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13. Anhang E
13.1 BIN f ile Format
Periodically, the FTP-GPRS module read the data stored in the central DFR and create a BIN file that is uploa-
ded to the FTP server. This BIN file contains the data of all devices read by radio.
File name:
<IMEI>_<FileTime>.BIN
For example:
355632003678233_1236585660786.BIN
The IMEI is a 15 digits number that represents the International Mobile Equipment Identifier of the FTP-GPRS
module. The FileTime is the local time of the file creation (in milliseconds from midnight, January 1, 1970). For
further details on IMEI and FileTime see in the table below.
The BIN file is a binary file composed of:
• a fixed header of 16 bytes
• a variable length DeviceData structure repeated for each device
• a fixed trailer of 7 bytes
The following table describes the internal data structure of a BIN file:
Sect
Field Name
IMEI
FileTime
PrimaryAddr
IdNumber
TelegramType
TelegramsLength
TelegramsData
DeviceListCount
DeviceReadCount
Error
CRC
MSB: Most Significant Byte
LSB: Least Significant Byte
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Size [byte] First byte
8
MSB
8
MSB
2
MSB
4
MSB
0..99'999'999 M-Bus identification number.
2
MSB
2
MSB
Telegrams
-
Length
2
MSB
2
MSB
1
-
2
LSB
Range
International Mobile Equipment Identifier. This number
0..10
-1
15
is unique for each FTPGPRS module.
Local time of the file creation. Number of milliseconds
0..10
-1
13
from midnight, January 1,1970 (1970-01-01T00:00).
M-Bus primary address. Always 0 for the central DFZ,
0..255
the radio devices don't have a primary address.
0..2
Type of the telegrams. Always 1 (M-Bus) for the central DFZ.
0..32'767
Length (in bytes) of the following TelegramsData
Concatenated telegrams of the device.
0..32'767
Number of devices in the list.
0..32'767
Number of read devices.
0: No error (DeviceReadCount = Device-ListCount);
0; 1
1: some devices are not read
(DeviceReadCount < DeviceListCount)
CRC16 of this file content according to RFC1662.
Description
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