Keep Alive Frame; Reply Frame To A Register Value Request In A Downlink Frame; Data Frame - ADEUNIS ARF8190BA Guide Utilisateur

LoRaWAN 863-870 ANALOG - Guide utilisateur / User guide version V2.0.1

4.1.4 Keep Alive frame

This frame (0x30) is transmitted only in the event mode at the frequency defined by register 300.
0 1
Code Status
0x30 Cf Status
FR
0x30 0x42
Description of the frame:
• Byte 2: Type of the sensor on channel A. Configured by the user (register 320).
• Bytes 3 to 5: Value measured on channel A.
• If the type of sensor is 0-10V: The value is expressed in µV
EN
• If the type of sensor is 4-20mA: The value is expressed in nA
• Byte 6: Type of the sensor on channel B. Configured by the user (register 322).
• If the type of sensor is 0-10V: The value is expressed in µV
• If the type of sensor is 4-20mA: The value is expressed in nA
• Bytes 7 to 9: Value measured on channel B.
In the example in grey this gives:
• Byte 2=0x02: register 320, channel A configured for a 4-20mA sensor
• Bytes 3 to 5=0x0C3500=800,000 in decimal i.e. A value measured on channel A of: 800,000,x10=8,000,000nA i.e. 8mA
• Byte 6=0x01: register 322, channel B configured for a 0-10V sensor
• Bytes 7 to 9=0x4C4B40=5,000,000 in decimal i.e. a value measured on channel B of: 5,000,000 µV i.e. 5V

4.1.5 Reply frame to a register value request in a downlink frame

Following reception of a downlink frame with the code 0x40, the frame 0x31 is transmitted.
It contains all the values of the registers requested in the downlink frame 0x40.
• Frame (0x40) sent to the product (downlink) :
0 1
Code
0x40 CONF ID1
The CONF IDX (8bits) fields represent the index of the registers to be sent. The corresponding register is 300 + CONF IDX value.
• Response frame (0x31) from the product:
0 1
Code Status
0x31 Cf. Status
In this example: CONF ID1 is a 2-byte register, CONF ID2 a 1-byte register and CONF ID3 a 2-byte register.
If an error is detected in the request, the returned 0x31 frame will be empty.

4.1.6 Data Frame

This frame (0x42) contains the values measured on the different sensors
0 1
Code Status
0x42 Cf Status
0x42 0x42
2 3 4
Sensor Value read on the channel A sensor
type
0x01 0x0C3500
2 3 4
PAYLOAD
CONF ID2 CONF ID3 X
2 3 4
VALUE1 VALUE1 VALUE2
2 3 4
S320 Value read on the channel A sensor
0x02 0x0C3500
5 6
PAYLOAD
Sensor
type
0x01
5 ...
X X
5 ...
PAYLOAD
VALUE3 VALUE3
5 6
PAYLOAD
S322
0x01
7 8 9
Value read on the channel B sensor
0x4C4B40
n
CONF IDn
11
X
7 8 9
Value read on the channel B sensor
0x4C4B40
10
X
10
X
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