Siemens SIMATIC Ident - Page 115

Setting parameters for blocks
3.6 Transponder addressing
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04
115
System
Addressing
16-bit hexadecimal number
Start address
End address
0xFF00
0xFF13
R/W memory (FRAM)
Start address
End address
0x0000
0xFEFC
ID-Nr.: (fixed-coded; can only be output as a whole)
Start address
Length
0xFFF0
0x0008
RF300: General notes on the meaning of the OTP memory
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.