Citizen Systems iDP3420 - Manual (Page 47)

iDP3420/3421/3423 User’s Manual
31 CITIZEN
10. SERIAL INTERFACE
10.1 Specifications
(1) Synchronous system: Asynchronous
(2) Baud rate: 150, 300, 600, 1200, 2400, 4800, 9600, or 19200 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 (RXD signal)
RS-232C
•
Mark = 1
•
Space = 0
(6) Reception control (DTR signal)
RS-232C
•
Mark : Data transfer disabled
•
Space : Data transfer enabled