IBM 3270, 3278 Operator's Manual

GA27-2890-4
File No. S360/S370/S3-09

Systems

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GA27-2890-4
File No. S360/S370/S3-09

IBM 3270
Information Display System

Systems

3278

Display Station

Operator's Guide

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Fifth

Edition

This

is

a reprint

Newsletters:
GN31-1259 (dated 14 November 1980)

GN31-1428 (dated 29 April 1983)

Changes are periodically made to the information herein; before using this publication, refer

latest

to the

Processors Bibliography. GC20-0001, for the editions that are applicable and current.

References in this publication to
intends to make these available in all countries in which

(February

of

GA27-2890-3 incorporating changes released in the following Technical

IBM System/360 Bibliography. GA22·6822 and the IBM System/370 and 4300

1984)

IBM

products, programs, or services do

IBM

operates.

not

imply that

IBM

Publications are not stocked at the address given below. Requests for copies
publications should be made
your locality.

A form for readers' comments has been provided
has been removed, address comments to
Road. Kingston. N.Y.
any way it believes appropriate without incurring any obligation to you.

12401.

to

your

IBM

IBM

representative or to the

IBM

may use

Corporation, Department 52Q. Neighborhood

or

distribute whatever information you supply in

© Copyright International Business Machines Corporation

IBM

branch office serving

at

the back of this publication.

1978,1979.1980

of

IBM

If

the form

Preface

This guide
IBM
or

to
Display Station is attached to a control unit
other than a 3274 or a 3276, some operations and/or indica­tors may be different from those described in this guide.
The operator should refer to the appropriate appendix for a
description

For
Unit, the 3276 Control Unit Display Station, the 3287

Printer, and the 3289 Line Printer, refer

pUblications:

•

•

•

•

For information about the setup
3276,3278,3287,

documents:

•

is

written for persons who will be operating the

3278 Display Station attached

a 3276 Coptrol Unit Display Station.

of

these differences.

information about the operation

IBM

3270 Information

Unit

Operator's

IBM

3270 Information

Unit

Display

IBM

3287 Printer

IBM

3289 Line Printer

IBM

3270 Information

Unit

Planning,

Station

Setup, and Customizing

Display

Guide,

GA23-0023

Display

Operator's

Operator's

Operator's

and 3289, refer

Display

to

System: 3274 Control

System: 3276 Control

Guide,

Guide,

of

the 3274

to

System: 3274

a 3274 Control Unit

If

your 3278

or

to

an adapter

of

the 3274 Control

to

the following

GA18-2040

GA27-3150

Guide,

GA27-3147

ModellC,

the following

Control

Guide,

GA27-2827

•

IBM

3270 Information

Unit

Display

GAl 8·2041

•

IBM

3274 Control

GA27·2855

•

IBM

3276 Control

GA18·2017

•

IBM

3278

•

IBM

3287 Printer Setup Instructions, GA27·3152

•

IBM

3289 Line Printer Setup Instructions, GA27-3140

The keyboards illustrated in this manual are U.S. and
Canadian French keyboards.
other keyboard languages, refer

Display

While
chooses those he will utilize and in what manner.
responsibility
operating procedures for the equipment.

Some

in

local
product availability.

System:

IBM

of

this manual may

IBM

Station

Display

Character

makes available many basic functions, the user

of

the user

the units, devices, options, and features described

marketing representative for information about

Display

Planning

Unit

ModellC

Unit

Display

System: 3276 Control

and Setup

Guide,

Setup Instructions,

Station Setup Instructions,

Station Setup Instructions, GA27-2838

For

information concerning

to

IBM

3270 Information

Set Reference, GA27-2837.

It

to

establish and maintain appropriate

not

be available in every locale. Ask your

is the

Preface

iii

Contents

Chapter
!-'irst Word s
Data
The

Chapter

3278
Introduction
3278

The

Cursor 2-15
Cursor Wrap 2-16
3278
Operator
Cleaning

Chapter
Introduction
Typewriter

Chapter

I.

Introduction

to

the

Operator

Processing 1-4

Data Processing System 1-4

2.

Controls

Quick Reference 2-2

Operator

Display Image 2-11

Operator

Information

Procedures 2-28

3.

Keyboards

Entry

4.

Keyboard
Keyboard

Select

Features

Data

Similar Keys

Attribute

Selector Light Pen

and

to

3278

Operation

Controls

Panel Lights 2-18

3-3

on

Typewriter

Keyboards

for

Feature

1-1

1-3

Indicators

2-8

Area 2-19

3-1

3-7
3-17

and

3-46

the

3278

4-3

2-6

Data

2-1

Entry

4-1

Keyboards

3-25

Magnetic
Security
Audible Alarm
Numeric
3278
3278
X.21

Chapter

Introduction
Screen
3278
3278
3278
3278
Selector
Magnetic

Appendix

Appendix

Index

Slot

Keylock

Lock
Switch
APL/Text

Switched

5.

the

Processor

Important

3278

5-1

Character
Operator
Display Image 5-7
Operator
Keyboards 5-9

Light

Slot

A.

B.

X-I

Reader

and

Feature

Feature

Feature

Control

Feature

Networks

5-3

Controls

Information

Pen

Reader

Sample Problem

3278

B-1

4-10

4-11

Unit

Feature

Differences

Capacities 5-4

Feature

Accessory 5-16

Display

Magnetic

4-9

Feature
4-13

5-5

Area

5-16

Report

Station

Hand

4-12

4-28

between

5-8

Form

Attached

Scanner

the

3275/3277

A-I

to a 4331

Accessories

and

4-6

v

Figures

All data processing systems have Input, Processing and

1-1.

Output sections.
IBM

2-1.
2-2.

2-3.

24.
2-5.

2-6.

2-7.

2-8.

2-9.
3-1.
3-2.
3-3.

34.
3-5.
3-6.
3-7.
3-8.
3-9.
3-10.
3-11.
3-12.

3-13.
3-14.
3-15.
3-16.
3-17.

3-18.
3-19.
3-20.

