Transponder
5.2 Memory configuration of the transponders
ASCII protocol for RF200
40 Operating Manual, 11/2016, C79000-G8976-C329-04
Depending on the manufacturer of the transponder chip, the memory configuration of an ISO
transponder consists of varying sizes of user memory.
The typical sizes are 112 bytes, 256 bytes, 992 bytes EEPROM or 2000 bytes FRAM. Each
ISO transponder chip has an 8-byte long unique serial number (UID, read only). This UID is
transferred as an 8-byte value by a read command to address FFF0 with a length of 8.
Note
Special feature of the NXP transponder
The NXP chip has the quirk of NOT responding to bad commands. Here there is no error
message, and the command behaves as if the transponder was not in the antenna field.
Note
Special feature of the Fujitsu transponder
The following restriction applies
to the "Get Multiple Block Status" command: A maximum of
64 blocks can be read (in other words, "BlockNumber" is max. 39 hex) and the block number
must be divisible by 8.
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