Bourgogne ET Grasset SAS VEGRDE2 用户手册
27-07-2002
Vegas Long Range Read/Write Device
Page 31 (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
3.4.5. WRITE
CRYPTO
GetSnr
SelectSnr
MutualAuthent
Write
MutualAuthent
Write
(Crypto)
HaltSelected
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.
3.5.
Commands for Configuration and Personalization
of the Read/Write Device
of the Read/Write Device
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
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).
• 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).