Compuprint 10200 Programmer Manual Manual de usuario descargar pdf (Pagina 226)

Interfaces

222

The following table lists the RS-232/C serial interface signals:

Signal

Name

Number

Local

Connect.

Source

Remote

Connect.

Source

ISO/CC

ITT

Circuit

RS-

232/C

Circuit

Description

FRAME

GROUND

1 - - 101 AA This printer is shipped with pin 1 connected to

the frame ground (protective ground).

TXD 2 Printer Printer 103 BA Transmitted Data Signal (an output from

printer). A MARK condition is held during IDLE

communication state. An indeterminate state is

present when printer is powered off.

RXD 3 Host Data Set 104 BB Received data signal (an input to printer).

RTS 4 Printer Printer 105 CA Request to Send Signal (an output from

printer).Active HIGH level signal. It is HIGH until

the printer is powered off, then an indeterminate

state is present .

CTS 5 Data Set 106 CB Active HIGH level signal indicates that the host

or data set is ready to receive data from the

printer.

DSR 6 Data Set 107 CC Active HIGH level signal. Indicates that the

host or data set is ready to be connected to the

printer and is ready for data transfer.

DCD 8 Data Set 109 CF Active HIGH level signal. Indicates that the host

is transmitting or the data set is receiving the

Data Carrier signal..

RTS 11 Printer 120 SCA Functionally equivalent to the DTR signal.

DTR 20 Printer Printer 108 CD Data Terminal Ready. Normally HIGH (ON).

Indicates that the printer is ready to initiate a

connection.

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