3278 Display Station
When the horizontal bar and the Ready indicator appear,
your display station is warmed up and ready to
operate. 2-8
The image
Bank checks have a standard arrangement. 2-12
The normal cursor looks like an underscore. 2-15
The alternate cursor
The cursor wraps when you move it
display area. 2-17
3278 Operator Panel Lights 2-18
Operator Information Area Layout 2-19
3278 Problem Determination Guide Access
Typewriter Keyboard
Data Entry Keyboard
Data Entry-Keypunch Layout Keyboard
Attribute Select Typewriter Keyboard 3-6
Attribute
Attribute
Typamatic (Repeat-Action) Keys
Alphabet Keys
Numeric Keys 3-10
Some symbols are located
Some keys contain only symbols and punctuation
marks. 3-12
PF1-PF12
Typamatic (Repeat-Action) Keys 3-18
Alphabet Keys
Symbol

and Punctuation Mark Keys

Program Function (PF) Keys 3-24

Spacebar 3-25

Cursor Control Keys 3-25

New Line Key Operations 3-27

1-5

on

your screen might look like this. 2-12

Select Typewriter/APL Keyboard 3-6
Select Overlay Keyboard

3-9

Keys 3-14

3-20

2-7

is

a reversed character image. 2-16

3-5
3-5

on

off

any edge

3-6

3-8

numeric keys.

3-21

3-5

34

3-11

of

the

Tab Key Operations 3-28

3-21.
3-22.

Back Tab Key Operation 3-29

CURSR SEL Key Selectable Fields 3-33

3-23.

Use

the

3-24.
3-25.
3-26.
3-27.
3-28.
3-29.
4-1.
4-2.

4-3.

44.
4-5.
4-6.

4-7.
4-8.
4-9.
4-10.

4-11.
4-12.

5-1.
5-2.
5-3.

54.
5-5.
5-6.
5-7.
5-8.

Insert key
Insert Mode Example
Canadian-French Dead Keys (Typewriter Keyboard)
Canadian-French Dead Keys (Data Entry Keyboard)
Attribute Select Keys
Attribute Select Keys
3278 Selector Light Pen 4-3

When the selector light pen
of

the tip
Designator characters tell you about the data
screen.
Magnetic Slot Reader 4-6
Magnetic Hand Scanner 4-6
Only authorized operators may use a display station

a security key lock. 4-9

Control
APL/Text Character
Typewriter/APL Keyboard 4-15
Graphic Characters Entered
Keyboard (2 Parts) 4-17
Typewriter/Text Keyboard
Graphic Characters Entered
Keyboard (2 Parts) 4-22
IBM
3278 Operator Controls and Lights
The alternate cursor
3278 Typewriter Keyboard 5-9

Data Entry Keypunch Layout Keyboard

Canadian French Dead Keys 5-13

44

Unit Selector Switch 4-12

3278 Display Station 5-3

3278 Data Entry Keyboard 5-9

3278 Problem Determination Guide Access 5-10

of

the pen

to

insert missing information.

342

PFI-PFI2
PF13-PF24

is

important. 4-3

Set 4-14

is

a reversed character image. 5-7

348

349

is

being used, correct positioning

by

the Typewriter/APL

4-20

by

the Typewriter/Text

5-5

5-10

on

341

your

344
344

that

has

vi

Chapter

1.

Introduction

Contents
First
Data Processing
The Data Processing System

Input Section
Processing Section
Output Section

1-1

Words

to the Operator

1-4

1-6

1-6

1-7

1-3

1-4

Chapter

1.

Introduction:

1-1

First Words to the Operator

This Operator's Guide provides operating instructions and operating tips for the
iBM

3278 Display Station.

As

a 3278 Display Station operator, you may operate a keyboard, an operator

identification card reader, a magnetic slot reader, a magnetic hand scanner, a

personal computer, or a selector
your organization. The purpose
variolls operating tasks.

of

Readers

this manual need
system equipment, or data processing. General background information
provided to introduce you to data processing and host systems.

no experience

in

this area, begin by reading the "Data Processing" and "The

Data Processing System" sections

The other chapters of this manual discuss in detail the operator controls, indi-

cators, keys, and typical operating procedures for the

light pen, depending on the equipment needs
of

this manual

no

previous knowledge

of

this chapter.

is

to help you prepare for these

of

host systems, display

If

you

3278

Display Station.

is

have

of

The 3278 controls and indicators are discussed

Instructions for keyboard

I nstructions for using the selector light pen, security keylock, magnetic slot

use

are

given in Chapter 3.

reader, magnetic hand scanner, and other

instructions for using the
in

the IBAl Personal

If

you

are

an

experienced 3275 or

differences between the

If you

are

interested

the

IB!'y[

3270

Information Display

Guide, GA23-0023.

I f you

are

interested

Station, refer to the

Unit Display Station Operator's Guide, GA18-2040-0.

IBM

Computer

3275/3277

in

the operation

in

the operation

IBM

3270

3270

Personal Computer Attachment are

3270

Attachment

3277

and the 3278, refer to Chapter 5.

of

System:

of

Information Display

in

Chapter 2.

3278

features are given in Chapter 4.

User's Guide.

operator and you are interested

an

IBM

3274

Control Unit, refer to

3274 Control Unit Operator's

an

IBM

3276

Control Unit Display

System:

3276 Control

given

in

the

Chapter

1.

Introduction

1-3

Data Processing

Following
display system equipment play in the data processing

First, you must understand
information or records required
This is a lot
sider only the
business. The data (information) required
mimes
her rate
amount
the correct amount.

The "processing"
plishing a particular data processing job. In a data processing "payroll"
the processing involves providing the host system with the required data,
determining (with the data) each employee's paycheck amount, printing all
the checks, and updating the records.

Putting the two together, then, data processing is the performance
tasks

Although data processing has always been
tion, it has
the data processing system, almost all processing
Today, most
than before.

is

a brief description

that

of

information

data

required for payroll administration, a common part

of

all employees,

of

pay, the number

of

money

by

processing the required data.

to

in

not

always been called data processing. Before the development

of

it is done by data processing systems and in much less time

to

the

number
of

be withheld, and

"data

processing" refers

of

data processing and

the

"data"

in

"data

by

your organization

think about, so, for our discussion, let us con·

to

perform this function includes the

of

hours each employee worked, his or

overtime hours he

all

other facts needed

to

a major part

of

the part you and

of

your

organization.

processing" refers

to

conduct its business.

or

she worked

to

all the work involved in accom·

of

running an organiza·

of

data was done by hand.

to

of

(if

any), the

pay everyone

job,

of

jobs

your

all the

all

or

of

The Data Processing System

You will be operating a machine that
ing system. To
we

will now examine the different groups
data processing system. The points discussed will
of

the machines

systems.

Regardless
processing systems can be divided into the three basic sections shown in
Figure 1-1: input, processing, and output.

give

you some knowledge

that

are mentioned may

of

the information

is

part

of

your

organization's data process·

of

the other machines in that system,

of

machines

not

be included in all data processing

to

be processed or the equipment used, all data

that

make up a typical

hol4 true even though some

1-4

INPUT

1

PROCESSING

r

j

1

T

!

Figure 1-1. All data processing systems have 'Input, Processing, and Output sections.

OUTPUT

Chapter

1.

