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); } }