Setting
RFID channels — process output data
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07.00 | 2022/09 | 105
8.3.1 Meaning of the command bits
Description Meaning
Command code (CMDC) Entering of the command code
Loop counter for rapid pro-
cessing (LCNT)
Loop counter for repeated processing of a command
0: Loop counter off
Memory area (DOM) — usable
for UHF applications only (with
HF applications, the setting has
no effect)
0: Kill password
1: EPC
2: TID
3: USER area
4: Access password
5: PC (defines the response length of the EPC)
Start address (ADDR) Specification of the address in bytes from which a command is to be executed in
the memory of the tag. Can be used as an alternative to activating the grouping.
Length (LEN) Entering the length of the data to be read or written
Length of UID/EPC (SOUID) in
bytes
Inventory command:
0: The actual length (bytes) of the transferred UID or EPC is transferred with an
inventory.
> 0 in HF applications:
n 8: Read out or write 8 bytes UID
n 1…7: Read out or write an abbreviated UID
n > 8: Fault signal
-1: NEXT mode (only available in HF single-tag applications): A HF tag is always
only read, written or protected if the UID is different from the UID of the last read
or written tag.
> 0 in UHF applications: EPC is output in full.
Other commands (e.g. read or write):
The UID or EPC size should be entered in bytes if a particular tag is to be read,
written or protected. The UID or EPC must be defined in the write data (start
byte: 0). The function of the UID/EPC length depends on the command used.
0: No entry of a UID/EPC for executing the command. Only one tag can be
located in the detection range of the read/write device.
> 0: EPC length of the tag that is to be read, written or protected if an EPC is
present in the write data.
-1: NEXT mode (only available in HF single-tag applications): A tag is always only
read, written or protected if the UID or EPC is different from the UID or EPC of the
last read or written tag.
Timeout (TOUT) Time in ms in which a command is to be executed. If a command is not executed
within the specified time, the device outputs a fault signal.
0 (HF applications): No timeout, command stays active until it is executed
0 (UHF applications): 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
HF inventory: Command is executed once in the specified time (exception:
Continuous Mode)
UHF inventory: Command remains active for the entire specified time
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