53
Ethernet/IP Connection Problems —
Use the
following methods to troubleshoot:
UNIT IS POINT-TO-POINT CONNECTED TO A PC —
Ensure controller is powered on prior to configuration and
check Ethernet connection and PC Network Interface Card
(NIC).
NOTE: In addition to the following procedure, it may be nec-
essary to check the Ethernet connection and/or configure the
PC network board.
In Network Settings, open Local Area Connection Proper-
ties. Select Internet Protocol and click Properties. See Fig. 69.
The Internet Protocol Properties window is displayed.
• If no IP address is configured in the General and Alterna-
tive Configuration tabs, the unit IP address must be con-
figured to 169.254.xxx.xxx. Modify the unit IP address
and then restart the system.
• If the PC has a fixed IP address configured in one of the
two tabs (General and Alternative Configuration), the IP
address of the PC and the unit IP address must have the
system and sub-system fields in common. The last part
of the IP address is the host number and must be unique
on the sub-system. For example: Unit address —
172.30.101.11 and PC address — 172.30.101.182. In this
example, 172.30 corresponds to the network, and 101
corresponds to the sub-system. Carry out the necessary
modifications and try to access the unit again.
In the case of a problem, open a Windows command win-
dow (Start, Execute, type
cmd
and press Enter), then type the
command
ping
, followed by the unit IP address. In the exam-
ple shown in Fig. 70, the PC receives four positive responses
(replies).
In the example shown in Fig. 71, the PC receives four nega-
tive responses (request timed out).
If the PC receives four negative responses, check the inter-
net browser parameters to determine if a proxy server or an au-
tomatic configuration script has been configured. If this is the
case:
• Deselect the proxy server or the configuration script and
restart the browser,
• Or refer to the section Java Application Configuration
(page 54).
Try to access the unit again. If the PC still does not receive a
response from the unit, restart the unit. Contact your system ad-
ministrator.
UNIT IS CONNECTED TO THE LOCAL NETWORK —
The unit is connected to the local network by an uncrossed
cable, and the unit is energized. Open a Windows command
window (Start, Execute, type
cmd
and press Enter), then type
the command
ping
, followed by the unit IP address.
If the responses are positive (see Fig. 70), the internet
browser configuration is faulty. Check the system parameters
of the internet browser to determine if a proxy server or an
automatic configuration script has been configured (Tools
Internet Options
Connections
System Parameters). See
S
ELECT
a30-5898
Fig. 69 — Local Area Connection Properties
Fig. 70 — Ping — Positive Replies
Fig. 71 — Ping — Negative Responses
Fig. 72 — Local Area Network Settings
LEGEND
1
—
Automatic configuration script
2
—
Proxy server
3
—
Advanced proxy configuration