CH Tech EM405D - Manual (Page 21)

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always starting with 00-20-4A identifying the manufacturer of the device. The last three
parts of the number are unique to each unit.
Example: 00-20-4A-11-68-4C
2) Create an entry in the host computer’s ARP table using the intended temporary IP address
and the hardware address of the EM405D found in step 1. To perform this action on a
Windows-based host, open the command prompt and type (the IP address can be any
available address on your network and xx-xx-xx is the last three numbers in the unit’s
MAC address):
arp
–s 192.168.1.7 00-20-4a-xx-xx-xx
View the ARP table to verify that the entry was successful by typing the following:
arp –a
The ARP commands might be slightly different on non Windows based hosts.
Note: On a Windows 95 machine, the ARP command will not work unless at least one IP
address is in the ARP table. To view the ARP table, type: arp
–a. If no IP addresses
are found in the table, you must ping an existing IP address on the network. If the ping is
successful, the IP address should be automatically added to the ARP table.
3) Open a Telnet connection to port 1 of the intended temporary IP address. To perform this
action type the following at the command prompt:
telnet 192.168.1.7 1
The connection will fail but will cause the EM05D to temporarily change its IP address to
the one specified.
4) Use the Telnet interface or the wed-based interface to open a session to the module using
the new temporary IP address. At this point the IP address can be configured to a more
permanent setting. The module will retain the temporary IP address until a new
configuration is applied or the module is powered-off.
4.2.7 Performing the Configuration – Wireless Ethernet (Wi-Fi)
The wireless version of the EM405D provides a web-based interface to perform network and
device configuration. A Telnet interface is not supported. To use the web-based interface, the
user must know the carrier’s IP address and the user must be able to connect to the module via a
wireless access point, router, or another wireless device capable of communicating directly with
other wireless devices (ad-hoc). If the EM405D’s configuration is not known, it can be reset to
known defaults as described in section 4.2.7.2.