73 of 112
14.3.1 Mode
2
3
1
4
5
6
Fig. 35: Basic reading: mode
①
Synchronous
allows the facility to switch the carrier off during the idle times, saving power
This mode is intended for applications in which the requirements for timing are not very
demanding. The inventory of the tags is performed across all the antennas that ar
e configur
ed.
Once all the tags in the field have been r
ead on the last antenna, data are sent to the PC. The PC
automatically retriggers the inventory of the tags.
②
Asynchronous
is intended for applications for which maximum performance is required
The reader starts the inventory as quickly as possible, and at the end of an inventory it does not
deliver every tag that was read to the PC, but only those that have recently appear
ed in the field
or left it. This way, the time required for communication between the reader and the client is
minimised.
The timing of when a tag was reliably r
ead in the field and when the tag no longer appears in the
field can be defined mor
e precisely using parameters.
►
For more details of the
ObservedThresholdCnt
and
ObservedTimeoutCnt
parameters, refer to the
Con-
figur
ational manual reader
.
③
Listen for event
deactivates or activates waiting for the result of the command executed by an external trigger
and shows the result in
Ⓐ
in
Fig. 30
When deactivated, there is no waiting process and it is possible to start the reading process at
any time.
④
Start
starts the reading
⑤
Stop
stops the reading
⑥
Clear
deletes the reading results from the table on the left (
Ⓐ
in
Fig.
34, p. 72
)
14.3.2 Starting and Stopping the Reading
✔ All the settings have been applied and the mode selected.
►
Click
Start
(
④ in
Fig. 35
) to start the reading.
►
Click
Stop
(
⑤
) to stop the reading.
►
Click
Clear
(
⑥
) to remove all tag entries from the table (
Ⓐ in
Fig.
34, p. 72
).
