Anadex DP-9000 User Manual

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2~9.2

SERIAL

BIT,

SERIAL

CHARACTER

-

RS-232-C:

This

inter-

face

system

conforms

to

EIA

standard

RS-232-C.

In

utilizing.

this

convention,

the

user

must

recognize

that

the

printer

is

the

DTE

(Data

Terminal

Equipment)

and

configure

the

inter-

connection

between

the

DTE

and

the

DCE

(Data

Communications

Equipment),

which

may

be

a modem

or

Data

terminal

(CRT)

or

a

computer

or

other

source.

The

EIA

RS-232-C

communications

standard

is

a

two-way

communications

standard,

and

therefore

a

signal

which

is

defined

as

an

output

at

one

end

may

be

an

input

at

the

other

end.

For

example:

TD

(TRANSMIT DATA),

which

is

assigned

to

pin

2

of

the

connector,

is

the

data

output

line

of

the

DCE,

but

is

RD

(RECEIVE

DATA)

at

the

DTE

and

is

assigned

to

pin

3

of

the

DTE

connector.

Therefore,

unless

provision

is

available

in

the

data

source

interface

to

switch

these

signal

lines,

the

signal

lines

may

require

cross-connection

from

pin

3

to

pin

2

in

the

cable.

This

principle

applies

to

all

signals

in

the

RS-232-C

interface.

NOTE

Those

users

who

are

not

thoroughly

knowledge-

able

in

RS-232-C

serial

interface

communica-

tion

should

refer

to

troubleshooting

in

Section

IV

for

guidance

in

establishing

com-

munication.

The

serial

connector

for

both

RS-232-C

and

current

loop

inter-

face

is

the

25

pin

connector

at

the

rear

left

of

the

printer.

Figure

2-7

shows

the

pin

connections

and

internal

strapping

for

the

serial

connector

J-2,

and

Figure

2-8

shows

the

timing

relationship

of

the

data

and

status

signals.

The

following

paragraphs

describe

each

of

the

input/output

signals:

EIA

DATA-IN

INPUT

This

is

the

asynchronous

input

data

line.

Data

format

is

established

by

switch

con-

figuration

by

the

operator.

The

format

is

one

start

bit,

7

or

8

data

bit

word,

0

to

1

parity

bit,

and

I

or

2

stop

bits.

Bit

length

is

determined

by

the

Baud

rate

and

is

nominally:

I

sec.

t

Baud

Rate

Signal

levels

for

this

interface

are

based

upon

conventional

SPACE

and

MARK

levels.

The

voltage

level

for

a SPACE

is

+ 3 Vdc

to

+

25

Vdc,

and

voltage

level

for

a

MARK

is

- 3 Vdc

to

-

25

Vdc.

2-17

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Anadex DP-9000 Specifications

General

Brand	Anadex
Model	DP-9000
Category	Printer
Language	English