Risco WiComm-1, Руководство пользователя

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Chapter 8. Appendix
8.2 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:
y
Installation Problem
y
Network setting problem
y
Port setting problem
y
Wireless network setting problem
8.2.1 Troubleshooting for Installation
If you cannot access a device connected via the WiComm-1, it is better to check the network connection and cables
first.
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Check if all cables are correctly connected. (Ethernet or DB-9 serial cables)
y
Check if 127 V adapter provided is used as the power adapter.
y
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.
y
Check if all IP addresses and port numbers are correctly entered.
y
If a hub is being used, check if hub ports are normally working by connecting the WiComm-1 to another port.
8.2.2 Troubleshooting for Setting Networks
y
If TCP/IP is used, check if the PC and the WiComm-1 exist on the same network. (Check the connection with
the WiComm-1 by running the ping command on the PC). The IP address of the WiComm-1 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 WiComm-1 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 correctly assigned.
y
If the IP address the WiComm-1 is automatically assigned through a DHCP server, the WiComm-1 IP address
may be changed. A fixed IP address is assigned when the DHCP server assigns a permanent IP address to the
WiComm-1 or the fixed IP address assignment is set in the WiComm-1.
y
A problem may occur from an incorrect or duplicate IP address Check if the IP address is assigned to the
WiComm-1 correctly and if the IP address is assigned to another device on the network. In TCP/IP connection,
IP address confliction is the most frequent problem. If the IP address is incorrect, it may be the problem of the
device connection.
y
Check if the PC and the WiComm-1 are using the same subnet mask. (For example, if the WiComm-1 uses the
subnet mask of 255.255.255.0, the computer should use the same subnet mask). In addition, check if the
default gateway is set correctly.
y
If an incorrect IP address is assigned, find the DHCP server and check if the DHCP server assigned incorrect IP
address to the WiComm-1.
8.2.3 Troubleshooting for Setting Ports
y
If a PC is not connected to a target device, check the connection status by using the PING x.x.x.x command
(x.x.x.x is the IP address of the WiComm-1) on the command prompt. If the ping test is not performed correctly,
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