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February 2010
Radio Encryption
Select “None”, “WEP (64-bit)”, “WEP (128-bit)”,
“WPA-PSK (TKIP)”, or “WPA-PSK (AES)” security encryption of
the wireless data. The default setting is “None”.
Encryption Keys 1 to 4 These are the keys used to encrypt radio data to protect data from
unwanted eavesdroppers when WEP Encryption is selected. These
keys should be the same for all WI-MOD-E units in the same
system.
One of the four keys may be selected as the default key, and is used
to encrypt transmitted messages from the configured unit. A WI-
MOD-E can receive and decrypt a message from a module that has a
different default key index as long as each module has the same key
configured at the same index.
WEP keys must be entered as pairs of hexadecimal digits separated
by colons. Hexadecimal digits are in the range 0..9 and A..F.
64bit WEP requires 10 Hexadecimal digits, and 128bit WEP
requires 26 Hexadecimal digits. For example, 12:AB:EF:00:56. for
64bit encryption, and 12:AB:EF:00:56:15:6B:E4:30:C8:05:F0:8D
for 128bit encryption
Encryption keys must not be all zeros, i.e. 00:00:00:00:00
Passphrase
When WPA Encryption is selected, 128bit Encryption keys are
internally generated based on the Passphrase and System Address
(SSID). The Passphrase must be between 8 and 63 characters in
length, and the Passphrase must be the same for all WI-MOD-E
units in the same system.
Save and Reboot.
Save settings to non-volatile memory, and reboot WI-MOD-E.
3.6
Ethernet Data
All Ethernet devices are uniquely identified by a MAC Address that identifies the hardware device.
These addresses are factory-set and are six bytes in size and are expressed in hexadecimal in the
form
xx:xx:xx:xx:xx:xx
Ethernet messages can be addressed to a single device (a point-to-point message) or can be directed
towards multiple destinations by using Multicast addresses and Broadcast addresses. The broadcast
address is used to send data to all devices. The broadcast address is FF:FF:FF:FF:FF:FF.
Multicast addresses are used to direct data at a set of devices. Multicast addresses may be
recognized as they are always have the least significant bit of the first byte of the MAC Address set.
For example, 01:00:5E:00:00:00 is a multicast address, 01:80:C2:00:00:00 is also a multicast
address.
