Citizen Systems CBM920II user manual Serial Interface, TTL , Cmos

6.SERIAL INTERFACE

6.1Specifications

(1)Synchronization: Asynchronous

(2)Baud rate

1200, 2400, 4800, 9600, 19200 Baud/sec (User selection)

(3)Word configuration

•Start bit: 1 bit

•Data bit: 7 bits or 8 bits (User selection)

•Parity bit: odd, even, no parity (User selection)

•Stop bit: 1 bit or more

(4)Data I/O signal RxD, TxD (RE-232C)

(5)Control signal

DTR, PE, RESET, FAULT

(6)Signal polarity

RS-232C		TTL , CMOS
•	Mark = Logic “1” (−3 V to −12V)	•	H level = Logic “1”
•	Space = Logic “0” (+3 V to +12 V)	•	L level = Logic “0”

(7)Power cable +5V, GND and FG

(8)Compatible connector:

HIF3F-20PA-2.54DS(71) (Hirose Electric compatible) HIF3C-20D-2.54C (Hirose Electric compatible)

6.2Connector Pin Assignment

Pin			Signal Name	Pin	Signal Name
1 to 8	N.C (Unconnection)			15	GND (For interface)
9	RxD			16	FRAME GND (FG)
10	TxD			17	+5V (For circuit control)
11	DTR			18	GND (For circuit control)
12	PE			19	+5V (For mechanism drive)
13				20	GND (For mechanism drive)
		FAULT
14
		RESET
	19				1
	20				2

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