OBID i-scan
®
System-Manual
ID ISC.MR200
FEIG ELECTRONIC GmbH
Page 15 of 144
H40801-5e-ID-B.doc
1.4. Notification Mode
The Notification Mode is an extended option of the Buffered Read Mode: queued Transponder data
are notified automatically and asynchronously to a host with the
10.3. [0x22] Read Buffer
response
protocol. The destination address and the notification conditions can be set in
3.27. CFG49: Notificati-
on Channel
configuration block. In general, the notification channel
cannot
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
10.5. [0x32] Clear Data Buffer
command is not
necessary. As an option, this acknowledgement can be enabled to synchronize the notifications with
the host to prevent notification overflow in the host application.
The notification message format depends on settings for the read mode in
3.10. CFG11 Read Mode
Data
and
3.11. CFG12: Read Mode - Filter
as well as settings for the notification trigger in
3.27.
CFG49: Notification Channel
.
An additional option of the Notification Mode is the Keepalive message, which can be sent periodically
to the host. The Keepalive message transports valuable information about the reader hardware and
antenna tuning status. Keepalive messages are always not acknowledged by the host. The Keepalive
message should not be mistake with the keepalive option (s. CFG41/CFG43) of a LAN/WLAN con-
nection initiated by a host.
Note:
•
The MR200-Reader does support only one TCP/IP – Connection at the same time.
•
The reader hardware version FE556/4 is necessary for using the Notification Mode.