Operation
HF applications — using Continuous Mode
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9.3 Using commands with a loop counter function
NOTE
The loop counter is only supported for fast execution commands.
Setting the command: Enter the command code.
Set the loop counter to 1.
a The command was successfully executed if the same command code appears in the pro-
cess input data as in the process output data. The RFID data is stored in the buffer of the
interface.
Repeating the command: Increase the loop counter in the output data by 1.
a The command was successfully executed if the same loop counter value appears in the
process input data as in the process output data. The RFID data is stored in the buffer of
the interface.
Setting a new command: Enter the new command code and set the loop counter to 0.
9.4 HF applications — using Continuous Mode
In Continuous Mode (HF) the read/write head can read or write up to 64 bytes (see the table for
user data areas of the HF tags).
The following parameters must be set in Continuous Mode:
n Tag type
n Command in Continuous Mode
n Length in Continuous Mode
n Start address
n Optional: Start address in the process output data for activating the grouping
With read or write command: Enter the tag type. Automatic tag detection is not possible.
Select the command in Continuous Mode (CCM): Inventory, read, tag info and write are
possible.
Enter the length in Continuous Mode (LCM): Enter the length of the data to be read in
bytes. The length must be a multiple of the block size of the tag used. The addressing of
an odd byte number is not possible.
Enter the start address for the command in Continuous Mode (ACM). The start address
must be a multiple of the block size of the tag used. The addressing of an odd byte
number is not possible.
For a write command enter the data to be written in the write data area.
Execute the Continuous Mode command.
a The set command is preloaded and carried out for all active read/write heads as soon as a
tag is in the field.
The data received from the read/write head is queried cyclically and stored in the FIFO
memory of the interface.
Execute the Idle command (0x0000).
To pass on data from the FIFO memory of the interface to the controller, execute the
Read buffer (Cont. mode) command (0x0011). The length of the data must equal the
value of the available data bytes (BYFI).
To stop Continuous Mode, execute the Stop Continuous Mode command (0x0012).
or
To stop Continuous Mode and clear the FIFO memory of the interface, send the Reset
command (0x0800).
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