Centronics Parallel Interface
PIN SIGNAL I/O DESCRIPTION
1 STROBE- Input Synchronize signal Data received
2~9 DATA0~7 Input/Output Data bit Transmitted 0~7
10 ACK- Output Data receiving completed.
11
BUSY Output Impossible to print of data receiving.
12 PE Output Paper empty
13 SELECT Output Printer status for ON/OFF line
14 AUTO FEED- Input Paper auto feed signal
15 GROUND - System ground
16 GROUND - System ground
17 NC -
18 LOGIC-H - +5V
19~30 GROUND - System ground
31 INIT- Input Initialize
32 ERROR- Output Printer error
33 GROUND - System ground
34 NC -
35 +5V - +5V
36 SELLECT IN- Input Printer select signal
Ethernet Interface
PIN SIGNAL I/O
1 Data Out + Output Data +
2 Data Out - Output Data -
3 GND Ground
4 Data IN + Input Data +
5 Data IN - Input Data -
6 N.C
7 N.C
8 N.C
2-2-1. Interface Connector
<D-SUB 25 Female Serial> <Centronics Parallel>
<USB “B” Type> <Ethernet>
<USB COMBO> <Wi-fi>
Serial Interface
PIN SIGNAL I/O DESCRIPTION
2 TXD Output Printer transmit data line RS-232C level
3 RXD Input Printer receive data line RS-232C level
4, 20 DTR Output Printer handshake to host line RS-232C level
6 DSR Input Data Send Ready
1, 7 GND - System Ground
USB Interface
PIN SIGNAL I/O DESCRIPTION
1 +5V - +5V
2 DATA- - Printer transmit data line
3 DATA+ - Printer transmit data line
4 GND - System Ground
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