ADEUNIS RF - WMBUS GPRS GATEWAY USER GUIDE V2.5.1
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6.1.3 Compr encryption
Both option can be activated for file. The file will used both extension : .gz + .aes
Example :
0999208001A_140402_011821.gp2.aes.gz
6.2. Decryption file
6.2.1 File format
When the FTP server connection is established, the gateway sends a. GP2 file
This file consists of information concentrated by the gateway since the last connection :
Filename
0999 + Gateway serial number_YYMMDD_HHMMSS.GP2
Example :
0999200099e_130513_120103.GP2
--> this file comes from AMR Gateway 2000099e
--> this file has been created on May 13th, 2013 at 12h01mn03
6.2.2 Hexadecimal format
Example :
22
13 11 07 15 42 56
b5
19 44
30 4c 07 00 00 00 00 00 a1 61 3f 03 13 97 87 73 98 4f 04 03 41 9f e9 86 22 13 11 07
15 42 56 6c 19
6.2.3 First part
Start byte and frame date/time
Start byte : frame length :
0x22
Date and time
Then from the second to the seventh byte : year, month, day, hour, min., sec.
YEAR.MONTH.DAY.HOUR.MIN.SEC
Example :
13 11 07 15 42 56
for a frame received November, 7th 2013 at 15h42mn56s
6.2.4 Second part
The next byte is the RSSI level :
0xB5
This value is coded in two’s complement on 8 bits
Hexadecimal Value
Binary Value
Inverse binary value Add +1
Relative Decimal Value
dBm Value
0xB5
1100 0101
0011 1010
0011 1011
59
-59 dBm
6.2.5 Third part
WMBUS frame length and frame type 44
In the given frame example, you’ll find :
0x19 0x44
--> frame length : 0x19
--> frame type : 0x44
