Citizen Systems iDP-3421, iDP-3420, iDP-3423 user manual Serial Interface, Specifications

iDP-3420/3421/3423 User’s Manual

10. SERIAL INTERFACE

10.1Specifications

(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

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