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Identification Manual ID ISC.MR102
FEIG ELECTRONIC GmbH Page 138 of 153 H01113-4e-ID-B.docx
9. Protocols for Notification Mode
Notification mode is only available if a TCP/IP interface is available.
9.1. The Notification Mode Procedure
By using Notification Mode the Reader itself reads data from every Transponder which is inside the
antenna field
and enables a connection to a host to send the queued data asynchronously. This
mode must be enabled in the 4.2. CFG1: Interface configuration block and configured in 4.9.
CFG11 Read Mode Data configuration block. The settings for the Read Mode defines the notifica-
tion information sent to the host.
Only one command is necessary to send sampled Transponder data sets. The figure below illus-
trates the Notification Mode procedure:
Reader

Host
[0x22]
Read Buffer Response
Notification data from the Reader to the Host
After successful send process, the Reader deletes
transferred data sets from the internal table
The reader sends notifications as fast as possible, if the notification trigger is set to continuously or
a very short cycle time in time-triggered mode is defined. To prevent a notification overflow in a
host application the acknowledgement option can be set. In this case the notification must be
acknowledged by the host with a response protocol to synchronize the notification process with the
host application. The figure below illustrates this procedure:
Reader

Host
[0x22]
Read Buffer Response
Notification data from the Reader to the Host

max. 5000ms
Reader

Host
[0x32]
Clear Data Buffer
Command to the Reader
to delete the notified data sets from the internal table
The acknowledge protocol 9.3. [0x32] Clear Data Buffer must be in the space of 5 seconds. If no
acknowledge is received the Reader repeats the notification as it is configured.
Additional information about the capacity of the data buffer can be determined with the 9.2. [0x31]
Read Data Buffer Info command.
As an additional option Keepalive messages can be sent periodically to a host. Keepalive notifica-
tions are never acknowledged. The information sent by a Keepalive notification is identical with the
command
6.10. [0x6E] Reader Diagnostic with mode = 0x01.