Rockwell-automation 2711PC-xxxx PanelView Plus Compact User Manual User Manual download pdf (Page 114)

114 Publication 2711PC-UM001A-EN-P - March 2009

Chapter 8 Troubleshooting

Ethernet Connection

This section provides tips on how to isolate Ethernet problems.

• Check the status indicators at the Ethernet connector.

Green indicates a communication link and should be ON.

Amber indicates data activity and should be flashing. Verify that

there is a connection to the hub.

• Check the cable connections and quality of cable. Check for

good connections and things such as quality, crimping, hub

connection, and uplink ports.

• Check the IP Address of the Built-in Ethernet Controller.

Enter Configuration mode and select Terminal

Settings>Networks and Communications>Network

Connections>Network Adapters.

If DHCP is enabled, the device expects a valid IP address to be

acquired within a several seconds after startup. The TCP/IP

protocol automatically assigns 169.254.nnn.nnn when it fails to

acquire an IP address from the server. In general, an IP address

that begins with 169 will not support a network connection.

A bad Ethernet connection and the absence of a valid IP address

are typically reported in a Communication error message box

with the Winsock critical error 10065 - No route to host.

• Check for conflicting IP addresses. If DHCP is not enabled,

make sure the IP address you specify is not in conflict with the

address of another device on the network.

• Check the device name of the terminal. Do not allow devices

on the network with same host name. Enter Configuration mode

and select Terminal Settings>Networks and Communications>

Network Connections>Device Name.

• Contact your Network Administrator to check peer or

server settings. The other side of the Ethernet connection may

also be a problem.

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