Introduction

1-5

Input

Section

An

input machine
mation) into the host system. This definition can be used
machine
may be located

municate with the host system over telephone lines.

Most
handwritten

process this data. These forms are the source
the host system. Thus, the data at this point

Part

is
stand. These machines translate the source data and record it in the host system's

language; also, and perhaps most important, they enter it into the data processing

system.
station will be performing this type
operator identification card reader, and magnetic slot reader are also input devices
which assist you in communicating with the host system.

is

of

the data needed

of

the

the translation

As

is

any machine

part

of

the input section

at

the host system site or at remote locations where they com-

to

or

typed

on

one kind

job

of

the machines in the input section

of

the source data into a form

you type from the source documents,

that

provides for entry

of

a data processing system. Input machines

perform a job

of

form or another. A host system cannot

of

work. Note that the selector light pen,

of

outside data (infor-

to

determine

is

produced

of

is

by

people.

the input data to be entered into

called source data.

of

a data processing system

that

the host system can under-

you

and your 3270 display

As

a result, it

if

a

is

The importance
enough. You may be the best typist in the world, but,
information
is

true

of

duce results

The machines
of

those in the processing section,
system. Keypunches and card readers, typewriter terminals, and display stations
are some types

of

the input section in a data processing system cannot

if

you are given inaccurate

to

type, your completed typing will

any data processing system. The best host system in the world can pro-

(output)

of

value only with accurate input data.

that

make up the input section, though small compared with some

are

vital

of

input machines.

not

to

the success

be

of

much value. The same

of

the data processing

be

stressed

Processing Section

The host system site,
Once the system has all the information it needs for the intended job, the
required work must be performed. This
group

of

machines

system.

Several types
together, they are used to sort the data, test it, perform computations on it,
and otherwise use it to accomplish the assigned job.

Note

that

gram uses the host system's capabilities.

of

we

said these machines are used to process data. The host system pro-

as

you might guess,

that

make up the processing section

machines at the host system site process the data. Working

is

where the host system

is

done at the host system site

of

a data processing

is

located.

by

the

Although a
its actions must be directed. The machines and the program are two separate
things; however, they must work together
system.
the host system and directs the machines in the host system to accomplish the
assigned job.

1-6

host

system

One can do nothing without the other. The program operates within

is

a group

of

machines capable

to

of

doing many jobs,

form an operating data processing

Output Section

Mter

the work has been completed, the results must be made available. This

done

by

the machines

system.

that

make up the

output

section

of

a data processing

is

Output from a data processing system can be in various forms.

drives, card punches, and display stations are only a few examples

machines; the most widely used

is

the printer. Printers can provide printed

Printers, tape

of

output

checks for payroll jobs, printed bills for customer billing jobs, printed reports,

of

or any number

other types

of

output

for all kinds

of

jobs.

Chapter

1.

Introduction

1-7

Chapter

2.

Controls

and

Indicators

Contents
3278 Quick Reference 2-2
Introduction to 3278 Operation 2-6
3278 Operator

On/Off (

~

()

.R.

Normal/Test Switch 2-10
Dual Case/Mono Case (A,a/
Video Test Switch 2-10

The Display Image 2-11

Fields and Formatted Displays 2-13
Input Fields 2-13
Numeric Fields 2-14

2-1

Controls

110

Brightness Control 2-9

Contrast Control 2-9

Audible Alarm Volume Control

)

Swit<;h

2-8

2-8

A)

Switch 2-10

2-9

High-Intensity Data 2-14
Protected Data 2-14

Nondisplay Fields 2-15
Cursor 2-15
Cursor Wrap 2-16
3278 Operator Panel Lights 2-18
Operator Information Area 2-19

Readiness and System

Do Not Enter (Input Inhibited) 2-21

Reminders 2-26
Shifts and Modes 2-27
Highlighting 2-27
Printer Status 2-28

Oeaning Procedures 2-29

Connection 2-20

Chapter 2.

Controls and Indicators

2-1

3278

Quick Reference

Switches, Controls, and Lights

light

2

On/Off

Operator

System

light1

light

(

1/0

I

Operator

Information

Readiness

Connection

~

~

3

SWitch-1l~

Information

Area

and

~

~

~\--=-~---------f

-----------------------

Area

Layout

Shifts

and

Modes

Do

(Input

Not

Enter

Inhibited)

Reminders

Programmed

Highlighting

Symbols

4

I

~

6

'1

l

~meControl

fit"

.

