Citizen CLP-7401, CLP-7001 Interface pin assignment, Pin No Signal Input/Output Description

Appendixes

2 Specifications

• Interface Specifications

5. Interface pin assignment

The serial and parallel pin assignment tables are shown below.

￿	Serial interface pin assignment table
	Pin No.	Signal	Input/Output	Description
	1	F.GND	Output	Frame ground
	2	TXD	Output	RS-232C output data
	3	RXD	Input	RS-232C input data
	4	RTS	Output	RS-232C (pull up to +5V with 2 KΩ]
	5	CTS	Input	RS-232C data transmission on
				computer enabled
	6	NC	−	Not connected
	7	S.GND	Output	Signal ground
	8	NC	−	Not connected
	9	NC	−	Not connected
	10	NC	−	Not connected
	11	NC	−	Not connected
	12	NC	−	Not connected
	13	L.GND	Output	Control system ground
	14	VCCs	Output	Control system power +5 V
				(max. service current 0.05A)
	15	NC	−	Not connected
	16	NC	−	Not connected
	17	NC	−	Not connected
	18	NC	−	Not connected
	19	NC	−	Not connected
	20	DTR	Output	RS-232C printer data receiving
				enabled
	21	NC	−	Not connected
	22	NC	−	Not connected
	23	NC	−	Not connected
	24	NC	−	Not connected
	25	NC	−	Not connected

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