Справочник Пользователя для Citizen Systems CBM-230/231

CBM-230/231 User’s Manual

CITIZEN

26

7 SERIAL INTERFACE

  

7.1 Specifications

  (1) Synchronizing system : Asynchronous
  

(2) Baud rate : 150, 300, 600, 1,200, 2,400, 4,800, 9,600, 19,200 bps (Selected by the user)    

  (3) Word Length
      Start bit   : 1 bit
      Data bit    : 7 bits or 8 bits (Selected by the user)
      Parity bit 

: Odd/even parity or no parity (Selected by the user)

      Stop bit    : 1 bit or more
  
  (4) Signal polarity
      RS-232C

l  Mark  = Logic "1" (-3 V to -12 V)
l  Space = Logic "0" (+3 V to +12 V)

  

  (5) Receive data (RD signal)
      RS-232C

l  Mark 

= 1

l  Space  = 0

  
  (6) Data receiving control (DTR signal)
      RS-232C

l  Mark  : Data transfer not possible
l  Space   : Data transfer possible

  

  (7) Data transmission control (TD signal)
      DC1 code(11H) X-ON

: Data reception possible

      DC3 code(13H) X-OFF 

: Data reception not possible