.ReadInputRegisters(slaveAddress, 30000, 13); //读取管电压管电流
kVRead = (PowerSupplyType.MaxkV - PowerSupplyType.MinkV) * 1.2F * ((float)AI[0] / 4096);
kVRead = (float)Math.Round(kVRead, 2);
mARead = (PowerSupplyType.MaxmA - PowerSupplyType.MinmA) * 1.2F * ((float)AI[1] / 4096);
mARead = (float)Math.Round(mARead, 3);
//AI = master.ReadInputRegisters(slaveAddress, 30004, 1);//读取灯丝电流
FilamentRead = 10 * 1.2F * (float)AI[4] / 4096;//12A对应4095
FilamentRead = (float)Math.Round(FilamentRead, 2);
//AI = master.ReadInputRegisters(slaveAddress, 30010, 1);//读取温度
TempRead = PowerSupplyType.MinTemp + (PowerSupplyType.MaxTemp - PowerSupplyType.MinTemp) * (float)AI[10] / 4096;
TempRead = (float)Math.Round(TempRead, 2);
//AI = master.ReadInputRegisters(slaveAddress, 30012, 1);//读取电源电压
//TempRead = (PowerSupplyType.MaxPowerVoltage - PowerSupplyType.MinPowerVoltage) * (float)AI[0] / 4096;
PowerVoltageRead = 43.9F * (float)AI[12] / 4096;
PowerVoltageRead = (float)Math.Round(PowerVoltageRead, 2);
ComStateFlag = true;
}
catch (Exception)
{
//MessageBox.Show("请检查端口设置","错误提示");
ComStateFlag = false;
//throw;
}
}
private void timer1_Tick(object sender, EventArgs e)
{
try
{
byte slaveID = 1;
ushort startAddress = 0;
ushort numofPoints = 4;
//read DI(1xxxx)
bool[] status = master.ReadInputs(slaveID, startAddress, numofPoints);
for (int i = 0; i < numofPoints; i++)
{
if (status[i] == true)
{
listDI[i].BackColor = Color.DodgerBlue;
}
else
{
listDI[i].BackColor = Color.Navy;
}
}
//read DO(0xxxx)
bool[] coilstatus = master.ReadCoils(slaveID, startAddress, numofPoints);
for (int i = 0; i < numofPoints; i++)
{
if (coilstatus[i] == true)
{
listDO[i].BackColor = Color.Red;
}
else
{
listDO[i].BackColor = Color.DarkRed;
}
}
//read AI(3xxxx)
ushort[] register = master.ReadInputRegisters(slaveID, startAddress, numofPoints);
for (int i = 0; i < numofPoints; i++)
{
listAI[i].Text = register[i].ToString();
//If you need to show the value with other unit, you have to caculate the gain and offset
//eq. 0 to 0kg, 32767 to 1000kg
//0 (kg) = gain * 0 + offset
//1000 (kg) = gain *32767 + offset
//=> gain=1000/32767, offset=0
//double value = (double)register[i] * 10.0 / 32767;
//listAI[i].Text = value.ToString("0.00");
}
//read AO(4xxxx)
ushort[] holdingregister = master.ReadHoldingRegisters(slaveID, startAddress, numofPoints);
for (int i = 0; i < numofPoints; i++)
{
listAO[i].Text = holdingregister[i].ToString();
//If you need to show the value with other unit, you have to caculate the gain and offset
//eq. 0 to 0 mA, 32767 to 20 mA
//0 (mA) = gain * 0 + offset
//20 (mA) = gain *32767 + offset
//=> gain=20/32767, offset=0
//double holdvalue = (double)holdingregister[i] * 20.0 / 32767;
//listAO[i].Text = holdvalue.ToString("0.00");
}
}
catch (Exception exception)
{
//Connection exception
//No response from server.
//The server maybe close the com port, or response timeout.
if (exception.Source.Equals("System"))
{
Console.WriteLine(DateTime.Now.ToString() + " " + exception.Message);
}
//The server return error code.
//You can get the function code and exception code.
if (exception.Source.Equals("nModbusPC"))
{
string str = exception.Message;
int FunctionCode;
string ExceptionCode;
str = str.Remove(0, str.IndexOf("\r\n") + 17);
FunctionCode = Convert.ToInt16(str.Remove(str.IndexOf("\r\n")));
Console.WriteLine("Function Code: " + FunctionCode.ToString("X"));
str = str.Remove(0, str.IndexOf("\r\n") + 17);
ExceptionCode = str.Remove(str.IndexOf("-"));
switch (ExceptionCode.Trim())
{
case "1":
Console.WriteLine("Exception Code: " + ExceptionCode.Trim() + "----> Illegal function!");
break;
case "2":
Console.WriteLine("Exception Code: " + ExceptionCode.Trim() + "----> Illegal data address!");
break;
case "3":
Console.WriteLine("Exception Code: " + ExceptionCode.Trim() + "----> Illegal data value!");
break;
case "4":
Console.WriteLine("Exception Code: " + ExceptionCode.Trim() + "----> Slave device failure!");
break;
}
/*
* //Modbus exception codes definition
* Code * Name * Meaning
* 01 ILLEGAL FUNCTION The function code received in the query is not an allowable action for the server.