!f

f\

.J

Brightness

Selection

(A,a/A)
Dual/

-NormalfTest Switch

~~~~~Ie

Security

Contrast

Mono

Alarm

Control

Control

Printer

Switch

Case

Keylock

Status

Operator I nformation

Note:

For

a 3278

messages

Refer to the appropriate appendix

• Readiness

Location
Location
Location
Location 3
Location

Locations

and/or

their meanings may be

and

System

1

H1and~

2

l1andA-

3

I

00

3

~

3-6

TEST

Area Symbols and Messages

not

attached to a 3274

Connection

Means

­Means
Your
Your
Your
program
Your

for

a description

Symbols

the

3274 (

the

control
display
display
display

or

the

display

or

to a 3276,

different

111

unit
station
station
station

control

station

these

symbols and

from those described here.

of

these

differences.

)

or

3276

( ~ )

Control

is

connected

is

working

is

connected

is

connected

program.

is

in

Test

with

to
to

Mode.

(online)

your

job

the

s.ystem

the

host

Unit

is

working

to

the

host

(application

operator

system

but

(ready).

system

program).

(control

is

not

under

rules A (

program).

connected

to

..a

your

)

or

rules B (

application

].

'j,

2-2

~278

• Do

Quick Reference

Not

Enter

(Input

Inhibited)

><

.::,

..

::.

><

?+

><

S"{:~;TEt'''l

><

7.:>

><

7.:t··lUr·'·l

><

*u

'?

><

)(

-f

)(

~

nn

and

~

><

)(
)(

)(
)(

)(

><

)(

><

)(

X

)(

)(

><

)(

)(

)(

><

)(
)(

• Reminders

~nn

~nnn

Cl+-{!]

•

Shifts

nnn

~,"-nn

and

~,,-nnn

PROGnn

and

PROGnnn

C}-CJ.:)::

~

..

:»

7.:><

0-.1

-¥-

,-,

......

8:··

7.:"

+'?

7.:

...

+'?

7.:

.....

+'?

7.:'"+'?

7.:

"

}

+?

-:S

0+-00

-f

.xX

~2>:.:>:;

and

and

Programmed

SO No Programmed

PSA

PS'B Programmed

PSC

PSD Programmed
PSE
PSF Programmed

Time

Press RESET;
The
Go elsewhere

You have tried
You
Only
The
Your
or
There

RESET.
to
The

If
determine
The
busy
print
CNCL key.)
Same as above
The
printer
You
Security key lock
That
help.

You have
and

The
A message
The
Your

-

The

- Reserved

Modes Messages

Symbols

Programmed

Programmed

Programmed

Messages

is

required

then

host

system

on

to

should

enter

certain

function

control

determine

control

problem

printer

printing

operation.

printer

are

magnetic stripe card

the

symbol

application

display

communication

numerals can be

you

display

station

unit

Problem

is a problem

If

problem

the

unit

persists, refer

the

appropriate

connected

your

except

assigned

stopped

not

aut:,orized

entered

character.

key

from

station

for

future

Selection

Symbols -Set
Symbols -Set
Symbols -Set
Symbols -Set
Symbols -Set
Symbols -Set

while printing

you
the
program will

Symbols

* * You have selected a Programmed

*

~

Field

Inherit

for

Programmed

for

the

host

system

to

perform a function.

try

the

operation
has locked
the

insert more
only

requested

with

appropriate

detected a programming

work.

(If

the

is

off. Keyboard can be

an invalid

(Canadian

control

use. Ignore .

your

screen

to

numerals

is

is

not

operating

Determination

the

communication

persists, refer

action.

to

the

action.

to

your

Wait

print

more

time

to

your

display

to

do

cannot

accent

pressed

is

link

is

operator

not

not

configured

connecting

Selected

A
B
C
D
E
F

again.

keyboard.

take

that

data

than

in

this field. RESET.

entered

operation

that

Symbols

here. RESET.

not

available.

properly.

Guide

to

the

display

display

for

your

French

not

station

station

the

operation

has

is

anticipated

station

work.

function.

be used in this

and

character

keyboard

available. RESET.

was received

allow

you

for

your

Symbol

Wait.

Look

for

a message. Wait
action.
this field can hold. RESET.

RESET. Move

RESET.

to

determine

line !between

display

error

in the

or

is

busy.

started,

before

is

not

Wait

or

RESET.

unlocked

operation.

only.)

to

make

that

selection .

control

Set

station

the

Then

enter

If

problem
the

appropriate

the

control

or

control

data

it

received

control

to

combination.

unit

unit

Problem

If

~

is

finish,

or

press DEV CNCL

the

operation

your

operation

working. If

press DEV CNCL

only

and

rejected. RESET

that

to

~

by

key.
RESET.

selection.

the

host

displayed

cannot

RESET.

system

or

RESET.

cursor

or

take

Correct

only

persists, refer

unit

unit

from

is
is
to

Try a different

the

numerals.

action.

and

Problem

the

Determination

on

be

canceled

accepted.

displayed

cancel

Then

is

producing errors.

other

action.

entry.

to

the

display

the

host

system.

Determination

host

system. RESET.

Guide

the

right,

the

to

cancel a pending

by

the

on

the

right,

the

print

operation.

card,

rekey

both

to

printer

DEV

the

or

request

the

station

Guide

is

accent

-

*If

neither

symbol

is

present,

the

selection

you

made

is

not

available

at

your

display

station.

Chapter

2.

Controls and Indicators

2-3

3278

• Printer

KEYBOARD

Quick Reference

Status

-

-

-

-

-

-

- You have selected a Programmed

Messages

- When

- Your display station

-

-

-

NUM

APL

TEXT

1l'

I"-

ALPHA

- Character Highlighting

a

r::J---C:]__

o---..nn

·~nn

The

keyboard

The

keyboard

The

keyboard

The

keyboard

The

display station

The

keyboard

Normal character selected
Blinking character selected

Reverse character selected
Underscore character selected
Field inherit

you

locations

The

selected printer

The

printer stopped while printing

Your

printer assignment has changed.

is

in

Numeric Mode. Only 0 through

is

in

APL Mode.

is

in

TEXT

is

in

upshift.

is

in

is

in

Alpha

for

character highlighting

are changing

of

the

message.

is

is

printing

Mode.

Insert Mode.

Shift

the

authorized

(Data Entry Keyboard only)

Symbol Set .

Printer ID/Class,

to

your

work.

your

the

two

use Printer ID/Class nn.

work.

9,

period (.), minus (-), and DUP will be accepted.

numerals

you

key are displayed in

the

underlined

""m888EfBBBB8B8Ed-~~

~~l~'

_:·~~E~_~~"n

*Typewriterkeyboard

The
when

.,·1·~~E~3f3Eag88B888888

...

'

~~

___

,,'

only.

keys highlighted above are

held

down.

They are:

.....

~

....

D

•

+

•

..

...

...

All
Tab

·New Line
Back

Home
Backspace

Move cursor

Move cursor
Move cursor left
Double-speed move cursor left
Move cursor right

typamatic

Alphabetic, Numeric,

Tab

keys. This means

up
down

Symbol,

,n.,

that

they have

and

,~~_~_~~.~~~~~i

the

ability

to

repeat their character

Punctuation

Mark Keys, and

8[9

the

following keys:

___

j

or

function

2-4

3278

Quick

Reference

Some

of

CURSR

CLEAR

ERASE INPUT

ERASE EOF
CURSR BLINK
ALTCURSR

Cl-Cl

IDENT

c::!l

TEST

DEV CNCL

~

I'

+~

the

function keys are:

SEL

Double-speed move cursor right
SKIP (Same as Tab)
Spacebar

ENTER

PFl-·PF12

RESET (Data

Selects fields for processing. Cursor

cursor selection.

Erases display and signals

Erases all

Erases

the

Causes cursor

Selects

Print key. Sends

Signals

Operator
assignment
Turns

the

Used

to

Determination Guide.

Cancels a pending

Insert key. Allows character insertion in an input field.
Delete key. Deletes

Entry

- Keypunch

input

fields and moves

input

field

from

to

blink or

between

that

run special problem

the

two

data

the

next

Information

is

changed.

keyboard

clicker on

print

from

two

Area.

request

the

Layout

must

the

host

system

the

cursor

the

cursor

not

blink.

forms

of

cursor (underline

the

display

numbers will be

