Feig Electronic ID ISC.MU02.02-AD, Manual

Page: 12 / 96

OBID i-scan
®
UHF Manual ID ISC.MU02.02
FEIG ELECTRONIC GmbH Page 12 of 96 H90701-3e-ID-B
5.2. Host Commands
The 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.
NOTE:
During the writing of data on a Transponder, it must be ensured that the Transponder is
located within the detection range of the Reader during the entire process. If the Tran-
sponder is removed from detection range of the Reader during a writing process, this will
cause a loss of data.
The Reader to Transponder addressing mode:
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 protocol “
10.1.1. [0x01] Inventory 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 Tran-
sponder in addressed mode:
Host (Terminal / PC / ....) Reader
Inventory
to get the UID
→
Transponder in antenna field ?
Yes No
←
status /
number of Tran-
sponders / 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
←