Siemens SIMATIC Ident Function Manual page 100

Configuring the instructions
4.8 Transponder addressing
Address mapping of the OTP memory on RF300 transponders
EEPROM memory (R/W) and OTP memory are only available once in the transponders.
The following table shows the mapping of addresses on the transponder.
Data can be read via the EEPROM address or the OTP address.
Table 4- 90 Address mapping of OTP memory
Note
Enabling write protection
Write access to addresses starting at "0xFF80" to "0xFF93" activates the write protection
(OTP function) on the EEPROM user memory. This operation is not reversible. Activation
of write protection must always take place in ascending order without gaps, starting at
address "0xFF80".
100
EEPROM memory (R/W)
Address
0xFF00
0xFF01
0xFF02
0xFF03
0xFF04
0xFF05
0xFF06
0xFF07
0xFF08
0xFF09
0xFF0A
0xFF0B
0xFF0C
0xFF0D
0xFF0E
0xFF0F
0xFF10
0xFF11
0xFF12
0xFF13
Length Address
1 .. 20
1 .. 19
1 .. 18
1 .. 17
1 .. 16
1 .. 15
1 .. 14
1 .. 13
1 .. 12
1 .. 11
1 .. 10
1 .. 9
1 .. 8
1 .. 7
1 .. 6
1 .. 5
1 .. 4
1 .. 3
1 .. 2
1
Ident profile, Add-on instruction for Rockwell systems
Function Manual, 07/2020, C79000-G8976-C410-04
OPT memory (written once)
Length
0xFF80 4, 8, 12, 16, 20
0xFF84 4, 8, 12, 16
0xFF88 4, 8, 12
0xFF8C
0xFF90
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4, 8
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4
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