/// <summary>
/// 读寄存器或线圈
/// </summary>
/// <param name="protocol">协议( ZG_DTU、HD_DTU或者JBT_DTU)</param>
/// <param name="socket">socket</param>
/// <param name="tel">DTU的Id,长得跟TEL相似，都是11位的</param>
/// <param name="address">485总线上的设备地址</param>
/// <param name="RegisterStartAdd">寄存器起始地址 寄存器个数为1，方法内部已写死。</param>
/// <param name="ModbusfunctionCode">功能码 </param>
/// <param name="dataType">寄存器类型 1代表16位无符号二进制的寄存器，2代表32位的寄存器</param>
/// <param name="DecodeOrder">获取的数据的高低位顺序</param>
/// <param name="receiveTimeout">超时时间 </param>
/// <param name="channel">GPRS控制器的通道号，也是串口号</param>
/// <param name="values">返回的value值 虽然是个数组，但数据只有一个，下标为0</param>
/// <returns></returns>
public static void SendFc(string protocol, Socket socket, string tel, byte address, ushort RegisterStartAdd,
int ModbusfunctionCode, string dataType, string DecodeOrder, int receiveTimeout, byte channel, ModbusReturn modbusReturn)
{
int dataLength = 2; //16位无符号二进制的寄存器数据长度为两个字节 默认为16位寄存器
if (dataType == "2") //说明是"32位无符号二进制" 所以要用4个字节
{
dataLength = 4;
}
//LogManager.AddDebug("dataLength=" + dataLength);
byte[] message = new byte[8];
//Function 3 response buffer:
byte[] response = new byte[5 + dataLength * 1];
//Build outgoing modbus message:
// LogManager.AddDebug(" BuildMessage(" + address + ", " + ModbusfunctionCode + ", " + RegisterStartAdd + ", 1, ref message);");
BuildMessage(address, (byte)ModbusfunctionCode, RegisterStartAdd, ushort.Parse(dataType), ref message);
//Send modbus message to Serial Port:
string msg = "";
try
{
modbusReturn.sendMsg = message;
DTU.SendUserData(protocol, socket, message, message.Length, tel, channel);
//sp.Write(message, 0, message.Length);
GetResponse(protocol, socket, receiveTimeout, ref response);
modbusReturn.RecMsg = response;
}
catch (SocketException ex)
{
modbusReturn.ErrorMsg = ex.Message;
modbusReturn.success = false;
return;
}
catch (Exception ex)
{
LogMg.AddError(ex);
modbusReturn.ErrorMsg = "Error in read event: " + ex.Message;
modbusReturn.success = false;
return;
}
//处理返回结果
if (CheckResponse(response))
{
int datalength = response[2]; //数据长度(单位:字节)
//LogManager.AddDebug("返回的数据长度datalength=" + datalength);
//设置默认解码顺序
if (string.IsNullOrEmpty(DecodeOrder))
{
if (datalength == 2)
{
DecodeOrder = "12";
}
else if (datalength == 4)
{//三四个字节为高位，一二两个字节为低位
DecodeOrder = "3412";
}
}
//解析返回的modbus数据
modbusReturn.value = 0;
try
{
for (int i = 0; i < DecodeOrder.Length; i++)
{
int n = Convert.ToInt32(DecodeOrder[i].ToString());
modbusReturn.value <<= 8;
modbusReturn.value += response[2 + n];
}
}
catch (Exception)
{
modbusReturn.ErrorMsg = "解析返回的modbus时出错，modbus指令为：" + msg;
modbusReturn.success = false;
return;
}
modbusReturn.ErrorMsg = "Read successful";
modbusReturn.success = true;
return;
}
else
{
modbusReturn.ErrorMsg = "CRC error";
modbusReturn.success = false;
return;
}
}
/// <summary>
/// 写寄存器
/// </summary>
/// <param name="socket"></param>
/// <param name="address"></param>
/// <param name="start"></param>
/// <param name="registers"></param>
/// <param name="values"></param>
/// <returns></returns>
public static void SendFc16(string protocol, Socket socket, string tel, byte address, ushort start, ushort registers, string dataType, int receiveTimeout, byte channel, short[] values, ModbusReturn modbusReturn)
{
// LogManager.AddDebug("SendFc16(Socket socket, byte " + address + ", ushort " + start + ", ushort " + registers + ", string " + dataType + ", int " + receiveTimeout + ", short " + values[0] + ")");
int dataLength = 2; //默认数据长度为两个字节
if (dataType == "2") //说明是"32位无符号二进制" 所以要用4个字节
{
dataLength = 4;
}
//Message is 1 addr + 1 fcn + 2 start + 2 reg + 1 count + 2 * reg vals + 2 CRC
byte[] message = new byte[9 + dataLength * registers];
//Function 16 response is fixed at 8 bytes
byte[] response = new byte[8];
try
{
//Add bytecount to message:
message[6] = (byte)(registers * dataLength);
//Put write values into message prior to sending:
for (int i = 0; i < registers; i++)
{
for (int j = 0; j < dataLength; j++)
{
message[7 + (dataLength * i) + j] = (byte)(values[i] >> 8 * (dataLength - j - 1)); //将value[i]转换成指定字节长度的字节数组, (高位在前,低位在后) message下标从第七个开始
}
//message[7 + 2 * i] = (byte)(values[i] >> 8);
//message[8 + 2 * i] = (byte)(values[i]);
}
//Build outgoing message:
BuildMessage(address, (byte)16, start, registers, ref message);
//string msg = "";
//for (int i = 0; i < message.Length; i++)
//{
// msg += "\r\n message[" + i + "]= 值:" + message[i];
//}
//LogManager.AddDebug("写 message.length=" + message.Length + msg);
}
catch (Exception ex)
{
LogMg.AddError(ex);
}
//Send Modbus message to Serial Port:
try
{
modbusReturn.sendMsg = message;
DTU.SendUserData(protocol, socket, message, message.Length, tel, channel);
//sp.Write(message, 0, message.Length);
GetResponse(protocol, socket, receiveTimeout, ref response);
modbusReturn.RecMsg = response;
}
catch (Exception err)
{
modbusReturn.ErrorMsg = "Error in write event: " + err.Message;
modbusReturn.success = false;
return;
}
//Evaluate message:
if (CheckResponse(response))
{
modbusReturn.ErrorMsg = "Write successful";
modbusReturn.success = true;
return;
}
else
{
modbusReturn.ErrorMsg = "CRC error";
modbusReturn.success = false;
return;
}
/* }
* else
* {
* modbusStatus = "Serial port not open";
* return false;
* }
* */
}