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Problems While Using This Product

This page explains the troubleshooting procedures to resolve problems you may experience while using this product.



Serial devices are not displayed or temporarily displayed in SX Virtual Link for Serial Device Server.

If serial devices are not displayed in SX Virtual Link for Serial Device Serveryou need to check the cable connection as well as the network settings between this product and your PC. 

Solution Please check the LED status of this product and the Ethernet Hub this product is connected to. If the LED indicates improper status, replace the AC plug and other cables, and reboot the connected devices.

Solution It takes up to 30sec for this product to get ready after it is powered on.
Please wait until this product becomes ready, and then click the Refresh button
  in SX Virtual Link for Serial Device Server again.

Solution Please add SX Virtual Link for Serial Device Server to the exception list in your security software. Please refer to the FAQ on our website ( http://www.silexamerica.com/ ) for details on adding an application to the exception list.

Solution First, check the IP Address of your PC.
To check the IP Address, use the Windows Command Prompt.
  1. Select Start - All Programs - Accessories - Command Prompt.
  2. When the Command Prompt is started, execute the ipconfig command.
Example of executing the ipconfig command
Microsoft Windows [Version 6.0.6001]
Copyright (C) 2006 Microsoft Corporation. All rights reserved.

C:\Users\username>ipconfig  (Press Enter)

Windows IP Configuration


Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        IPv6 Address. . . . . . . . . . . . : XX:XX:XX:XX:XX:XX:XX:XX
        Temporary IPv6 Address. . . : XX:XX:XX:XX:XX:XX:XX:XX
        IPv4 Address. . . . . . . . . . . . : 192.168.20.10   (IP Address of PC)
        Subnet Mask. . . . . . . . . . . . : 255.255.255.0
        Default Gateway. . . . . . . . . :

C:\Users\username>
Check that the IP Address of the PC is a proper address for communicating with the IP Address of this product.
If the PC and this product are in the same network segment but use a different network number in their addresses, you need to change either the address of the PC or this product. Also, if there is a router between the PC and this product, check that the default gateway address is properly configured.

Solution First, turn off this product and open the Windows Command Prompt.
Ping the IP address of this product.
  1. Select Start - All Programs - Accessories - Command Prompt.
  2. When the Command Prompt appears, execute the ping command.
Example of executing the ping command when the IP address of this product is 192.168.20.20
Microsoft Windows [Version 6.0.6001]
Copyright 
(C) 2006 Microsoft Corporation. All rights reserved.

C:\Users\username>ping 192.168.20.20 (Press Enter)

Pinging 192.168.20.20 with 32 bytes of data:

(When there is a reply)
Reply from 192.168.20.20: bytes=32 time<1ms TTL=128
Reply from 192.168.20.20: bytes=32 time<1ms TTL=128
Reply from 192.168.20.20: bytes=32 time<1ms TTL=128
Reply from 192.168.20.20: bytes=32 time<1ms TTL=128

(When there is no reply)
Reply from XXX.XXX.XXX.XXX: Destination host unreachable.
Reply from XXX.XXX.XXX.XXX: Destination host unreachable.
Reply from XXX.XXX.XXX.XXX: Destination host unreachable.
Reply from XXX.XXX.XXX.XXX: Destination host unreachable.

If there is a reply while this product is turned off, it means there is another network device using the same IP address as this product. In such a case, change the IP address of either this product or the other network device.

Solution Please check that the cable is properly plugged to this product and the serial device. If there is a spare serial cable, replace the cable and check the operation.

I cannot communicate with a serial device.

If you cannot communicate with the serial device connected to this product, you need to check the communication settings on this product and serial communication software.

Solution Please check that the cable is properly plugged to this product and the serial device. If there is a spare serial cable, replace the cable and check the operation.

Solution When you are using SX Virtual Link for Serial Device Server to communicate with a serial device, the serial communication settings may differ between the serial device and serial communication software. If the serial communication settings are different between them, you may not be able to communicate with the serial device. Also, output serial data may not be transferred correctly.
Check the settings on serial communication software and match it with those used in the serial device. For details on how to change the settings on serial communication software, refer to the operation manual that came with it.

Solution When you are using Ecable Mode, Raw TCP Connection Mode or UDP Multicast Mode to communicate with a serial device, the serial communication settings may differ between this product and serial device. If the serial communication settings are different between them, you may not be able to communicate with the serial device. Also, output serial data may not be transferred correctly.
You can change the serial communication settings of this product from the Web page. For details on how to change the settings on Web page, refer to Advanced Settings Using Web Browser or Configuration Item List - Serial Configuration.

Solution In Ecable Mode, two SX-520 must be configured with the proper IP addresses to communicate each other and the same TCP port number should be used. If these settings are different between them, a serial communication may fail since a network connection is not established.
For detail settings to use this product in Ecable Mode, refer to Ecable Mode (Link to the Registered Device Automatically) - 2. Before You Begin.

Solution In Raw TCP Connection Mode, this product and application program should be configured with the same TCP port number.  If this setting is different between them, a serial communication may fail since a network connection is not established.
For detail settings to use this product in Raw TCP Connection Mode, refer to Raw TCP Connection Mode (Link to Serial Device in TCP Raw Port) - 2. Before You Begin.

Solution In UDP Multicast Mode, this product and application program should be configured with the same IP multicast address. If this setting is different between them, a serial communication may fail since a network connection is not established.
For detail settings to use this product in UDP Multicast Mode, refer to UDP Multicast Mode (Multicast to Several SX-520 at Once)3. Before You Begin.



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