September 2011
19
V1.44
Copyright © 2011 Adept Systems, Inc. and Control Network Solutions Ltd All Rights Reserved.
2.2. Establishing a Connection (Ethernet or WiFi)
Once the IP connection (WiFi or Ethernet) is setup, power up the eNodeIV device. It takes about
60 seconds for the eNodeIV device to boot up. On an Ethernet device Boot-up is completed
when the yellow link light flashes off once and then back on solid and the green traffic light
starts flashing.
On a WiFi device, boot-up has completed when the green traffic light starts flashing.
Depending on the type of connection, the yellow WiFi link light may or may not flash.
In infrastructure mode the yellow light is on solid.
In Ad Hoc mode is flashes 5 seconds on, and 1 second off.
If no connection, it flashes one second on, and one second off.
2.2.1. Ping to Verify
For either Ethernet of WiFi, to verify that the IP connection has been made send an IP ping to
the eNodeIV device at its default IP host address (10.0.2.40). In Linux, Windows 2k+, or Mac OS
X a ping can be sent from the command line as follows:
ping 10.0.2.40
Then type
enter
or
return
. This will ping 4 times.
ping -t 10.0.2.40
This will ping continuously until a break control-c is typed.
If there is no response, double check all network connections and cables and device setup.
Make sure you can ping out by pinging some other computer on your network. Once you can
successfully ping the eNodeIV device, establish a web connection from a web browser window
as follows:
http://10.0.2.40
Then type
enter
or
return
.
Note:
Sometimes when configuring multiple routers in quick succession using the same
computer, IP communications will fail temporarily for the next router. The reason for this is that
the IP stack on the computer caches the MAC address of each device in an ARP table, indexed
to the IP address. The first router that responds on 10.0.2.40 will have its MAC address
associated with 10.0.2.40 in the ARP table. Because we ship every router with the same default
address, the first time each router is accessed it is on the same IP address. The next router that
uses 10.0.2.40 will have a different MAC address and when the computer tries to communicate
with it, the computer may use a stale cached MAC address instead. To clear the ARP table entry
for 10.0.2.40, in Windows, Linux, or OS X, enter on the command line (or DOS prompt):
arp -d 10.0.2.40
