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80mm Series Receipt Printer Interface Introduction and Description

2026-01-12

80mm seriesReceipt printerInterface Introduction and Description

I. Serial Interface of the Receipt Printer

The serial interface of the 80mm series printer adopts the RS-232 standard, with a communication baud rate of 115200bps, 9600bps, 19200bps or 38400bps selectable (adjustable via DIP switch), 8 data bits, no parity, 1 stop bit, and supports RTS/CTS and XON/XOFF handshake protocols.

The pin functions of the serial interface for the receipt printer are defined as follows:

Diagram showing the connection between the serial interface of the receipt printer and the serial interface of the POS host:

II. Parallel Interface of the Receipt Printer

The 80mm series printers feature a 25-pin parallel interface socket, supporting 8-bit parallel transmission.BUSY/nAck handshake protocol.

The pin functions of the printer parallel interface socket are defined as follows:

III. Ethernet Interface of the Receipt Printer

The Ethernet interface socket of the 80mm series receipt printer is a standard RJ45-8P, supporting 10M/100M networks.And the transmission speed is adaptive.

IV. Cash drawer interface for receipt printers

The cash drawer of the receipt printer uses the RJ-11 standard, a 6-pin socket, and outputs a DC 24V/1A power signal to drive the cash drawer.Procedure: Simply insert the RJ-11 connector of the cash drawer into the cash drawer interface to open the cash drawer via the printer.

The pin functions of the cash drawer interface of the receipt printer are defined as follows: