diff --git a/ButcherFactory.Form/Controls/Utils/DataFormatBase.cs b/ButcherFactory.Form/Controls/Utils/DataFormatBase.cs
index 48aac80..ab91d4d 100644
--- a/ButcherFactory.Form/Controls/Utils/DataFormatBase.cs
+++ b/ButcherFactory.Form/Controls/Utils/DataFormatBase.cs
@@ -36,7 +36,7 @@ namespace ButcherFactory.Controls
 
     public const short BUFSIZE = 36;
     // 根据开始字符找出 一个完整的数据帧
-    public string FindDataFrame(string buf, int fSize)
+    public virtual string FindDataFrame(string buf, int fSize)
     {
       var bufSize = buf.Length;
       if (fSize > bufSize)
diff --git a/ButcherFactory.Form/Controls/Utils/JST2018SDataFormat.cs b/ButcherFactory.Form/Controls/Utils/JST2018SDataFormat.cs
index a04d61d..ad88ba9 100644
--- a/ButcherFactory.Form/Controls/Utils/JST2018SDataFormat.cs
+++ b/ButcherFactory.Form/Controls/Utils/JST2018SDataFormat.cs
@@ -25,7 +25,7 @@ namespace ButcherFactory.Controls
 
     public override short Bufsize
     {
-      get { return 36; }
+      get { return 9; }
     }
 
     public override string ParseData(string buf, out bool isStatic)
@@ -45,7 +45,7 @@ namespace ButcherFactory.Controls
       // buffer[1] 符号位
       if (buf[5] == 0x01)
       {
-        weight = (Convert.ToDecimal(weight) / 1000).ToString("#0.0");
+        weight = (Convert.ToDecimal(weight) / 1000).ToString("#0.0000");
       }
       if ((buf[1] & 0x20) == 1)
         weight = "-" + weight;
@@ -72,6 +72,26 @@ namespace ButcherFactory.Controls
       return true;
     }
 
+    public override string FindDataFrame(string buf, int fSize)
+    {
+      var bufSize = buf.Length;
+      if (fSize > bufSize)
+      {
+        return string.Empty;
+      }
+
+      int index = buf.IndexOf(Beginchar); // 查找开始字符的索引
+
+      if (index < 0 || (index + fSize) > bufSize)
+      {
+        return string.Empty;
+      }
+
+      string data = buf.Substring(index, fSize);
+
+      return data;
+    }
+
     private static string InsertDot(string weight, int dotBits)
     {
       var rst = weight.Insert(weight.Length - dotBits, ".").Trim('0');
diff --git a/ButcherFactory.Form/Controls/WeightControl.cs b/ButcherFactory.Form/Controls/WeightControl.cs
index 2b3a736..48d796f 100644
--- a/ButcherFactory.Form/Controls/WeightControl.cs
+++ b/ButcherFactory.Form/Controls/WeightControl.cs
@@ -193,7 +193,7 @@ namespace ButcherFactory.Controls
             _dataStrBuilder.Clear();
             _dataStrBuilder.Append(c);
           }
-          else if (c == _dataFormat.Endchar || _dataStrBuilder.Length > _dataFormat.Bufsize)
+          else if (c == _dataFormat.Endchar || _dataStrBuilder.Length >= _dataFormat.Bufsize)
           {
             _dataStrBuilder.Append(c);
             bool isStatic;