B&B Electronics Zlinx ZP Series - Manual (Page 50)

46 Manual Documentation Number: ZP24D-250RM-SR-2508
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ED (Energy Scan) Command
<Networking {Association}> The
ED command is used to send an
“Energy Detect Scan”. This
parameter determines the length
of scan on each channel. The
maximal energy on each channel
is returned and each value is
followed by a carriage return. An additional carriage return is sent at the end of the
command.
The values returned represent the detected energy level in units of -dBm. The actual
scan time on each channel is measured as Time = [(2 ^ ED PARAM) * 15.36] ms.
Note: Total scan time is this time multiplied by the number of channels to be scanned.
Also refer to the SD (Scan Duration) table. Use the SC (Scan Channel) command to
choose which channels to scan.
EE (AES Encryption Enable)
Command
<Networking {Security}> The EE
command is used to set/read the
parameter that disables/enables
128-bit AES encryption.
The Zlinx firmware uses the
802.15.4 Default Security protocol
and uses AES encryption with a
128-bit key. AES encryption
dictates that all modules in the
network use the same key and the
maximum RF packet size is 95
Bytes.
When encryption is enabled, the module will always use its 64-bit long address as the
source address for RF packets. This does not affect how the MY (Source Address),
DH (Destination Address High) and DL (Destination Address Low) parameters work
If MM (MAC Mode) > 0 and AP (API Enable) parameter > 0:
With encryption enabled and a 16-bit short address set, receiving modules will only be
able to issue RX (Receive) 64-bit indicators. This is not an issue when MM = 0.
If a module with a non-matching key detects RF data, but has an incorrect key: When
encryption is enabled, non-encrypted RF packets received will be rejected and will not
be sent out the UART.
Transparent Operation --> All RF packets are sent encrypted if the key is set.
API Operation --> Receive frames use an option bit to indicate that the packet was
encrypted.
AT Command: ATED
Parameter Range:0 - 6
Related Command: SD (Scan Duration), SC
(Scan Channel)
Minimum Firmware Version Required: v1.x80
AT Command: ATEE
Parameter Range:0 - 1
Parameter Configuration
0 Disabled
1 Enabled
Default Parameter Value:0
Related Commands: KY (Encryption Key), AP
(API Enable), MM (MAC Mode)
Minimum Firmware Version Required: v1.xA0