turck TBEN-L4-4RFID-8DXP, Instructions For Use Manual, Page: 192 / 242

Operation
Using HF bus mode
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9.6 Using HF bus mode
9.6.1 Executing commands in HF bus mode
„ Set the parameter data.
„
Select the HF bus mode operating mode.
„
Activate the connected read/write heads.
„
Set the input data.
„ Specify the command code.
„ Set the start address for the command.
„ Set the required read/write head address.
„ Send the command to the read/write head.
9.6.2 Replacing bus-capable read/write heads
„ Remove the faulty read/write head.
„ Connect the new read/write head with the default address 68 (delivered with …/C53).
„ If multiple read/write heads are being replaced: Replace the read/write heads in the or-
der in which they were connected.
a Addresses are allocated in ascending order to the read/write heads in the order in which
the heads were connected. The lowest address is automatically assigned to the next
read/write head with the default address 68 that is connected.
a If the LED on the read/write head is permanently lit, this indicates that the addressing is
complete.
9.6.3 HF Continuous bus mode – data query and speed
All activated read/write heads are triggered within a bypass time + wait time. The set command
(e.g. Inventory, Read, Write) in Continuous mode is processed within this time. Only one read/
write head sends data to the RFID interface during command execution of all activated read/
write heads. The other read/write heads store the read data for a later query. When the same
read/write head detects a new tag, the data in the buffer of a read/write head is overwritten if it
was not yet sent to the RFID interface.
NOTE
The repeated reading of the same tag is time-triggered. The grouping in the process
output data can be activated in order to prevent the storing of the same UID mul-
tiple times.
The read/write heads do not detect any tags between two queries and when sending data to
the RFID interface. The following table describes the required wait times:
Command Wait time
Inventory 15 ms
Read 25 ms
Write 35 ms
The default bypass time in HF bus mode is 48 ms.