LoRaWAN 915 FTD – User guide version 1.0
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3.3.4
RX2 window configuration
These registers are locked. In order to be unlocked, the following command must be sent:
ATT63 ROOT<CR>
The second RX window, RX2 can be configured in a similar way as the channels, with a minor difference: a specific value of DR
is enforced.
It can be accessed through the following register:
Register Number
Description
Default Value
Range / Values
Comment
257
RX2 configuration
1
US table
This register can contain 3 types of values:
Register value
Description
0
Channel deactivated
1
LoRaWAN default configuration
Other
User defined, will be taken into account ONLY IF THERE IS NO CF LIST. If the device is
configured in OTAA and a CF list is transmitted by the network during OTAA, the CF list
values will prevail
By default, RX2 contains the LoRaWAN parameters. If the register value is different from 0 or 1, RX2 has a custom
configuration.
For custom configuration, the register contains 8
ASCII
characters, coded as such:
C7
C6
C5
C4
C3
C2
C1
C0
Channel frequency in MHz x100 (Example: 902000 for 902.000MHz)
DR
Channel frequency range is: [902000, 927900]
With the SF (C1 and C0) coded in the following way:
DR value
Description
08
Downlink - SF12 - 500 kHz
09
Downlink – SF11 - 500 kHz
10
Downlink – SF10 - 500 kHz
11
Downlink – SF9 - 500 kHz
12
Downlink - SF8 - 500 kHz
13
Downlink – SF7 - 500 kHz
Examples:
5.
Set RX2 frequency at 902MHz / DR11, the user should send:
ATS257=90200011<CR>