Download Citizen BD2-2890 User`s manual

BD2-2880/2890 User’s Manual
7. SERIAL INTERFACE
7.1 Specifications
(1) Data transfer system: Asynchronous
(2) Baud rates
1200, 2400, 4800, 9600, 19200 bps (Selectable by user)
(3) Configuration of one word
Start bit
:
Data bit
:
Parity bit
:
Stop bit
:
1 bit
8 bits Fixed
Odd/Even or No parity (Selectable by user)
1 bit or more
(4) Signal polarity
RS-232C
• Mark
• Space
logic “ 1” (–3V ~ –12V)
logic “ 0” (+3V ~ +12V)
=
=
(5) Receiving data (RD signal)
RS-232C
• Mark
=
1
• Space
=
0
(6) Receiving control (DTR signal)
RS-232C
• Mark
:
Data transfer is not available
• Space
:
Data transfer is available
(7) Transmission control (TD signal)
DC1 code (11H) X-ON :
Data reception is available
DC3 code (13H) X-OFF :
Data reception is not available
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