Siemens SIMATIC Ident Function Manual page 99

Table 4- 89 Address space of the RF300 transponder (RF3xxT)
User memory
20 bytes EEPROM
8 KB FRAM/EEPROM
32 KB FRAM/EEPROM
64 KB FRAM/EEPROM
General notes on the meaning of the OTP memory for RF300 transponders
RF300 transponders and ISO transponders have a memory area that can be protected
against overwriting. This memory area is called OTP. The following 5 block addresses are
available for activating the OTP function:
• 0xFF80
• 0xFF84
• 0xFF88
• 0xFF8C
• 0xFF90
A write command to this block address with a valid length (4, 8, 12, 16, 20 depending on
the block address) protects the written data from subsequent overwriting.
Note
Using the OTP area only in static mode
Only use the OTP area in static mode.
Note
Use of the OTP area is not reversible
If you use the OPT area, you cannot undo this assignment, because the OPT area can
only be written to once.
Ident profile, Add-on instruction for Rockwell systems
Function Manual, 07/2020, C79000-G8976-C410-04
Transponder type
RF320T
RF340T / RF360T
RF330T / RF340T / RF350T /
RF360T / RF370T / RF380T
RF370T
Configuring the instructions
4.8 Transponder addressing
Address area (hex, 16-bit)
0xFF00 ... 0xFF13
FRAM: 0x0000 ... 0x1FFC
EEPROM: 0xFF00 ... 0xFF13
FRAM: 0x0000 ... 0x7FFC
EEPROM: 0xFF00 ... 0xFF13
FRAM: 0x0000 ... 0xFEFC
EEPROM: 0xFF00 ... 0xFF13
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