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Appendix A System Interface Description

A-2

1. Serial Interface RS-232C / RS-422

1.1 Interface Characteristics

Signal Description RS-232C Pin No. Direction

PG Protective Ground 1 -

TXD Transmit Data (from printer to host) 2 OUTPUT

RXD Receive Data (from host to printer) 3 INPUT

RTS Request to Send (printer is requesting data transfer from host) 4 OUTPUT

CTS Clear to Send (host is ready to receive data from printer) 5 INPUT

DSR Data Set Ready (host is requesting data transfer from printer, 6 INPUT

can not be used for flow control, internaly set to "1")

SG Signal Ground 7 -

DTR Data Terminal Ready (printer is ready to receive - see also on the 20 OUTPUT

following pages the data communication protocols for detail meaning

Signal Description RS-422 Pin No. Direction

PG Protective Ground 1 -

RDA Receive Data (from host to printer) 3 INPUT

SDA Send Data (from printer to host) 9 OUTPUT

SDB Not Send Data (from printer to host) 10 OUTPUT

RDB Not Receive Data (from host to printer) 18 INPUT

S Transmission rate: 600, 1200, 2400, 4800, 9600, 19200, or 38400 baud

S Parity: even, odd, or none

S Word length: 7, or 8 bits

S Number of stop bits: In receive mode the printer accepts 1, or 2 stop bits. The

printer transmits always two bits.

Transmission Protocols:

S DTR - Ready/Busy (only RS-232C)

S XON/XOFF

S XON/XOFF + DTR (only RS-232C)

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Output Solutions C I - 8 0 6 0 Manual de usuario Pagina 124