7
2-2-1. Interface Connector
- 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
- 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
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