/// <summary>
/// 写变量
/// </summary>
/// <param name="aModbusItem">变量</param>
/// <param name="aValue">值</param>
/// <returns>是否写成功</returns>
public bool WriteItem(ref ModbusItem aModbusItem, Iolist aValue)
{
//如果值相等则不需再重写
//if (aModbusItem.Value.ToString().Trim() == "" || aValue.Values.Value.ToString().Trim() == "")
// return false;
if (aModbusItem.Value.ToString() == aValue.Values.Value.ToString() &&
Convert.ToDecimal(aValue.Values.Value) != decimal.MaxValue)
{
return(false);
}
//if (aModbusItem.Direction == RwDirection.ReadWrite
// && (aValue.TagName == "FormerBreakageCount")
// || aValue.TagName == "RunCounting"
// || aValue.TagName == "StopCounting")
//{
// Log.WriteLog(Host.ToString() + "MODBUS WriteJob : " + aValue.TagName
// + " , " + aValue.TagCode
// + " , " + aModbusItem.Value
// + " , " + aValue.Values.ModbusValue.ToString()
// + " , " + aValue.Values.Value.ToString()
// + " , " + aValue.Values.OPCValue.ToString()
// + " , " + aModbusItem.Status.ToString());
//}
//写圈或写寄存器模式
CoilOrRegister iCoilOrRegiterMode = CoilOrRegister.Register;
//写长度
UInt16 uint16WriteLenth = 0;
//写缓存
byte[] bWriteBuffer = new byte[0];
//写数值
ItemValue ivItemValue = new ItemValue();
//判断数据类型
switch (aModbusItem.ItemType)
{
//WORD类型打包
case "WORD":
ivItemValue.Word = Convert.ToInt16(aValue.Values.Value.ToString());
bWriteBuffer = new byte[2];
bWriteBuffer[0] = ivItemValue.B1;
bWriteBuffer[1] = ivItemValue.B0;
uint16WriteLenth = 1;
break;
//DWORD类型打包
case "DWORD":
ivItemValue.DWord = Convert.ToInt32(aValue.Values.Value.ToString());
bWriteBuffer = new byte[4];
bWriteBuffer[0] = ivItemValue.B1;
bWriteBuffer[1] = ivItemValue.B0;
bWriteBuffer[2] = ivItemValue.B3;
bWriteBuffer[3] = ivItemValue.B2;
uint16WriteLenth = 2;
break;
//FLOAT类型打包
case "FLOAT":
ivItemValue.Float = (float)Convert.ToDouble(aValue.Values.Value.ToString());
bWriteBuffer = new byte[4];
bWriteBuffer[0] = ivItemValue.B1;
bWriteBuffer[1] = ivItemValue.B0;
bWriteBuffer[2] = ivItemValue.B3;
bWriteBuffer[3] = ivItemValue.B2;
uint16WriteLenth = 2;
break;
//STRING类型打包
case "STRING":
//数值转换为字符串
string strValue = Convert.ToString(aValue.Values.Value.ToString());
//缓存
bWriteBuffer = new byte[10];
//char[] cBuffer = new char[10];
//数据打包
for (int i = 0; i < bWriteBuffer.Length && i < strValue.Length; i++)
{
bWriteBuffer[i] = (byte)strValue[i];
}
//Array.Copy((byte[])cBuffer, 0, bWriteBuffer, 0, 10);
uint16WriteLenth = 5;
break;
case "BOOLEAN":
iCoilOrRegiterMode = CoilOrRegister.Coil;
bWriteBuffer = new byte[1];
bWriteBuffer[0] = Convert.ToByte(aValue.Values.Value);
uint16WriteLenth = 1;
break;
default:
uint16WriteLenth = 0;
break;
}
//写
if (uint16WriteLenth > 0)
{
switch (iCoilOrRegiterMode)
{
case CoilOrRegister.Coil:
//写线圈
if (WriteSingleCoil(aModbusItem.SlaveID, aModbusItem.ItemAddress, Convert.ToUInt16(bWriteBuffer[0])) == uint16WriteLenth)
{
//更新值
aModbusItem.Value = aValue.Values.Value;
aModbusItem.UpdateTime = DateTime.Now;
return(true);
}
else
{
return(false);
}
//break;
case CoilOrRegister.Register:
//写寄存器
if (WriteMultipleRegisters(aModbusItem.SlaveID, aModbusItem.ItemAddress, uint16WriteLenth, bWriteBuffer) == uint16WriteLenth * 2)
{
//更新值
aModbusItem.Value = aValue.Values.Value;
aModbusItem.UpdateTime = DateTime.Now;
return(true);
}
else
{
return(false);
}
//break;
default:
return(false);
//break;
}
}
else
{
return(false);
}
//return true;
}
/// <summary>
/// 读变量表
/// </summary>
/// <param name="aModbusItem">需要更新的变量表</param>
/// <returns>读写是否成功</returns>
public bool ReadItems(ref ModbusItem[] aModbusItem)
// public bool ReadItems(ref ModbusItem aModbusItem)//改成与WriteItem格式一样，去掉[]
