public static int Export_ModBus(ref MODBUS_TX_MSG MBTM, ref byte[] Buf)
{
int i = 0;
int CheckValue;
MBTM.Addr = Buf[i++];
MBTM.FuncCode = Buf[i++];
MBTM.Length = Buf[i++];
if (MBTM.Length > 100)
{
return(0);
}
for (int n = 0; n < (MBTM.Length); n++)
{
MBTM.Buf[n] = Buf[n + i];
}
i += MBTM.Length;
CheckValue = Tools.GetCrc16(Buf, i);
MBTM.CheckValue = Buf[i + 1];
MBTM.CheckValue <<= 8;
MBTM.CheckValue |= Buf[i];
if (CheckValue == MBTM.CheckValue)
{
return(MBTM.Length);
}
return(-1);
}
public static int SendData(SerialPort CommPort, byte[] TxBuffer, int TxLength, ref byte[] RxBuffer, int RxLength)
{
int Length = 0;
MODBUS_TX_MSG MBTM = new MODBUS_TX_MSG();
MBTM.Buf = new byte[100];
for (int i = 0; i < 2; i++)
{
Length = SendDataOne(CommPort, TxBuffer, TxLength, ref RxBuffer, RxLength);
if (标准ModBus.Export_ModBus(ref MBTM, ref RxBuffer) != -1)
{
break;
}
}
// MessageBox.Show("重试次数过多");
return(Length);
}
private MODBUS_TX_MSG ThreadGetMsg(int Offset, int Count)
{
MODBUS_RX_MSG MBRM = new MODBUS_RX_MSG();
MODBUS_TX_MSG MBTM = new MODBUS_TX_MSG();
MBTM.Buf = new byte[100];
byte[] RxBuffer = new byte[200];
byte[] TxBuffer = new byte[200];
MBRM.Addr = Value.RSValue.RS485Addr;
MBRM.FuncCode = 0x03;
MBRM.Length = Count;
MBRM.Offset = (byte)Offset;
int Length = 标准ModBus.CreateMsg_ModBus(MBRM, ref TxBuffer);
Length = Usart.SendData(serialPort1, TxBuffer, Length, ref RxBuffer, 200);
标准ModBus.Export_ModBus(ref MBTM, ref RxBuffer);
return(MBTM);
}
private MODBUS_TX_MSG GetMsg(int Offset, int Count)
{
MODBUS_RX_MSG MBRM = new MODBUS_RX_MSG();
MODBUS_TX_MSG MBTM = new MODBUS_TX_MSG();
MBTM.Buf = new byte[100];
byte[] RxBuffer = new byte[200];
byte[] TxBuffer = new byte[200];
MBRM.Addr = byte.Parse(comboBox3.Text);
MBRM.FuncCode = 0x03;
MBRM.Length = Count;
MBRM.Offset = (byte)Offset;
int Length = 标准ModBus.CreateMsg_ModBus(MBRM, ref TxBuffer);
serialPort1.ReadTimeout = 500;
Length = Usart.SendData(serialPort1, TxBuffer, Length, ref RxBuffer, 200);
标准ModBus.Export_ModBus(ref MBTM, ref RxBuffer);
return(MBTM);
}