| 
 Error Message  | 
 Description  | 
| 
 Timeout error is occurred.  | 
 Time out occurred when connecting with the setting registered in the Pass-through Configuration Tool. Check that the GP is connected.  | 
| 
 Failed to open port of Virtual Com Driver.  | 
 Failed to open Virtual COM when connecting with the setting registered in the Pass-through Configuration Tool. Check that port number set by applications such as ladder software is the same.  | 
| 
 The node is already connected.  | 
 Connected to the GP that has already been connected with pass-through function. Check the connection status of pass through function with the Pass-through Configuration Tool.  | 
| 
 Virtual COM port driver is not properly installed. Please install Virtual COM port driver  | 
 Virtual COM port driver is not properly installed. After deleting virtual COM port driver, reinstall.  | 
| 
 Port number of virtual COM duplicated. Please change virtual port number of virtual Com in the device manager  | 
 Port number of virtual COM duplicated. Change the corresponding COM port number with device manager.  |