The

IDENT key

or

off.

determination

to

the

character

at

the

Keyboard)

be

in

a field

that

a clear action occurred.

to

the

first

to

the

end of

the

and

station

printer.

to

the

the

selected
is

also used

functions. Refer

cursor position in an

that

your

application has designated

input

character

field.

The

cursor

reverse

selected printer.

printer

to

To

character

I D code.

display

end

the

to

your

Insert Mode, press RESET.

input

field.

position

does

image).

The
new

display

on

the

not

move.

I D

is

displayed

ID

when

station's

for

screen.

in

your

printer

Problem

the

How-to-Do References:

• Insert character(s)

• Remove (delete) character(s)

• Enter alphabetic character(s)

• Select a selectable field

• Request

• Cause

• Cause

• Select

• Cancel a

•

Turn

• Use a selector light pen - see

• Use a magnetic slot reader
Hand Scanner Accessories" in Chapter 4.

• Adjust

• Use highlighting

- character reversal - see

-

- character underscoring - see

• Use

• Use

Something

Is

this it? . . . . . . . . . .

Display
No clicks when keys are pressed.

For more information

or

the

information

the

cursor

the

alternate cursor - see AL T

print

the

keyboard clicker

the

audible alarm volume - see

character

the

programmed symbol set selection keys - see

the

Field Inherit Keys - see

Is

station

into

change

the

to

blink

operation

blinking - see

Wrong

will

not

turn

on

a displayed area - see ~ key description in Chapter 3.

from

a displayed area - see

into

a Numeric field - see

with

the

CURSR SEL key - see CURSR SEL key description in
printer
on

troubles, refer

ID

- see IDENT key description

your

screen

to

on

and

off

- see
CU

- see DEV CNCL key description
on

or

off

- see

"Selector

or

a magnetic hand scanner - see "Magnetic Slot Reader and Magnetic

"Audible

"Attribute

"Attribute

on. Make sure

Selection Keys" in Chapter

Selection Keys" in Chapter 3.

"Attribute

"Attribute

to

;l

key description

"Numeric

be printed - see

CU

RSR B

RSR key description

c:iJ

key description

Light Pen

Feature"

Alarm

Selection Keys" in Chapter 3.

Selection Keys" in Chapter 3.

Have

Is
Is

the

3278 Problem Determination Guide.

Cl-Cl

LI

N K key description

in

Feature"

"Attribute

you

tried this?

Do

Not

Do

Not

Lock

in

Chapter 3.

key description in Chapter 3.

in

Chapter

Chapter

in

Chapter 3.

in Chapter 4.

in Chapter 4.

3.

Selection

the

power cord

Enter ( )(

Enter (

)(

in

Chapter 3.

Feature"

3.

3.

) symbol
) symbol off? Check

in

Chapter 3.

Keys"

is

plugged

in

Chapter 4.

in

Chapter

into

on?

Chapter

RESET key

3.

the

wall

condition

3.

outlet.

turns

it

of

off.
Click (

c:IJ

) key.

Chapter

2.

Controls and Indicators

2-5

Introduction

If

possible, sit

you can use the switches and keys

has a keyboard attached and

moment
purpose
needs service
ready interrupts the program. In case you do

your display station, you will only be required

display station (as explained in this section).

IBM

The

Your 3278 Display Station will have one
480 characters

80 characters each), 1920 characters (24 lines
characters (32 lines
characters each), or 3564 characters (271ines

If

your organization uses
work with programs
can format the screen
3277 screen. The 3275 and the 3277, however, have 480- and 1920-character
screen formats.

to

3278 Operation

at

a display station

to

press the key and watch the result. Keep in mind, however,

of

some

of

the keys

by

the program. Pressing any

3278 Display Station

(12

lines

of

of

80 characters each), 3440 characters (43 lines

both

that

use

of

your 3278 in the same way that they format a 3275 or

as

you read thjs part

as

you read about them.

if

some point is

is

to

notify the host system that your display station

is

shown in Figure 2-1.

40 characters each), 960 characters

3275/3277 and 3278 Display Stations, you may

both

groups

not

of

these keys when the host system

not

to

of

the following six screen formats:

of

of

of

display stations. These programs

of

the manual

If

your display station

clear

as

you read, pause for a

have a keyboard provided with
make initial adjustments to the

(I2

80 characters each), 2560

132 characters each).

so

lines

of

that

that

of

80

the

is

To enable the 3275/3277 programs
960-character 3278 can be formatted as a 480-character display (12 lines
40 characters each) and the 2560-, 3440-, and 3564-character 3278s can be
formatted as 1920-character displays (24 lines
programs may use the large format, and other programs may use the smaller
format. Therefore,
the display station may switch between the large format and the smaller
format for different transactions.

if

you use a 960-, 2560-, 3440-, or 3564-character 3278,

to

use

both

groups

of

display stations, the

of

80 characters each). Some

of

2-6

The On/Off ( I / 0 ) switch

the screen brightness control
located near the screen's lower-right corner. The brightness and contrast controls
allow you

We
adjusting and interpreting the display image, through explaining the indicators,
and,
keyboard.

to

adjust the display

will begin by turning on the display station.

if

your display uses a keyboard, to understanding all the keys on the

is

located near the screen's lower-left corner;

-d-

and the contrast control

to

a comfortable viewing level.

We

will then proceed from

()

are

Figure

2-1.

IBM

3278 Display Station

Chapter

2.

Controls and Indicators

2-7

3278 Operator Controls

On/Off(

Press the top portion ( m )

on

your
on when you pressed the
machine to warm up. After this delay, (1) Light 2 turns on, (2) a short horizon-

tal bar (cursor) appears in the upper-left portion

position in line 1, (3) a horizontal line appears across the lower portion

screen, and (4) a Ready symbol (see 3278 Quick Reference, Readiness and
System Connection Symbols) appears

(Operator Information Area).

If

your display station has the Security Keylock feature (described in Chapter 4)
and the keylock is locked, the
bottom
(turn
(turn

Note: The keylock turns 90° (vertical to horizontal position) when

the key.

When you are ready

<101

I/O

display station. Light 3 and Light 1 (see Figure 2-2) should have turned

of

the screen
key clockwise). When you leave your display station, turn on the lock
key counterclockwise) and remove the key.

)of

the On/Off switch.

) Switch .

of

the On/Off switch shown at the right to

On/Off switch. A delay

in

See Figure 2-2.

)(

.:.....,

to

to

tell you

turn

to

insert the security key and turn

off

your display station, press the bottom portion

of

a few seconds allows the

of

the screen under the first

of

the

the lower-left portion

(Security Key) symbol appears at the

of

the screen

off

you

the lock

turn

turn

,

~

I

- -

10"

Light 1

Ready

Symbol

(when attached

Figure 2·2. When the horizontal bar and the Ready indicator appear, your display station

to

a 3276)

.Normal/Test Switch

Audible Alarm
Volume Control

is

warmed up and ready to operate.

2·8

-¢-

You can adjust the brightness
ing the brightness control
to
with this control until you find the setting
able for your viewing.

Brightness Control

of

the characters displayed on the screen by turn-

U knob

the right makes the display image brighter;

to

the left or

to

that

to

the right. Turning

the left, dimmer. Experiment

is

most convenient and comfort-

it

This control also has a test position. When the control knob
wise beyond the first stop and held, the screen becomes very bright.

