OBID
®
classic-pro
Manual
ID CPR30.xx
FEIG ELECTRONIC GmbH
Page 11 of 126
H01114-0e-ID-B.docx
2.2. ISO Host Commands
The ISO Host Commands provide the exchange of data between a host and Transponders via the
Reader as long as the Transponder remains in the detection range of the Reader.
NOTICE:
During the writing of data on a Transponder, it must be ensured that the Transponder is lo-
cated within the detection range of the Reader during the entire process. If the Transponder
is removed from detection range of the Reader during a writing process, this will cause a
loss of data.
The Reader distinguishes between the following different addressing modes:
Addressed mode:
Before reading or writing data in addressed mode, the UID of the Transponder has to be
known. This is executed by sending the command “
“. If a Transpond-
er is located within the detection range of the Reader at that time, it answers with its UID.
For all following read- / write orders the Transponder must be addressed with its correct
UID.
The following chart will show the necessary steps for the communication with a Transpond-
er in addressed mode:
Host (Terminal / PC / ....)
Reader
Inventory
to get the UID
Transponder in antenna field?
Yes
No
status /
number of Trans-
ponders / UID
status =
no Transponder
read data from Transponder with UID
Transponder with
correct UID in antenna field?
Yes
No
status /
Transponder read
data
status =
no Transponder
in Reader field
write data to Transponder with UID
Transponder with
correct UID in antenna field?
Yes
No
OK status
status =
no Transponder
in Reader field
