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LoRaWAN 915 FTD – User guide version 1.0
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3.3.5
LoRa Options
These registers are locked. In order to be unlocked, the following command must be sent:
ATT63 ROOT<CR>
The LoRa Options can be configured through register S220.
Register Number
Description
Default Value
Range / Values
Comment
220
LoRa Options
0x00000001
This register contains 4 bytes, coded as such:
Byte 1
(reserved)
Byte 2
(reserved)
Byte 3
Byte 4
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Byte 4
Bit N°
Default value
Description
0
1
0 =ADR bit disabled
1 = ADR bit enabled
1
0
0 = Standard Rx windows timing
1 = Extend Rx windows timing for TEST
HOUSE certification
2
0
0 = Duty cycle management OFF
1 = Duty cycle management ON
3
0
0 = Standard device
1 = Device emulate Gateway Tx On Rx2
(Class C test)
<5:4>
0
2 : Class C Device
Other : Class A Device
6
0
0 : Default channel enable
1 : Default channel disable
Band 868 only. NA for 915 band
7
0
0 : Automatic Rf config enable
1 : Automatic Rf config disable (Manual)
Stack 4.3 only. NA if stack 4.1
8
0
0 : Join Auto repetition disable
1 : Join Auto repetition enable
Stack 4.3 only. NA if stack 4.1
Note on ADR:
If ADR is activated, the device will have no control over the SF as this parameter may be changed by
the network (see 3.3.3). If ADR is deactivated, the SF value is the one contained in register S201.
Note on ADRACKReq:
When the device has transmitted multiple frames but hasn’t received any downlink (whether it’s a
generic downlink or an ACQ) from the server, enabling ADRACKReq will allow the device to try and
“force” a downlink from the server when a certain amount of transmitted frames is reached. That way it
can ensure that it is still connected to the network.
If an ADRACKReq is sent but the device still receives no answer, it will increase its SF value in order
to increase the radio link budget. The goal is to re-establish a potentially lost connection between device
and server.
3.3.6
UpLink port
These registers are unlocked
The LoRa UL port can be changed through register 383:
Register Number
Description
Default Value
Range / Values
Comment
383
UL port
1
1-223