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ReadProductCode() #31

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90713f2
my colleague added ReadProductCode()
hp-beko Sep 26, 2019
b3d61f1
Update README.md
hp-beko Sep 26, 2019
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210 changes: 210 additions & 0 deletions EasyModbus/ModbusClient.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
using System.Reflection;
using System.Text;
using System.Collections.Generic;
using System.Threading;

namespace EasyModbus
{
Expand Down Expand Up @@ -2837,5 +2838,214 @@ public string LogFileFilename
}
}

public string ReadProductCode()
{
const int NO_BYTES_READ_PRODUCTCODE = 19;
const int PRODUCTCODE_START_IDX = 16;

string retVal = String.Empty;

if (debug) StoreLogData.Instance.Store("FC43 (Read Device Identification from Master device), StartingAddress: " + startingAddress + ", Quantity: " + quantity, System.DateTime.Now);
transactionIdentifierInternal++;
if (serialport != null)
if (!serialport.IsOpen)
{
if (debug) StoreLogData.Instance.Store("SerialPortNotOpenedException Throwed", System.DateTime.Now);
throw new EasyModbus.Exceptions.SerialPortNotOpenedException("serial port not opened");
}
if (tcpClient == null & !udpFlag & serialport == null)
{
if (debug) StoreLogData.Instance.Store("ConnectionException Throwed", System.DateTime.Now);
throw new EasyModbus.Exceptions.ConnectionException("connection error");
}


int[] response;
this.transactionIdentifier = BitConverter.GetBytes((uint)transactionIdentifierInternal);
this.protocolIdentifier = BitConverter.GetBytes((int)0x0000);
this.length = BitConverter.GetBytes((int)0x0005);
this.functionCode = 0x2B;
byte ReadDeviceInformation = 0x0E;
byte ReadDeviceID = 0x04;
byte ObjectID = 0x01;


Byte[] data = new byte[]{
this.transactionIdentifier[1],
this.transactionIdentifier[0],
this.protocolIdentifier[1],
this.protocolIdentifier[0],
this.length[1],
this.length[0],
this.unitIdentifier, //From here Bytes for CRC 0x01
this.functionCode, //0x2B
ReadDeviceInformation, //0x0E
ReadDeviceID, //0x04
ObjectID, //0x01
this.crc[0],
this.crc[1]
};

crc = BitConverter.GetBytes(calculateCRC(data, 5, 6));

data[11] = crc[0];
data[12] = crc[1];

if (serialport != null)
{
dataReceived = false;

bytesToRead = NO_BYTES_READ_PRODUCTCODE;

serialport.Write(data, 6, 7); //Including CRC-Checksum

if (debug)
{
byte[] debugData = new byte[7];
Array.Copy(data, 6, debugData, 0, 7);
if (debug) StoreLogData.Instance.Store("Send Serial-Data: " + BitConverter.ToString(debugData), System.DateTime.Now);
}

if (SendDataChanged != null)
{
sendData = new byte[7];
Array.Copy(data, 6, sendData, 0, 7);
SendDataChanged(this);
}

data = new byte[2100];

readBuffer = new byte[256];

DateTime dateTimeSend = DateTime.Now;

byte receivedUnitIdentifier = 0xFF;

while (receivedUnitIdentifier != this.unitIdentifier & !((DateTime.Now.Ticks - dateTimeSend.Ticks) > TimeSpan.TicksPerMillisecond * this.connectTimeout))
{
while (dataReceived == false & !((DateTime.Now.Ticks - dateTimeSend.Ticks) > TimeSpan.TicksPerMillisecond * this.connectTimeout))
System.Threading.Thread.Sleep(1);
data = new byte[2100];

