UHF-Reader
Manual
ID ISC.ANT.U500/270 - DM
FEIG ELECTRONIC GmbH
Page 14 of 117
H71011-0e-ID-B.docx
5.3. Notification Mode
The Notification Mode is an extended option of the Buffered Read Mode: queued Transponder
data and optionally Input / Status events are notified automatically and asynchronously to a host
with the
12. Protocols for Buffered Read Mode and Notification Mode
tination address and the notification conditions can be set in
7.21. CFG49: Notification Channel
configuration block. In general, the notification channel can be used simultaneously with the host
interface.
In difference to the Buffered Read Mode procedure, a notification is normally not acknowledged by
the host. Thus, the deletion of the transferred data with the
12.6. [0x32] Clear Data Buffer
com-
mand is not necessary. As an option, the acknowledgement can be enabled to synchronize the
notifications with the host to prevent notification overflow in the host application.
The notification message format depends and settings for the read mode in
as well as settings for the notification trigger in7.21. CFG49: Notification Chan-
An additional option of the Notification Mode is the Keepalive message, which can be sent periodi-
cally to the host. The Keepalive message transports valuable information about the reader hard-
ware and antenna tuning status. Keepalive messages are always never acknowledged by the host.
The Keepalive message should not be mistaken with the keepalive option of a LAN connection
initiated by a host.
