diff --git a/HybirdFrameworkCore/Utils/BitUtls.cs b/HybirdFrameworkCore/Utils/BitUtls.cs
index eaf751b..ba47b50 100644
--- a/HybirdFrameworkCore/Utils/BitUtls.cs
+++ b/HybirdFrameworkCore/Utils/BitUtls.cs
@@ -53,7 +53,7 @@ public static class BitUtls
 
         if (propertyType == STRING)
         {
-            return Convert.ChangeType(Encoding.ASCII.GetString(bytes, start, length), propertyType);
+            return Convert.ChangeType(Encoding.ASCII.GetString(bytes, start, length/8), propertyType);
         }
 
         if (propertyType == BYTEARRAY)
diff --git a/Service/Charger/Client/ClientMgr.cs b/Service/Charger/Client/ClientMgr.cs
index 054e9df..7bc7243 100644
--- a/Service/Charger/Client/ClientMgr.cs
+++ b/Service/Charger/Client/ClientMgr.cs
@@ -31,6 +31,13 @@ public static class ClientMgr
         return o;
     }
 
+    /// <summary>
+    /// 通过channel获取client
+    /// </summary>
+    /// <param name="channel"></param>
+    /// <param name="sn"></param>
+    /// <param name="client">获取不到，client则为空</param>
+    /// <returns></returns>
     public static bool TryGetClient(IChannel channel, out string sn, out ChargerClient? client)
     {
         string? snt = ChannelUtils.GetAttr(channel, ChargerConst.ChargerSn);