Citizen Systems CLP-6401 user manual Interface pin assignment

6.2.5Interface pin assignment

Serial and parallel interface pin assignment tables are shown below.

n Serial interface pin assignment table

Pin No.	Signal	Input/Output	Description
1	F.GND	-	Frame ground
2	TXD	Output	RS-232C output data
3	RXD	Input	RS-232C input data
4	RTS	-	RS-232C (pull up to +5V with 2 KW]
5	CTS	Input	RS-232C data transmission on
			computer permitted
6	NC	-	No connection
7	S.GND	-	Signal ground
8	NC	-	No connection
9	NC	-	No connection
10	NC	-	No connection
11	NC	-	No connection
12	NC	-	No connection
13	S.GND	-	Signal ground
14	+5VDC	-	+5 V (max. load 100 mA)
15	NC	-	No connection
16	NC	-	No connection
17	NC	-	No connection
18	NC	-	No connection
19	NC	-	No connection
20	DTR	Output	RS-232C data transmission (busy) on
			printer permitted
21	NC	-	No connection
22	NC	-	No connection
23	NC	-	No connection
24	NC	-	No connection
25	NC	-	No connection

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