6.2.5Interface pin assignment

Serial and parallel interface pin assignment tables are shown below.

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 K)

 

 

 

 

5

CTS

Input

RS-232C data transmission on computer

 

 

 

enabled

6

NC

Not connected

 

 

 

 

7

S.GND

Signal ground

 

 

 

 

8

NC

Not connected

 

 

 

 

9

NC

Not connected

 

 

 

 

10

NC

Not connected

 

 

 

 

11

NC

Not connected

 

 

 

 

12

NC

Not connected

 

 

 

 

13

S.GND

Signal ground

 

 

 

 

14

+5VDC

+5 V (max. load 100 mA)

 

 

 

 

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 data transmission on printer

 

 

 

enabled (Busy)

21

NC

Not connected

 

 

 

 

22

NC

Not connected

 

 

 

 

23

NC

Not connected

 

 

 

 

24

NC

Not connected

 

 

 

 

25

NC

Not connected

 

 

 

 

6-9

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Image 67
Citizen CLP-2001 user manual Interface pin assignment