private void btnReadF_Click(object sender, EventArgs e)
{
txtValueF.Text = "";
float rd;
string address = txtAddress.Text.Trim();
short re = ENT.ReadReal(PlcMemory.DM, short.Parse(address), out rd);
if (re != 0)
{
//写入数据出错
txtValueF.Text = "数据读取出错！";
}
else
{
txtValueF.Text = rd.ToString();
}
}
public bool ReadSingleElement(PlcScanItems item, ref object value)
{
PlcMemory memorytype = item.AddressType;
string bitstartaddress = string.Empty;
short startaddress = 0;
if (item.DataType == DataType.BIT)
{
bitstartaddress = item.Address;
}
else
{
startaddress = short.Parse(item.Address);
}
lock (readLock)
{
switch (item.DataType)
{
case DataType.BIT:
short shortvalue = 0;
if (0 != omronethernetplc.GetBitState(memorytype, bitstartaddress, out shortvalue))
{
bConnectOmronPLC = false;
return(false);
}
value = shortvalue == 1 ? true : false;
break;
case DataType.INT16:
Int16 int16value = 0;
if (0 != omronethernetplc.ReadInt16(memorytype, startaddress, out int16value))
{
bConnectOmronPLC = false;
return(false);
}
value = int16value;
break;
case DataType.INT32:
Int32 int32value = 0;
if (0 != omronethernetplc.ReadInt32(memorytype, startaddress, out int32value))
{
bConnectOmronPLC = false;
return(false);
}
value = int32value;
break;
case DataType.REAL:
float floatvalue = 0.0f;
if (0 != omronethernetplc.ReadReal(memorytype, startaddress, out floatvalue))
{
bConnectOmronPLC = false;
return(false);
}
value = floatvalue;
break;
case DataType.UINT16:
UInt16 uint16value = 0;
if (0 != omronethernetplc.ReadUInt16(memorytype, startaddress, out uint16value))
{
bConnectOmronPLC = false;
return(false);
}
value = uint16value;
break;
case DataType.UINT32:
UInt32 uint32value = 0;
if (0 != omronethernetplc.ReadUint32(memorytype, startaddress, out uint32value))
{
bConnectOmronPLC = false;
return(false);
}
value = uint32value;
break;
}
return(true);
}
}