diff --git a/Plugins/Drivers/PLC.ModBusMaster/DeviceModBusMaster.cs b/Plugins/Drivers/PLC.ModBusMaster/DeviceModBusMaster.cs
index 0ec7fa6..6e4e210 100644
--- a/Plugins/Drivers/PLC.ModBusMaster/DeviceModBusMaster.cs
+++ b/Plugins/Drivers/PLC.ModBusMaster/DeviceModBusMaster.cs
@@ -631,7 +631,9 @@ namespace PLC.ModBusMaster
                                 break;
                             case DataTypeEnum.Float:
                                 var f = float.Parse(ioArg.Value.ToString());
-                                ModBusDataConvert.SetReal(shortArray, 0, f);
+                                var fValue = BitConverter.SingleToUInt32Bits(f);
+                                shortArray[1] = (ushort)(fValue & 0xffff);
+                                shortArray[0] = (ushort)(fValue >> 16 & 0xffff);
                                 toWriteArray = ChangeBuffersOrder(shortArray, ioArg.EndianType);
                                 await _master.WriteMultipleRegistersAsync(slaveAddress, address, toWriteArray);
                                 break;
diff --git a/Plugins/Plugin/DeviceThread.cs b/Plugins/Plugin/DeviceThread.cs
index 5047fd5..74364ba 100644
--- a/Plugins/Plugin/DeviceThread.cs
+++ b/Plugins/Plugin/DeviceThread.cs
@@ -289,7 +289,8 @@ namespace Plugin
                                 {
                                     Address = deviceVariable.DeviceAddress,
                                     Value = para.Value,
-                                    ValueType = deviceVariable.DataType
+                                    ValueType = deviceVariable.DataType,
+                                    EndianType = deviceVariable.EndianType
                                 };
                                 var writeResponse = Driver
                                     .WriteAsync(e.RequestId, deviceVariable.Method, ioArgModel).Result;