private bool Connect()
{
int iConnected = 0;
try
{
iConnected =
CS7TcpClient.ConnectPlc(
plcHandle,
Encoding.Default.GetBytes(IPAddress),
RackNumber,
SlotNumber,
false,
0,
0);
if (iConnected == 0)
{
plc_Connected = true;
return(true);
}
else
{
plc_Connected = false;
return(false);
}
}
catch (Exception error)
{
plc_Connected = false;
Console.WriteLine(error.Message);
return(false);
}
}
/// <summary>
/// 根据错误代码获取错误提示文本
/// </summary>
/// <param name="errorCode">错误代码</param>
public string GetErrorMsg(int errorCode)
{
byte[] errText = new byte[1024];
int resNo = CS7TcpClient.GetErrorMsg(errorCode, errText, errText.Length);
if (resNo == 0)
{
return(Encoding.Default.GetString(errText));
}
else
{
return($"ResNo={resNo}");
}
}
protected string ReadString(TCustomTKDevice device, ArrayCharOfTag tag)
{
byte[] buffer = new byte[tag.Length];
int resNo =
CS7TcpClient.ReadString(
plcHandle,
(int)tag.DB_Type,
device.DBNumber,
tag.DB_Offset,
(short)tag.Length,
buffer);
return(Encoding.Default.GetString(buffer));
}
public SiemensPLC_Test()
{
plcHandle = CS7TcpClient.CreatePlc();
}
private void Do()
{
if (!Connect())
{
return;
}
while (!thread_terminated_single)
{
int resNo = 0;
for (int i = 0; i < devices.Count; i++)
{
buffer = new byte[devices[i].BufferSize];
try
{
resNo =
CS7TcpClient.ReadBlockAsByte(
plcHandle,
0x84,
devices[i].DBNumber,
0,
buffer.Length,
buffer);
if (resNo != 0)
{
Console.WriteLine($"{devices[i].DBNumber}.ResNo={resNo}");
}
devices[i].DoSomething(buffer);
}
catch (Exception error)
{
Console.WriteLine(error.Message);
}
if (devices[i].COMM.MES_Heart_Beat.Used)
{
DateTime now = DateTime.Now;
DateTime lastCallTime = devices[i].LastMESHeartBeatTime;
if ((now - lastCallTime).TotalMilliseconds >= 2000)
{
devices[i].LastMESHeartBeatTime = now;
//devices[i].COMM.MES_Heart_Beat.Value =
// !(devices[i].COMM.MES_Heart_Beat.Value);
CS7TcpClient.WriteBool(
plcHandle,
0x84,
devices[i].DBNumber,
devices[i].COMM.MES_Heart_Beat.DB_Offset,
devices[i].COMM.MES_Heart_Beat.Position,
Convert.ToUInt16(!devices[i].COMM.MES_Heart_Beat.Value));
}
}
}
Thread.Sleep(10);
}
}
/// <summary>
/// 回写到 PLC 中
/// </summary>
private void WritebackToPLC(TCustomTKDevice device, CustomTagTest tag)
{
if (tag is BoolOfTag)
{
BoolOfTag ltag = tag as BoolOfTag;
CS7TcpClient.WriteBool(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
ltag.Position,
Convert.ToUInt16(ltag.Value));
}
else if (tag is ByteOfTag)
{
ByteOfTag ltag = tag as ByteOfTag;
CS7TcpClient.WriteByte(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
ltag.Value);
}
else if (tag is WordOfTag)
{
WordOfTag ltag = tag as WordOfTag;
CS7TcpClient.WriteWord(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
(uint)ltag.Value);
}
else if (tag is DWordOfTag)
{
DWordOfTag ltag = tag as DWordOfTag;
CS7TcpClient.WriteDWord(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
(uint)ltag.Value);
}
else if (tag is ArrayCharOfTag)
{
ArrayCharOfTag ltag = tag as ArrayCharOfTag;
string temp = ltag.Value.PadRight(ltag.Length, ' ').Substring(0, ltag.Length);
CS7TcpClient.WriteBlockAsByte(
plcHandle,
0x84,
device.DBNumber,
ltag.DB_Offset,
ltag.Length,
Encoding.Default.GetBytes(temp));
}
}
private void Disconnect()
{
CS7TcpClient.DisconnectPlc(plcHandle);
}
