diff --git a/Aucma.Core.PLc/Impl/MelsecPlc.cs b/Aucma.Core.PLc/Impl/MelsecPlc.cs
index c5299861..6bfe7e2b 100644
--- a/Aucma.Core.PLc/Impl/MelsecPlc.cs
+++ b/Aucma.Core.PLc/Impl/MelsecPlc.cs
@@ -446,8 +446,8 @@ namespace Aucma.Core.PLc
             try
             {
                 melsecMcNet.ReceiveTimeOut = 2000;
-                // 2023-11-14变成同步方法，异步心跳导致信号滞后，会重复请求重连
-                OperateResult<bool> read =  melsecMcNet.ReadBool(address);
+             
+                OperateResult<bool> read = await melsecMcNet.ReadBoolAsync(address);
                 if (read.IsSuccess)
                 {
                     IsConnected = true;