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6.2.5 Interface pin assig nment

Serial and parallel interface pin assignment tables are shown below.

n Serial interface pi n 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 w it h 2 KW]
5 CTS Input RS-232C data transmission on
computer permitted
6 NC - No conne ction
7 S.GND - Signal ground
8 NC - No conne ction
9 NC - No conne ction
10 NC - No connec tion
11 NC - No connectio n
12 NC - No connec tion
13 S.GND - Signal ground
14 +5VDC - +5 V (max. load 100 mA)
15 NC - No connec tion
16 NC - No connec tion
17 NC - No connec tion
18 NC - No connec tion
19 NC - No connec tion
20 DTR Output RS-232C data transmission (busy) on
printer permitted
21 NC - No connec tion
22 NC - No connec tion
23 NC - No connec tion
24 NC - No connec tion
25 NC - No connec tion