Epson RP-300, RP-310 user manual Interface Connector, Serial interface, USB interface

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2-2-1. Interface Connector
< D -SUB 25 Female Serial Port>	<D -SUB Centronics Parallel Port>

<4Pin “B ” Type USB Port>

- 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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Contents All specifications are subjected to change without notice RP-300Table of Contents Parts Identifications Setting Up the Printer UnpackingConnecting the Cables Interface Connector Serial interfaceUSB interface Cash Drawer Connector Centronics Parallel interfaceLoading the Roll Paper Page DIP Switch Setting Serial Interface SpecificationParallel Interface Specification ? Caution New settings take e ffect when you turn on the printer Control panel Error indicatingControl panel and other functions ButtonSelf Test Running the self testCompleted Reliability SpecificationsEnvironmental Requirments CertificationCommand List ESC @GS H Memo Memo Memo