1

source/DeviceLibrary/DeviceLibrary/IO/AIOBOX/AIOBOXManager.cs

@@ -336,6 +336,8 @@ namespace OnlineStore.DeviceLibrary
 
         public override void CloseAllConnection()
         {
+            try
+            {
                 if (conTimer != null)
                 {
                     conTimer.Stop();
@@ -348,7 +350,13 @@ namespace OnlineStore.DeviceLibrary
                 {
                     aio.Close();
                 }
+            }
+            catch (Exception ex)
+            {
+                LogUtil.error("AIO CloseAllConnection Error:" + ex.ToString());
+            }
             AIOMap.Clear();
+
         }
         public override void WriteSingleDO(string ioIp, byte slaveId, ushort StartAddress, IO_VALUE onOff)
         {