Citizen Systems CLP-6401 - Manual (Page 74)

6-11
6.2.5 Interface 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 K
W]
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