Adeunis RF AMR Series, User Manual

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AMR SENSORS- Mode d’emploi / User guide version V1.2
38 Page of 41
5. Radio frames
The AMR Sensor transmits raw information from sensors using the Wireless M-BUS protocol.
In this chapter, you will find information enabling the Wireless M-Bus frame to be decoded, as well as the location in the information frame
concerning the sensor or sensors associated with the AMR Sensors unit.
NB : AMR Sensors does not either interpret or decode information from the sensor. Decoding into a value and/or unit is the responsibility of the
user once the radio frame is received via its receiver.
The decoding explained below, working from the following example:
• An AMR Sensors product to which a sensor is connected. The frames transmitted are data frames and log frames.
5.1. Data frame
Example: FF 0C 44 46 06 00 00 00 10 03 19 7A 01 00 00 00 2F 2F 03 FD 3A CE 3C 06 BF
5.1.1 Format
SOF L-Field C-Field M-Field A-Field
CI-
Field
Data-Field
RSSI
Short-Header
FF 0C 44 46 06 00 00 00 10 03 19 7A 01 00 00 00
2F
2F
03 FD 3A CE 3C 06 BF
Start data from Transmitter Taille de tr
ame
Control Manufacturer ID SN Number & sensor number Version Device type Code de tr
ame
Access Number Status Signature Check encryption DIF Primary VIF Secondary VIF Value
5.1.2 Identification of the sensor
An AMR Sensors product can handle two sensors. The AMR Sensors unit will therefore send a frame for each of these sensors. The sensor (1 or
2) is identified via the A-Field in the frame :
If sensor N°1 If sensor N°2
A-Field A-Field
00 00 00
1
0 03
19
00 00 00
2
0
03 19
SN Number & sensor number Version Device type SN Number & sensor number Version Device type
5.1.3 Decoding the frame
Type Description Valeur Signification
Frame start SOF 0xFF Start of the frame
Frame size L-Field 0x0C Data field length
Control C-Field 0x44 SEND/NO REPLY
Manufacturer ID M-Field
0x4606 BCD coding. Read 06 46 (ARF)