CBM America CBM-262 user manual Serial Interface, Specifications, Pin No

Models: CBM-262

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6

Chapter 6 Interfaces

Serial Interface

Specifications

Transmission Method Start-Stop Synchronous Full Duplex Communications

 

 

Signal Level

RS-232C

 

 

 

 

 

 

 

 

 

 

 

Baud Rate

2400, 4800, 9600, 19200

 

 

 

 

 

 

 

 

 

 

 

 

Data Length

7 or 8 bits

 

 

 

 

 

 

 

 

 

 

 

Start Bit

1 bit

 

 

 

 

 

 

 

 

 

 

 

 

Stop Bit

 

Receiving 1 bit; Transmitting

2 bits or more

 

 

 

 

 

 

 

 

 

 

 

Parity

 

Even, Odd, No Parity

 

 

 

 

 

 

 

 

 

 

Connector

Printer Side Compatible with DDK 17LE-13250-27

 

 

 

 

 

 

 

 

Signal Lines and Pin Arrangement

 

 

 

 

 

 

 

 

 

 

13

 

 

 

 

1

 

25

 

 

 

14

 

 

 

 

 

 

 

 

Pin No.

Signal Name

Direction

X-ON/X-OFF

 

DTR/DSR

 

1

 

F.GND

 

Connects the Host CPU

 

 

 

 

 

and printer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sends transmission data

 

 

 

2

 

TXD

OUT

and X-ON/X-OFF

 

Not used.

 

 

signals to the Host CPU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

from the printer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transmission data from

 

 

 

3

 

RXD

IN

the Host CPU to the

 

 

 

 

 

 

 

 

printer.

 

 

 

4

 

RTS

OUT

Pulls up the signal to

 

 

 

 

 

 

 

 

+10V at 3.3k ohms.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data are sent when the

 

6

 

DSR

IN

Not used.

 

status information send

 

 

 

 

 

 

 

 

signal is “HIGH.”

 

7

 

S.GND

 

 

 

 

 

20

 

DTR

OUT

Always HIGH.

 

LOW when Busy.

 

 

 

HIGH when Ready.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

 

INIT

IN(*1)

Printer's Reset signal.

 

 

IN indicates a signal from the Host to the printer. OUT indicates a signal from the printer to the Host.

*1 25pin, INIT is HIGH or the TTL-HIGH level of input (+2V~+15V) .

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Page 42
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CBM America CBM-262 user manual Serial Interface, Specifications, Pin No