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Problems During Setup


This page explains the troubleshooting procedures to resolve problems you may experience while installing DS-520AN.



DS-520AN is not displayed in the search result of the Device Server Setup

When DS-520AN is not displayed in the search result of Device Server Setup, the cause need to be determined from the installation status, network environment, and status of computer used for the configuration of DS-520AN.

Solution Please check the LED status of DS-520AN and the Ethernet Hub DS-520AN 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 DS-520AN to get ready after it is powered on. Please wait until DS-520AN becomes ready and then click the Search in the Device Server Setup.

Solution During the initial configuration, place DS-520AN and computer in the same network segment.

Solution Please reset DS-520AN to the factory default setting. Refer to Resetting to Factory Defaults for details.

Solution Please abort your security software. Refer to FAQ in our website ( https://www.silextechnology.com/ ) for details on how to abort security software.


Communication error occurs when configuring with Device Server Setup.

When a communication error occurs during Device Server Setup, the cause needs to be determined from the settings of the computer used for the configuration.

Solution During the initial configuration, place DS-520AN and computer in the same network segment.

Solution Please select Obtain an IP address automatically at Internet Protocol (TCP/IP) Properties of the computer.
Otherwise connect the computer and DS-520AN with a crossover cable or to the standalone Ethernet Hub and see how it works.

Solution Please reset DS-520AN to the factory default setting. Refer to Resetting to Factory Defaults for details.


How should I determine the way to assign an IP address to DS-520AN?

There are two ways to assign an IP address to DS-520AN; one is to Get IP address automatically from DHCP server and the other is to Assign IP address manually. Choose the way to assign an IP address according to your environment.

Solution You can use Get IP address automatically from DHCP server. As DS-520AN is set by default to Get IP address automatically, DS-520AN will obtain an IP address appropriate to your network environment from the DHCP server just by powering up DS-520AN.
Refer to Resetting to Factory Defaults for details on how to reset DS-520AN to the factory default settings.

Solution Please use DHCP Server feature of DS-520AN or Assign IP address manually. Keep in mind of the following points regarding the IP address to assign to DS-520AN.
  • Assign an IP address unique in the network.
  • Assign an IP address that has the same address class as the computer that will use DS-520AN.
    e.g. When an IP address of the computer is "192.168.0.xx", assign an address such as "192.168.0.100" that is not used by other network devices.

(Tips about the IP address)

  • An IP address is a unique number for identifying network devices. An IP address is indicated with four numbers divided by a period (.), for example "192.168.0.1". The integer from 0-255 is used for each number.
  • An IP address is, depending on the number assigned, categorized to 3 classes below.
  • Numbers making up the IP address are either network numbers indicating network, or host numbers indicating each network device; each number indicates the different meaning based on the IP address class. Each class is categorized as the following diagram which is indicating a network number as n, and a host number as u. An IP address with the same network number must be assigned to the network devices in the same network segment.
  • There is an address range in the IP address called the private address that could be used freely. In the LAN environment not directly connected to the internet, an IP address is assigned within the range of the private address.

    First 1 digits in IP address Class Definition of IP address
    n: network number
    u: host number
    Size of the network to be used Private address
    0 - 127 A n.u.u.u Large network 10.0.0.0 - 10.255.255.255
    128 - 191 B n.n.u.u Mid-size network 172.16.0.0 - 172.31.255.255
    192 - 223 C n.n.n.u Small network 192.168.0.0 - 192.168.255.255


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