Device Server User Guide
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Chapter 9.
Appendix
Troubleshooting
This section presents troubleshooting for various problems that may occur while using
the system. This section deals with the problems covering the following categories:
Installation Problem
If you cannot access a device connected via this device server, it is better to check
the network connection and cables first.
•
Check if all cables are correctly connected. (Ethernet or DB-9 serial cables)
•
If the LED status is abnormal, it may be caused by a problem from 10baseT or
100baseT cable, or a hub port. The reconnection with another cable or hub
port or the connection of another device to the cable may help you analyze the
cause of the problem.
•
Check if all IP addresses and port numbers are correctly entered.
•
If a hub is being used, check if hub ports are normally working by connecting
the DeviceServer to another port.
Network setting problem
•
If TCP/IP is used, check if the PC and the device server exist on the same
network. (Check the connection with the device server by running the ping
command on the PC). The IP address of the device server should exist on the
same logical network as the host computer. For example, if the IP address of
the PC is 192.189.207.3 and the subnet mask is set to 255.255.255.0, the IP
address of the device server should be set to 192.189.207.x (x is an integer
between 1 to 254). In addition, check if the address of the default gateway is
