Serial interface – Citizen Systems iDP-460 Benutzerhandbuch
Seite 34
iDP-460 User’s Manual
34
CITIZEN
7. SERIAL INTERFACE
7.1 Specifications
(1) Synchronous system: Asynchronous
(2) Baud rate: 150, 300, 600, 1,200, 2,400, 4,800, 9,600, or 19,200 bps (User selectable)
(3) Configuration of one word
•Start bit
: 1 bit
•Data bits : 7 or 8 bits (User selectable)
•Parity bit : Odd, even, or none (User selectable)
•Stop bit
: 1 bit or more
(4) Signal polarity
RS-232C
•Mark
= Logic "1" (-3 V to -12 V)
•Space
= Logic "0" (+3 V to +12 V)
(5) Received data (RD signal)
RS-232C
• Mark
= 1
• Space = 0
(6) Reception control (DTR signal)
RS-232C
•Mark
: Data transfer disabled
•Space
: Data transfer enabled
(7) Transmission control (TD signal)
•Status transmission
P-250
= Transmits "A"(41h)
P-900R = Transmits "H"(48h)
•Printer state transmission
Transmits the data indicating the 1-byte state. (See 10. PRINT CONTROL FUNCTIONS)