Network Registers - ADEUNIS WMBUS MODBUS MASTER Guide Utilisateur

WMBUS MODBUS MASTER - Guide utilisateur / User guide version V1.0.0

3.4.2 Network registers

The list of registers below allows you to change the behaviour of the product application. This list is accessible in Provider mode following
execution of the ATT63 Provider command.
These registers must be handled with caution because they could cause problems of communication or of non-compliance with the legislation in
force.
Registre Description
200 WMBUS channel
201 Frame format
221 AES mode
222 AES key (first part –
MSB)
223 AES key (second part –
MID MSB)
224 AES key (third part –
MID LSB)
225 AES key (fourth part –
LSB)
227 WMBUS fields
Version and Device Type
NOTE 1 :
The choice of the WMBUS channel (register 200) allows a selection of the WMBUS mode: T, C, S or R for the 868 frequency.
The couple Channel (S200) and Format (S201) must respect the following table:
Channel
10
11
12
13
14
15
16
17
Codage
Decimal Default: 24
Min/max: 4 to 12
Unit : none
See Note 1
Decimal Default: 1
Values:
• 0 : A-format
• 1 : B-format (minimize frame duration)
• 2 : 'Universal' (TX=B, RX=A+B)
Hexadecimal Default : 0x0000 (no AES)
Values:
• 0x0000 : no AES
• 0x0001 : AES128 with CBC. Using the key defined in registers S222 to S225
Note : Encryption of the set of bytes of the payload. Encryption is done in blocks
of 16 bytes. If a block is less than 16 bytes, the buffer is completed with 0xFF
before the AES calculation. There will be in this case transmission of additional
bytes.
Default: 0
Key coded on 32 characters. Each of the 4 registers contains 8 characters.
Eg:
Hexadecimal AES-KEY = 01020304050607080910111213141516
• S222 = 01020304
• S223= 05060708
• S224 = 09101112
• S225 = 13141516
Hexadecimal Default: 0x0056
Min/Max: 0x0000 to 0xFFFF
The MSB is the Device Type and the LSB is the Version.
Eg: S227=0x0056 :
- Device Type = 0x00
- Version = 0x56
These 2 fields can be modified by the user.
Format
FA
FA
FA
FA
FA
FA
FA
FA
Détails
Resulted mode
S2, S1M
S1
T1, T2
T2
R2 /C0
R2 /C1
R2 /C2
R2 /C3
Associated frequency
868,300 MHz
868,300 MHz
868,950 MHz
868,300 MHz
868,030 MHz
868,090 MHz
868,150 MHz
868,210 MHz
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