Citizen CMP-10 manual Serial Interface, Pin No Signal Direction Function Pin No. of Cable

5.SERIAL INTERFACE

5.1Specifications

(1) Data transfer system Asynchronous, half duplex

(2)Baud rates

1200, 2400, 4800, 9600, 19200, 57600, 115200 bps (Selectable by command)

(3)Serial data configuration Start bit: 1 bit

Data bit: 8 bits Fixed

Parity bit: No parity

Stop bit: 1 bit

(4)Signal polarity RS-232C

•Mark = logic “1” (–3V ~ –12V)

•Space = logic “0” (+3V ~ +12V)

(5)Receiving data (RD signal) RS-232C

•Mark = logic “1” (–3V ~ –12V)

•Space = logic “0” (+3V ~ +12V)

(6)Transmission control (TD signal)

DC1 code (11H) X-ON: Data reception is available

DC3 code (13H) X-OFF: Data reception is not available

5.2. Connector Pin Configuration

Pin No.	Signal	Direction		Function		Pin No. of Cable
3	TXD	Output	Transferred data		No. 2 pin of D-Sub 9 pins
6	+5V	—			No connection
7	RXD	Input	Received data		No. 3 pin of D-Sub 9 pin
11	RTS	Input	Auto Turn On		No. 7 pin of D-Sub 9 pin
14	—	—	Communication mode setting		No. 5 pin of D-Sub 9 pin
			(InfraRed or Serial)
15	GND	—			No. 5 pin of D-Sub 9 pin
Connector
Printer side:		Connector used on StarTac (Motorola)
PC side		9 pin D-SUB
Cable

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