()

The contrast control
able viewing.
(explained later in this chapter under the heading

contrast control varies the difference between these two levels. You may have

experiment with this control until you find the contrast level

Contrast Control

()

is

another aid in adjusting your display for comfort-

If

your organization uses two intensity levels

"High Intensity Data"), the

is

turned fully clock-

to

display characters

that

satisfies you.

to

il

If

installed, the volume control

outside
will increase the sound level; turning the control counterclockwise will decrease
the
Audible Alarm feature description in Chapter 4.

Audible Alarm Volume Control

your display station has the Audible Alarm feature (described in Chapter 4)

R for the audible alarm

of

and behind the screen contrast control. Turning this control clockwise

sound

level.

If

you want

to

test

or

adjust the audible alarm, refer to the

is

located at the

Chapter 2 Controls and Indicators

2-9

Normal/Test Switch

When

you

are operating the display station, this switch will be in the Normal

position.

Normal

You will use the Test position

you

machine and
place the switch
in Section 3

Dual Case/Mono

You can use this switch
case alphabetic characters or (2)
select only uppercase characters, set the switch to
lowercase characters, set the switch

However, the position
lowercase alphabetic characters are sent

is

switch
acter
system, the code for a lowercase e character

set to A and

is

displayed

perform the problem determination procedures. When you

in the Test position, you can perform the tests

of

the 3278 Problem Determination Guide.

Case

of

you

on

the screen; however, when the character

of

this switch when

(A,a/A)

to

cause your display station

this switch does

enter a lowercase e character, an uppercase E char-

Switch

both

uppercase and lowercase characters. To

to

A,a.

not

determine whether uppercase or

to

the host system. For example,

is

sent.

Video Test Switch

If

your

display station has the

installed, the Video Test switch

not

This switch does

operation.

affect the display and can be in any position during display

IBM

3270 Personal Computer Attachment

is

located in a panel

you

have a problem with the

that

to

display

A;

to

select uppercase and

on

the back

is

(l)

sent

of

only upper-

the display.

are described

if

the

to

the host

8

Test

A,a

[3

A

Test Mono

8 Normal

Test Color

You will use

have a display station problem and are performing problem determination.

the

Test Mono and Test Color positions

of

the switch when

you

2-10

The Display Image

To make your display station ready for operation, perform the following:

If

Note:

the

1.

2.

the display station screen

end

of

this chapter.

Use

the On/Off ( I / 0 ) switch

If

the display station has the Security Keylock feature, insert the security

key into the lock and turn the key clockwise. (Refer to

of

description

the Security Keylock feature.)

3. Adjust the brightness and contrast controls.

4.

If

t}1e

display station has the Audible Alarm feature, adjust the audible
alarm volume control by using the procedure in the
feature description.

If

your display station has a keyboard, skip over the next paragraph and continue

reading this section.

If

your 3278 does not have a keyboard, selector light pen, magnetic slot
reader, or magnetic hand scanner attached, operation
program, and you may monitor information displayed on the screen.
your 3278 does not have a keyboard, selector light pen, magnetic slot
reader, or magnetic hand scanner, you should now read about the lights and
the Operator Information Area

Panel lights." If your 3278 does
selector light pen, a magnetic slot reader, or a magnetic hand scanner, read
about the lights and the Operator Information Area, starting with

Operator Panel lights," and then refer
selector light pen or magnetic slot read operation.

is

dirty, refer to "Qeaning Procedures"

to

turn the display station on.

Chapter 4 for a

Chapter 4 Audible Alarm

is

controlled by the

on

your 3278, starting with "3278 Operator

not

have a keyboard, but does have a

"3278

to

Chapter 4 for a description

at

If

of

we

Before

talk about the keyboard, there are some things you shoulq know

about your display screen.

As

we

have said before, the 3278 Display Station can be used by many different

of

organizations, all with very different kinds
organization, there are

host systems are capable

Therefore,

it

is

possible

operator next to you

images on your two screens

Figure

2-3

is

a typical display image; you will be referred

of

the discussions that follow. Keep in mind that this example

m'any

different applications for 3278 displays. Today's

of

process~g

that

you could be working on one jqb

is

doing completely different and unrelated work.

woulH

probably be completely different .

• " ; f

jobs to be done. Even within one

many different jobs

at

the same time.

~hile

to

t4is image

is

the

Tn.e

in

only one

some

of
many possible display images. Your organization may not even require this type
of

image. The references made to it, however, apply

to

all images.

Chapter

2.

Controls and Indicators

2-11

Figure

2-3

..

The image on your screen might look like this.

As

you can see, the display image looks much like information typed on a sheet

of

paper. Notice, too, that the organization and content

different from the organization and content

documen~s.

This

is

The same type

true

of

all documents,

of

information

as

can be seen by examining the arrangement

of

handwritten and hand-processed

is

always recorded in the same areas.

of

this form are no

standard bank check (Figure 2-4).

3'

of

a

PAYTOTDE

ORnER

___________________________________________

OF.

_______________________________

__________________

..u.

o::!'

______

10

.:II)'Ull.I'

.....

__

_

R~

Figure 2-4. Bank checks have a standard arrangement.

The upper-right portion

of

name

the party to whom the check

is

usually reserved for the date. The center

is

made payable and the amount

is

for the

of
check. The lower-right portion usually contains the space for the signature
the person writing the check.

the

of

2-12

Fields and Formatted Displays

The various areas
tion are called "fields" in data-processing language, for example, the
or the "signature" field. Most documents
be organized by fields.

of

bank checks

that

always contain the same type

to

be entered into a host system will

of

informa-

"date"

field

This practice
person using the information could do his or her job much faster knowing that
one type

When a display station screen
display station quicker and easier for
host system program. The application program divides the screen into fields and
establishes the rules
that the same type
Knowing this, the program can process the data from the screen much more
quickly. The operator can also perform his or her job more efficiently having

this information.

When a screen

that the program has not divided into fields
Eachjob that you work on could use a different format or none at all; therefore,
you may be working with

Input

You may
program
into this type
reason, in the remainder
referred
which are the input fields for

of

standardizing the arrangement

of

data would appear at the same location on every document.

is

divided into fields, it makes working with the

both

as

to what each field will contain. The program then knows

of

information will always be displayed in the same location.

is

