Citizen Systems iDP3421 Benutzerhandbuch
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