Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.arcetri.astro.it/irlab/fasti/doc/fastitalk/slide9.html
Дата изменения: Thu Jul 28 18:23:48 2005
Дата индексирования: Sat Dec 22 10:18:07 2007
Кодировка:
Поисковые слова: п п п п п п п п п п п п п п п п п п п п
Fasti Talk Slide 9



Fasti - The internal Serial Bus


All the low speed communication inside Fasti are routed through a serial bus. This approach gives us the possibility to use a simple and widely accepted standard for internal communications, and to use only commercially available parts.

The bus chosen for the initial version of Fasti is the standard RS232 serial bus routed on ethernet. Though not so fast, and lacking the data integrity check, RS232 bus is so widely used to be the safest choice. The ethernet routing correct its biggest drawback: addressability.

The basic advantages of this approach are:

  • Nearly ubiquitous communication standard.
  • Easy to cable and to control.
  • Ethernet vector can utilize existing cabling.
  • Ethernet vector gives addressability: no more limits on port number.
  • Ethernet vector gives the possibility to manual access from outside for testing and debugging.