6
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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