Sensor SMT-200 Operation And Technical Manual page 68

Section 4 RF/ID Tag Reader
4.6 Internal storage
With the SMT-200 and a RFID tag reader you can read unique, 40 bits, tags. The user can link a
variable string number to it (1 <= String number < 100.000). The maximum amount of tags is 120.000.
Different tags can have the same string number, so the string number does not have to be unique.
When a 'new' tag is read it is stored in an unsorted binary file. The unsorted binary file will be
downloaded to the PC with a file transfer. This file will be appended to the binary file 'Tagxxxx.bin' and
converted to the ASCII file 'Tagxxxx.txt'. xxxx represents the serial number of the SMT-200. Both files
are stored in the subdirectory \SMT200\TAGS. The ASCII file is stored in TAB format, so it can easily
be opened by a spreadsheet program or text editor.
From the Docking Station program you can select an ASCII file to upload to the SMT-200. This file is
converted to binary format, sorted and checked on errors (double or too high tag ID's) before it will be
uploaded. The sorted, 'cleaned' list is stored under the name 'TagSo.txt' in the \SMT200 directory.
With a Down/Upload, the unsorted tag file in the SMT-200 is downloaded and appended to the file
'Tagxxxx.bin' first (as described before). The belonging ASCII file is stored as 'Tag.txt' in the
\SMT200\TAGS directory. After this, the unsorted file is removed from the SMT-200 and the converted
file is uploaded and overwrites the sorted file in the SMT-200.
The file 'Tag.txt' can be renamed by the user if the tags must be saved.
With an Upload the unsorted tag file will be removed from the SMT-200 and the sorted file will be
replaced.
If later new tags are read, a new unsorted binary file is made to store these.
58
Io
SMT-200 Operations and Technical Manual 2.00/R1
SENSOR