turck TBEN-L4-4RFID-8DXP, Инструкция по эксплуатации

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Setting
RFID channels – parameter data
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8.1.5 UHF applications – setting Continuous presence sensing mode
„
Set adaptions to the Presence sensing behavior in the DTM.
„
Optional: Set the grouping of the EPCs via the Start address parameter:
0: Grouping inactive
1: Grouping active (same EPC is not recorded again, only the counter incremented in the
header)
„ Execute the Continuous presence sensing mode command.
a The read/write head is switched to Presence sensing mode and sends all received data to
the interface as soon as at least one tag is located in the detection range.
a The data received from the read/write head is stored in the FIFO memory of the interface.
„ Send the Idle command (0x0000) in order to then read data from the buffer of the inter-
face.
NOTE
The Continuous presence sensing mode command also stays active after the Idle
command is sent.
„ To pass on data from the FIFO memory of the interface to the controller, execute the Get
data from buffer (0x0011) command. The length of the data must be less than or equal
to the value of the available data bytes (BYFI). Depending on the length of the data, it is
no longer used for grouping.
NOTE
If Grouping is active: Only read data from the buffer if the number of available bytes
is stable. If stable data was fetched, the command can be terminated by means of a
reset since the grouping is no longer based on the fetched data and therefore old
EPCs can be detected again.
„
Do not carry out the reset until the data has been successfully read from the buffer.
„ To end Continuous presence sensing mode and clear the FIFO memory of the interface
send the
Reset command (0x0800).