Setting
RFID channels – process output data
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8.3.1
Meaning of the command bits
Description
Meaning
Command code (CMDCUHF)
Enter the command code
Loop counter for rapid
processing (LCNT)
Loop counter for repeated processing of a command
0: Loop counter off
Memory area (DOM)
0: Kill password
1: EPC
2: TID
3: USER area
4: Access password
5: PC (size of EPC)
Start address (ADDR) in bytes
Enter the address where a command is to be sent (e.g. memory area of a tag)
Length (LEN) in bytes
Enter the length of the data to be read or written
Length of EPC (SOUID) in bytes
Inventory command:
0: Transfer the actual length (bytes) of the transferred EPC during an inventory
operation.
> 0: EPC completely output
Other commands:
Enter EPC size in bytes, if a particular tag is read, written or protected. The EPC
must be defined in the write data (start byte: 0). The function of the length of the
EPC depends on the command used.
0: No entry of an EPC for executing the command. Only one tag can be located in
the detection range of the read/write head.
> 0: EPC length of the tag to be read, written or protected if an EPC is present in
the write data.
Timeout (TOUT)
Time in ms in which one command is to be executed. If a command is not
executed within the entered time, the device outputs an error message.
0: No timeout, command stays active until the first tag was read.
1: Command is executed once (if there is already a tag in the detection range)
> 1…65535: Time in ms
Inventory: Command active for the entire specified time
Read fragment no. (RFN)
If the data to be read exceeds the size of the read data memory, the data is
divided in max. 256 fragments. The fragments are numbered consecutively from
1…255. From fragment number 256 numbering starts again at 1. The sending of
a fragment is confirmed by the device if the read fragment number appears in
the process input data. After the confirmation the next fragment is read.
0: No fragmentation
In Idle mode the size of fragments is stated. With a read command the number of
the fragments containing data is stated.
Write fragment no. (WFN)
If the data to be written exceeds the size of the write data memory, the data is
divided in max. 256 fragments. The fragments are numbered consecutively from
1…255. From fragment number 256 numbering starts again at 1.
The sending of a fragment is confirmed by the device if the write fragment
number appears in the process input data. After the confirmation the next
fragment is written.
0: No fragmentation
In Idle mode the size of fragments is stated. With a write command the number
of the fragments is stated that contain data.
Write data
User-defined write data or entry of an EPC to select a specific tag for the com-
mand execution (if the
Length of EPC (SOUID)
command parameter is greater
than 0).
Summary of Contents for TN-UHF AUS-CDS Series
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