35
INTERFACE
G300/G330 USER MANUAL
APPENDIX
Pinout Description
Serial Port
：
Baud rate 9600, no parity, 8 data bits, 1 stop bit, XON/XOFF
protocol and RTS/CTS
RS232 Housing(9-pin to 9-pin)
-
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
Computer
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
+5V, max 500mA
TXD
RXD
N/C
GND
RTS
CTS
RTS
N/C
Printer
DSTB is sent to the printer, BUSY to the host computer.
Parallel cable compatible with IBM computers.
2-9
10
11
12
13
14
15
16
17
18
19-30
31
32
33
34-35
Data 0-7
/Acknowledge
Busy
/Paper empty
/Select
/Auto-Linefeed
N/C
Signal Gnd
Chasis Gnd
+5V,max 500mA
Signal Gnd
/Initialize
/Error
Signal Ground
N/C
host
printer
printer
printer
printer
host / printer
host
host / printer
printer
****The total current to the serial port may not exceed 500mA.
USB
Parallel Port
Factory option