divided into fields, it

both

is

fonnatted and unformatted screens.

of

data originated because the

the display station operator and the

known

as

a formatted screen. A screen

is

known

as

an unformatted screen.

Fields

see

two types

to

send you messages, instructions, and headings; you cannot key data

of

to

as

input fields. Each application program user's guide should tell you

field.

of

fields on your screen. One

All

of

your entries will be into the other type. For this

of

this manual, fields

that

particular job.

that

is

primarily used by the

you can key data into will be

Once a field
should not be used for other data items in that job. For example, one field
the screen in Figure
mation you will key into it.
CODE number into the STOCK
board may stop functioning or a message may appear on the screen telling you
of

the error.)

There
will always be the same number
normally arrived at

entered in the field, the longest possible length

is

known. For example,

therefore, the field for Stock numbers
imum length
length must be estimated by some method, and the field length must be set

from that estimate.

The number and names

the job you are doing and the application program
host system.

is

assigned

is

no rule stating

is

not known,

to

one type

2-3

is

called "STOCK NO". That

that

by

determining, from the type

all

Stock numbers could be the same length, 9 digits;

as

of

fields that you will

of

data in a job, those character positions

You will not, for instance, key the digits

NO

field. (Otherwise, the display station key-

fields must always be a certain length or that there

of

fields

on

is

9 character spaces long. When the max-

in a field marked for customer name, maximum

is

the only type

the screen. The length

of

information

of

one entry. In many cases, this

see

on your screen will depend

that

is

operating in the

that

of

of

infor-

of

an MFG

a field

will be

on

is

on

Chapter 2 Controls and Indicators 2-13

Numeric Fields

Fields

that

normally contain only numbers (Stock number, manufacturer's code
number, etc.) are known
whose jobs are largely

Entry

of

numeric data
(described in Chapter 3). When your screen
program, the Data Entry keyboard automatically shifts
and the
when the cursor enters a numeric field.
installed in your keyboard, the
Information Area instead
Data Entry keyboard, numeric fields help

If
feature installed, the
Area when the cursor enters a Numeric field. When this occurs, the only keys
that
minus ( - ), and the DUP key. Pressing any other key
able character turns on the Do Not Enter - Numeric Data Only
message in the Operator Information Area and disables your keyboard (keyboard
either starts or stops clicking). For additional information concerning the
Numeric Lock feature, refer

It (upshift) symbol appears in the Operator Information Area

you are using a Typewriter or Data Entry keyboard that has the Numeric Lock

you can key into the Numeric field are the digits 0 through 9, period ( .

as

Numeric fields. Such fields are used in organizations

of

the data-entry type.

is

made possible by use

NUM

shift symbol appears in the Operator

of

the It symbol.) Therefore, if you have a

NUM

shift message appears in the Operator Information

of

a Data Entry keyboard

is

formatted by your user's

to

Upshift Mode

(If

the Numeric Lock feature

to

increase your operating speed.

that

can enter a display-

(><

to

Chapter 4.

is

),

*NUM)

The user's program guide for the program that
designate which the numeric fields are.

Figure

2·5 shows two other features

often. The more apparent

of

these

of

is

called "High·Intensity Data."

you

are working with should

the 3278 that you can expect

to

High-Intensity Data

This feature
program)
high-intensity fields stand
Many companies make effective use
names at normal intensity and the operator-keyed data at high intensity.

of

the 3278 allows the display

at.a brighter than normal intensity.

out

from the other fields displayed on the screen.

of

of

this feature by displaying the field

fields (selected by the application
Use

of

this feature makes the

Protected Data

Not quite
are the fields displayed at low intensity.
there will be some areas
will not be able
STOCK

The protected·data feature aids your operation because you do
worry about making a mistake and destroying part
A
mation Area
insert, or delete characters) any data in a protected field.

><

so

obvious in the example in Figure 2-5 are the protected fields. They

We

mentioned before that, in most

on

the screen where you will not be able

to

change field names (titles), for instance. In Figure 2-5,

NO

is

a field name and would probably be a protected field.

of

the data on your screen.

...

*....

(Go Elsewhere) message will come on in the Operator Infor-

(bottom

of

screen)

if

you attempt

to

change (type over, erase,

to

type. You

not

have

see

jobs:,

to

The blank field directly following
number input field.
into this field.

The user's program guide for the program
designate which fields
inpu t fields.

2·14

You would key stock numbers from your source document

on

the screen contain protected data and which are your

"STOCK NO" is the unprotected stock

that

you are working with should

Nondisplay Fields

This feature
to

be nondisplayable. An example
a field for entry
station.
your
screen.

The user's program guide for the program that you are working with should

designate which fields on the screen

of

the 3278 allows the program to cause the information in a field

of

the

use

of

a nondisplay field

of

your operator identification when you log

When

you enter

your

operator identification into the nondisplay field,

operator identification remains secret, because it

are

nondisplay fields.

on

is

not

displayed on the

is

using such

your display

Cursor

The cursor operation
are working with the display image. You will find
cursor makes operating a 3278 easier and more enjoyable than operating a
writer or a keypunch. For example, moving the cursor
repositioning the carriage

is

an important operation for you

of

a typewriter or transporting the card in a keypunch.

to

understand when you

that

the flexibility

is

easier and faster than

of

the

type-

Two types

of

cursors can be displayed on the screen

of

a 3278: the normal

cursor and the alternate cursor. The normal cursor appears on the screen

is

underline to the character position in which it

located (Figure 2-5).

as

an

Figure

2-5.

The nonnal cursor looks like

The alternate cursor
same character position

is

a reverse image

as

the cursor (Figure 2-6).
and CURSR BLINK keys (described in the keyboard sections), you can select
either type

cursor and

you

can also make the cursor blink on and

of

continuously.

an

underscore.

of

the character

that

is

located in the

By

using the ALT CURSR

off

Chapter 2 Controls and Indicators 2-15

Figure

2-6.

The alternate cursor

is

a reversed character image.

The cursor marks the position on the screen that the next character entered from
the keyboard will occupy.

It

may be moved about freely on the screen, by use

of
certain keyboard keys, without interfering with other characters. You will also
notice, when entering characters from the keyboard,
the next available character position
Canadian French keyboard Dead Keys,

as

each character

as

explained in the keyboard sections).

that

the cursor moves to

is

entered (except for

You may

see

the cursor apparently changing locations by itself.

It

can be moved
