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3.4
General reading instructions
3.4.1
GT – get tag
The instruction yT executes one reading and sends back the transponder code of a transponder or the No
Read error code (e.g. „FFFFFFFFFF“ oder „XXXXXXXXXX“).
Input format:
GT
<CR>
Output (example):
0420212E5F
<CR>
3.4.2
MD – mode of operation
There a two modes of operation available. It is possible, that the reader reads constantly or triggered by
an instruction.
Input format:
MD
<SP>
parameter
<CR>
Output (example):
2
<CR>
Parameter:
PARAMETER
FUNCTION
0
constant reading mode
2
single reading mode
3.4.3
Basic data exchange process
The master has to send an software command to start an read or write process of the reader. After doing
all the necessary work at the readers site, the result of the reading or writing process or an failure code
is sent back to the master.
If there is used an read/write transponder, only the serial number of the transponder will be read if the
basic read command „yet Tag“ („yT <CR>“) is applied.
The data exchange of the whole memory can only be done, if the reader is set to the Mode 2 ( „selective
Read (RD) “ and „write (WD)“).