Array.Copy(readBuffer, 0, data, 6, readBuffer.Length);

receivedUnitIdentifier = data[6];
}

if (receivedUnitIdentifier != this.unitIdentifier)
data = new byte[2100];
else
countRetries = 0;
}
else if (tcpClient.Client.Connected | udpFlag)
{

if (udpFlag)
{
UdpClient udpClient = new UdpClient();
IPEndPoint endPoint = new IPEndPoint(System.Net.IPAddress.Parse(ipAddress), port);
udpClient.Send(data, data.Length - 2, endPoint);
portOut = ((IPEndPoint)udpClient.Client.LocalEndPoint).Port;
udpClient.Client.ReceiveTimeout = 5000;
endPoint = new IPEndPoint(System.Net.IPAddress.Parse(ipAddress), portOut);
data = udpClient.Receive(ref endPoint);
}
else
{
stream.Write(data, 0, data.Length - 2);
if (debug)
{
byte[] debugData = new byte[data.Length - 2];
Array.Copy(data, 0, debugData, 0, data.Length - 2);
if (debug) StoreLogData.Instance.Store("Send ModbusTCP-Data: " + BitConverter.ToString(debugData), System.DateTime.Now);
}
if (SendDataChanged != null)
{
sendData = new byte[data.Length - 2];
Array.Copy(data, 0, sendData, 0, data.Length - 2);
SendDataChanged(this);
}
data = new Byte[2100];

int NumberOfBytes = stream.Read(data, 0, data.Length);

if (ReceiveDataChanged != null)
{
receiveData = new byte[NumberOfBytes];
Array.Copy(data, 0, receiveData, 0, NumberOfBytes);
if (debug) StoreLogData.Instance.Store("Receive ModbusTCP-Data: " + BitConverter.ToString(receiveData), System.DateTime.Now);
ReceiveDataChanged(this);
}
}
}

if (data[7] == 0x83 & data[8] == 0x01)
{
if (debug) StoreLogData.Instance.Store("FunctionCodeNotSupportedException Throwed", System.DateTime.Now);
throw new EasyModbus.Exceptions.FunctionCodeNotSupportedException("Function code not supported by master");
}

if (data[7] == 0x83 & data[8] == 0x02)
{
if (debug) StoreLogData.Instance.Store("StartingAddressInvalidException Throwed", System.DateTime.Now);
throw new EasyModbus.Exceptions.StartingAddressInvalidException("Starting address invalid or starting address + quantity invalid");
}

if (data[7] == 0x83 & data[8] == 0x03)
{
if (debug) StoreLogData.Instance.Store("QuantityInvalidException Throwed", System.DateTime.Now);
throw new EasyModbus.Exceptions.QuantityInvalidException("quantity invalid");
}

if (data[7] == 0x83 & data[8] == 0x04)
{
if (debug) StoreLogData.Instance.Store("ModbusException Throwed", System.DateTime.Now);
throw new EasyModbus.Exceptions.ModbusException("error reading");
}

if (serialport != null)
{
crc = BitConverter.GetBytes(calculateCRC(data, (ushort)(data[8] + 3), 6));

if ((crc[0] != data[data[8] + 9] | crc[1] != data[data[8] + 10]) & dataReceived)
{
if (debug) StoreLogData.Instance.Store("CRCCheckFailedException Throwed", System.DateTime.Now);
if (NumberOfRetries <= countRetries)
{
countRetries = 0;
throw new EasyModbus.Exceptions.CRCCheckFailedException("Response CRC check failed");
}
else
{
countRetries++;
return ReadProductCode();
}
}
else if (!dataReceived)
{
if (debug) StoreLogData.Instance.Store("TimeoutException Throwed", System.DateTime.Now);
if (NumberOfRetries <= countRetries)
{
countRetries = 0;
throw new TimeoutException("No Response from Modbus Slave");
}
else
{
countRetries++;
return ReadProductCode();
}
}
}

int lengthOfPayload = Convert.ToInt32(data[15]);

for (int i = PRODUCTCODE_START_IDX; i < PRODUCTCODE_START_IDX + lengthOfPayload; i++)
{
retVal =retVal + Convert.ToChar(data[i]).ToString();
}

return retVal.Trim();
}

}
}
1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ Supports Function Codes:
- Write Single Register (FC6)
- Write Multiple Coils (FC15)
- Write Multiple Registers (FC16)
- Read Production Code (FC43/14)


Modbus TCP, Modbus UDP and Modbus RTU client/server library
Expand Down