User manual
  X K 3 1 9 0C 602   
IV. Printer interface 
1. Parallel printer interface adopts the standard 25-pin D type jack socket. Figure 3-6 shows 
the  meaning  of each  pin.  The indicator  can  be  connected  to  printer  by  standard  parallel 
interface printer cable. The 13th pin is +5V output which can be used to connect micro printer 
with peak current below 2A. 
Figure 3-6 Printer Interface 
2. Serial printer interface uses the communication interface RS-232 (1). See RS-232 (1) in 
(Fig. 3-7) for the meaning of each pin. Busy means the printer is busy. 
Setting of printer
  Correctly set the parameters 7, 8, and 9 (see table 4-3 in chapter four) of SET 1according 
to the printer model and printing language (Chinese or English). If the printer not listed in the 
table is to be used, try to select the model with similar printing command format with those listed 
in the table. 
Selection of micro printer 
 It is suggested to adopt the mirco printer with Chinese library, available for printing at least 16 
English charanters in 1 line. When micro printer without Chinese character database is used, only 
English printing mode is available for selection. 
  The micro printer shall support the following commands: 
  Switch to Chinese printing: ESC 8 n (0x1b, 0x38, n) 
  Reverse printing: ESC C n (0x1b, 0x63, n) 
 Our company can select the micro printer for customers, which has been verified in the C602. 
11
10 9 8 7 6 5 412
2
3 113
23
22 21 20 19 18 17 1624
14
1525
BUSY               D7      D6      D5      D4      D3     D2        D1      D0      ST
ÐźŵØ
+5V 
Signal ground 










