Bourgogne ET Grasset SAS VEGRDE2 Manual De Usuario

27-07-2002 

 

Vegas Long Range Read/Write Device  

Page 31 (48) 

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Vegrde3/EG 

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

 

 

 

 
Note: If you want to read the serial number once again after having transmitted the command 
Select, you should do this by reading Page 0. In case you want to read the serial number with the 
command GetSnr, you have to transmit the command GetSnr twice as the mode is switched. 
 
To substantially increase the data reliability we strictly recommend to read the previously 
written data (read after write). 
 
When using the C-Library for programming please read the Appendix (Headerfile Listing) for 
detailed information. 
 

This group of commands deals with a special area of the read/write device EEPROM. Some 
security features are provided in order to avoid forbidden or unintentional execution of these 
commands. 
 
•  The commands are available only if the read/write device is in a special mode 

(Key-Init Mode). 

•  To enter the Key-Init Mode a password is needed. 
•  The checksum in the serial protocol differs form the one used for other commands (BCC). 
•  In order to change data in the EEPROM the user has to know the old values. 
 
For further information please see Chapter 5 (Personalization).