{
//读线圈或读寄存器模式
CoilOrRegister iCoilOrRegiterMode = CoilOrRegister.Register;
//从轮询地址
byte bSlaveID = 0;
//变量长度
int iCount = 0;
//开始地址
UInt16 uint16StartAddr = 0;
//排序
var varSortItem = from item in aModbusItem
orderby item.SlaveID, item.ItemAddress
select item;
ModbusItem[] mbItems = varSortItem.ToArray();
//获得变量个数
iCount = mbItems.Length;
//读取变量
//遍历更新所有变量
for (int i = 0; i < iCount; i++)
{
//读取长度
UInt16 uint16Length = 0;
//获得从轮询地址
bSlaveID = Convert.ToByte(mbItems[i].SlaveID);
//获得开始地址
uint16StartAddr = Convert.ToUInt16(mbItems[i].ItemAddress);
//判断需要缓存的长度
switch (mbItems[i].ItemType)
{
case "WORD":
uint16Length += 1;
break;
case "DWORD":
case "FLOAT":
uint16Length += 2;
break;
case "STRING":
uint16Length += 5;
break;
case "BOOLEAN":
iCoilOrRegiterMode = CoilOrRegister.Coil;
uint16Length += 1;
break;
}
//当有读取长度时
if (uint16Length > 0)
{
if (iCoilOrRegiterMode == CoilOrRegister.Coil)
{
//数据缓存
byte[] bBuffer = new byte[uint16Length];
try
{
//读线圈
if (ReadCoils(bSlaveID, uint16StartAddr, uint16Length, bBuffer) == uint16Length)
{
//获得变量值缓存索引
int iItemValueBufferIndex = (mbItems[i].ItemAddress - uint16StartAddr);
//更新状态
mbItems[i].Status = ValueState.STATUS_GOOG;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
//值
mbItems[i].Value = Convert.ToBoolean(bBuffer[iItemValueBufferIndex]);
}
else
{
//更新状态
mbItems[i].Status = ValueState.STATUS_BAD;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
}
}
catch
{
//更新状态
mbItems[i].Status = ValueState.STATUS_BAD;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
//读失败
return(false);
}
}
else if (iCoilOrRegiterMode == CoilOrRegister.Register)
{
//数据缓存
byte[] bBuffer = new byte[uint16Length * 2];
try
{
//读寄存器
if (ReadHoldingRegisters(bSlaveID, uint16StartAddr, uint16Length, bBuffer) == uint16Length * 2)
{
//获得变量值缓存索引
int iItemValueBufferIndex = (mbItems[i].ItemAddress - uint16StartAddr) * 2;
//更新状态
mbItems[i].Status = ValueState.STATUS_GOOG;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
//变量数值缓存
ItemValue ivValue = new ItemValue();
//数值解析
switch (mbItems[i].ItemType)
{
//word类型数据解析
case "WORD":
ivValue.B0 = bBuffer[iItemValueBufferIndex + 1];
ivValue.B1 = bBuffer[iItemValueBufferIndex];
mbItems[i].Value = Convert.ToDecimal(ivValue.Word);
break;
//dword类型解析
case "DWORD":
ivValue.B0 = bBuffer[iItemValueBufferIndex + 1];
ivValue.B1 = bBuffer[iItemValueBufferIndex];
ivValue.B2 = bBuffer[iItemValueBufferIndex + 3];
ivValue.B3 = bBuffer[iItemValueBufferIndex + 2];
mbItems[i].Value = Convert.ToDecimal(ivValue.DWord);
break;
//float类型解析
case "FLOAT":
ivValue.B0 = bBuffer[iItemValueBufferIndex + 1];
ivValue.B1 = bBuffer[iItemValueBufferIndex];
ivValue.B2 = bBuffer[iItemValueBufferIndex + 3];
ivValue.B3 = bBuffer[iItemValueBufferIndex + 2];
mbItems[i].Value = Convert.ToDecimal(ivValue.Float);
break;
//字符串类型解析
case "STRING":
char[] cStrBuf = new char[10];
Array.Copy(bBuffer, iItemValueBufferIndex, cStrBuf, 0, 10);
string strValue = new string(cStrBuf);
mbItems[i].Value = strValue = strValue.Replace(new String(new Char[] { '\0' }), "");
break;
}
}
else
{
//更新状态
mbItems[i].Status = ValueState.STATUS_BAD;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
//读失败
return(false);
}
}
catch (Exception ex)
{
//更新状态
mbItems[i].Status = ValueState.STATUS_BAD;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
#if DEBUG
//Log.WriteLog(ex.ToString());
#else
//Log.WriteLog(ex.ToString());
#endif
}
}
else
{
//更新状态
mbItems[i].Status = ValueState.STATUS_BAD;
//时间戳
mbItems[i].UpdateTime = DateTime.Now;
}
}
}
//读成功
return(true);
}
