Bourgogne ET Grasset SAS VEGRDE2 Manual De Usuario

27-07-2002 

 

Vegas Long Range Read/Write Device  

Page 43 (48) 

Confidentiality Level 1 

           

Vegrde3/EG 

Bourgogne et Grasset  -– ZI Beaune Savigny  -– 21200 Beaune  –  France  –  Tel. +33 380 26 26 26  –  Fax. +33 3 80 26 26 00 

 

 

 

 

 

 

HITAG VEGAS data carriers are delivered with the following configuration by Mikron: 
 

Serial Number: 

Read Only 

- 

fixed 

Key A, Key B: 

Write Only 

- 

can be changed 

Logdata: 

Read/Write 

- 

can be changed 

OTP Page: 

Read/Write 

- 

can be changed 

Blocks 2 - 7: 

Read/Write 

- 

can be changed 

Blocks 4 - 7: 

Public Access 

- 

can be changed 

 
According to that the OTP bytes display the pattern illustrated below: 
 
OTP Byte 0   

Bit 

7       Bit 

0

1 1 1 1 1 1 1 1 

OTP Byte 1   

Bit 

7       Bit 

0

0 

0 

1 1 0 1 1 1 

 
You cannot change Bits 5, 6, and 7 of OTP Byte 1 (gray background). If you attempt to write the 
configuration page with a bitmap that changes one of these three bits, the Write command will 
be executed without displaying an error message but the memory contents of OTP 1/Bit 5, OTP 
1/Bit 6, OTP 1/Bit 7 will remain unchanged.