*
* 02 ILLEGAL DATA ADDRESS The data addrdss received in the query is not an allowable address for the server.
*
* 03 ILLEGAL DATA VALUE A value contained in the query data field is not an allowable value for the server.
*
* 04 SLAVE DEVICE FAILURE An unrecoverable error occurred while the server attempting to perform the requested action.
*
* 05 ACKNOWLEDGE This response is returned to prevent a timeout error from occurring in the client (or master)
* when the server (or slave) needs a long duration of time to process accepted request.
*
* 06 SLAVE DEVICE BUSY The server (or slave) is engaged in processing a long–duration program command , and the
* client (or master) should retransmit the message later when the server (or slave) is free.
*
* 08 MEMORY PARITY ERROR The server (or slave) attempted to read record file, but detected a parity error in the memory.
*
* 0A GATEWAY PATH UNAVAILABLE The gateway is misconfigured or overloaded.
*
* 0B GATEWAY TARGET DEVICE FAILED TO RESPOND No response was obtained from the target device. Usually means that the device is not present on the network.
*/
}
}
}
static void Main(string[] args)
{
try{
/*
* Connecting via Serial
*/
SerialPort serialPort = new SerialPort(); //Create a new SerialPort object.
serialPort.PortName = "COM5"; //PC port
serialPort.BaudRate = 19200; //baud rate
serialPort.DataBits = 8;
serialPort.Parity = Parity.None;
serialPort.StopBits = StopBits.One;
serialPort.RtsEnable = true; //false for RS232, true for RS48
serialPort.Open();
ModbusSerialMaster master = ModbusSerialMaster.CreateRtu(serialPort); //or .CreateAscii(serialPort)
master.Transport.ReadTimeout = 1000; //ms
{
// read multiple int16 values
string[] totusTemps =
{
"Thermal/AmbientTemp",
"Thermal/AmbientTemp/1hAvg",
"Thermal/AmbientHumidity",
"Thermal/AmbientHumidity/1hAvg",
"Thermal/TopOilTemp",
"Thermal/TopOilTemp/1hAvg",
"Thermal/BottomOilTemp",
"Thermal/BottomOilTemp/1hAvg",
"Thermal/TapChangerTemp",
"Thermal/TapChangerTemp/1hAvg"
};
{
//read int16 temperatures
ushort numInputs = 10;
byte slaveID = 1;
ushort startAddress = 1000; //select address from Totus Modbus table
ushort[] temps = master.ReadInputRegisters(slaveID, startAddress, numInputs); //*2 because we are reading 2byte unsigned short that needs converted to 4 byte floats
for (int i = 0; i < numInputs; i++)
{
Console.WriteLine("{0} = {1}°C", totusTemps[i], (float)temps[i] / 10); // divide by 10 as specified in Scaling column
}
}
}
{
//read alarms
byte slaveID = 1;
ushort numInputs = 2;
ushort startAddress = 100;
bool[] alarms = master.ReadInputs(slaveID, startAddress, numInputs);
string[] totusAlarms =
{
"ALARM/System/HL/State",
"ALARM/System/HHLL/State"
};
for (int i = 0; i < numInputs; i++)
{
Console.WriteLine("{0} = {1}", totusAlarms[i], alarms[i]);
}
}
{
//read DGA float32 gases
string[] totusDGA =
{
"DGA/SourceA/CH4",
"DGA/SourceA/C2H6",
"DGA/SourceA/C2H4",
"DGA/SourceA/C2H2",
"DGA/SourceA/CO",
"DGA/SourceA/CO2",
"DGA/SourceA/O2",
"DGA/SourceA/N2",
"DGA/SourceA/H2",
"DGA/SourceA/H2O",
"DGA/SourceA/TDCG",
"DGA/SourceA/THC"
};
byte slaveID = 1;
ushort numInputs = 12;
ushort startAddress = 2200; //select address from Totus Modbus table
ushort[] inputsdga = master.ReadInputRegisters(slaveID, startAddress, (ushort)(numInputs * 2)); //*2 because we are reading 2byte unsigned short that needs converted to 4 byte floats
for (int i = 0; i < numInputs; i++)
{
Console.WriteLine("Float32 {0} {1} = {2} ppm", startAddress + i * 2, totusDGA[i], Convert2Float(inputsdga[i * 2], inputsdga[i * 2 + 1]));
}
}
master.Dispose();
}
catch (Exception exception)
{
//Connection exception
//No response from server.
//The server maybe close the connection, or response timeout.
Console.WriteLine(exception.Message);
}
Console.Read();
}