about on your screen by the program, and when the cursor appears to be moving
by itself the program

is

repositioning it for you.

Cursor Wrap

The cursor control keys
board sections. They move the cursor in either the horizontal (left or right) or
vertical (up or down) direction on the display station screen; the

(horizontal positioning) keys and the + and + (vertical positioning) keys

move the cursor one position at a time; the
tal positioning) keys move the cursor two positions
the key that moves the cursor

of

the line and will reappear one line lower on the left side. This

side

cursor wrap. In effect, the cursor wraps around behind the screen.

when moved to the left, and it will reappear one line higher on the right side.

See Figure 2-7.

Cursor wrap also occurs when the cursor
these cases, the cursor reappears in the
side

of

the image)
shift left or right. In the examples in Figure 2-7, pressing and holding the indi­cated keys when the cursor

are

located on the keyboard and described in the key-

to

the right, the cursor will move

that

it occupied before moving

is

located at A moves the cursor to

.... and

.....

and

......

(double-speed horizon-

at

a time.

is

moved up or down. Notice that, in

same

vertical position (on the opposite

off

the screen; there

If

you hold down

off

the right

It

B.

...

is

called

also wraps

is

no

2-16

Because your 3278 may
3278 Operation," earlier in this chapter), keep in mind that the cursor wraps

horizontally at the first (left) and last (right) character positions

(2) vertically at the top and
bottom
play area for the format being used, not

of

the screen. In other words, the cursor wraps

use

two different screen formats (see "Introduction

of

bottom

lines, not at the left and right or top and

at

the edge

at

the edge

of

the screen.

the line and

of

the dis-

to

(l)

...---

,/

/

I

\

\

---

---....;.--

~------,

..

------

........

"

--

"

\

\

J

.

\

)

/

/"--"

/

I

I

I

I

I

I

I

,

I

I

I

I

I

I

\

\

'-

I "

I

I

I

I

I

I

I

,/

""

",.-""

Figure 2-7. The cursor wraps when

you

move

it

off

any edge

+

I
I

I

I

I

I

I

\

of

the display area.

Chapter

2.

Controls and Indicators 2-17

3278 Operator Panel Lights

The 3278 Operator Panel

Light 2

Light 1

':i

is

shov/n in Figure 2-8.

~

Light3--~

~.

Figure

2-8.

3278 Operator Panel Lights

Light 3

Ught 3, when lit, tells you that the display station

turn the

On/Off q /

0)

switch to the On ( m ) position.

Operator I nformation Area

is

on.

It

will light when you

Light 1 .

Light 1, when lit, tells you that the machine hardware
you turn the

Light 2

Light 2, when lit, tells you that the display image

seconds after you turn the

On/Off (

I/O)

On/Off q

switch to the On ( m ) position.

/0)

switch to the On (

is

ready.

is

ready.

It

will light a few

It

will light when

fll

) position.

2-18

Operator Information Area

The Operator Information Area

area

is

separated from the rest
Operator Information Area is used
that

are associated with

as

displayed

)(

:,'.f".':

D represents a display or printer unit

~ signifies a malfunction,

symbols, words, and numerals. For example:

means Do

Not

means time

Enter

is

required

your

is

the

bottom

of

the display area by a horizontal line. The

to

display operating

line

of

your display screen; this

and

status messages

display station operation. These messages are

(Input

Inhibited)

not

working

- signifies a connection

Messages may be composed

of

groups

of

symbols which are read from left

to

right. For example:

)(

):.

means Do Not

Enter

because time is needed for the host system

perform a function.

)(

~

means Do

Not

Enter because your display station is

not

operating

properly (Machine Check).

C}---CJ()b

X

means your display station

~

means Do
station

Not

is

not

is

connected

to

printer 06.

Enter because the printer connected to

working.

your

display

The operating and status messages are grouped into five categories, displayed
in

five

different portions

of

the Operator Information Area

as

shown in

Figure 2-9.

to

Note:

For a

3278

not

attached to a

3274

or to a 3276, these symbols and/or

their meanings might be different from those described here.

appropriate

Readiness and

System Connection

Figure 2·9. Operator Information Area Layout

appendb. for a description

Do

Not Enter

(Input Inhibited)

of

these differences.

Reminders

Refer

to the

Shifts and Modes

Programmed Symbols Selection
Highlighting

Pri

nter Status

Chapter

2.

Controls and Indicators 2-19

Readiness and System Connection

The Readiness and System Connection symbols, displayed in the Operator
Information Area, are used either singly or in combinations to indicate the
readiness status

BJ

and ~ (Control Unit Ready Symbols)

A

BJ

or a ~ symbol appears in the Operator Information Area when the

control unit that your display station

of

your display station, control unit, and host system.

is

connected to

is

ready for operation.

If your
Normal) and:

.8.

A Ready symbol must be displayed on your screen before an

(Online) symbol can be displayed. The Online symbols, displayed in the

Operator Information Area, are used
connected (online)

If
is
with the host system.

'Operator

,

is

, displayed

The online
station that requires a response from the host system. When the host system
responds,
apparent depends upon how busy the host system
responds .

3278 display station

•

is

connected

3274

• is connected

3276

and A (Online Symbols)

your display station

displayed

governing. In those 'cases you will be referred

to

a 3274, the

is

ready for operation .

to

a 3276, the ~ symbol appears on your screen when the

is

ready for operation .

to

to

tell you which oCtwo sets

Information Area symbols differ depending upon which set

in

the Operator Inforination Area.

.8.

symbol turns

the.B. symbol turns on again. Whether or

is

in Normal mode (Normal/Text switch set

BJ

symbol appears

to

tell you that your display station

the host system.

is

attached and online to the control unit; the

of

Ce~tain

keyboard functions and the meanings

off

when you perform any action at your display

on

your screen when the

rules governs

to

the

.8.

not

is

and how quickly it

.8.

or a J!

.8.

your

transactions

of

of

or 1. symbol

this off/on action

to

is

or A

some

rules

is

• ,f!j

The.

Information Area, are used

2-20

,[1J

,and

TEST

'

00

,

I1J

and the

• - Your display station

00

- Your display station

program).

[1J

- Your display station

your

job

or system operator.

T E

:~;

T - Your display station

Problem Determination Guide.

TEST

message, displayed in the Operator

to

tell you that:

is

connected

is

connected

is

connected to the host system but not

is

in Test Mode

to

your job (application program).

to

the system operator (control

to

as

described in Section 4

of

the

Do

Not

Enter (Input Inhibited)

The

)(

(Do Not Enter) symbol tells you that your display station will not

accept input from your keyboard, selector light pen, magnetic slot reader, or
magnetic hand scanner. Additional symbols are always displayed to the right

of

the)(

are disabled.

There
keyboard, such
abled,
can still press them down normally.

Your keyboard contains a clicker that causes a click when you press the keys.
You can turn the click
board (described in the keyboard sections).
on, the absence
have the clicker turned off, the presence
is

disabled.

The reasons why Do Not Enter comes on are discussed in the descriptions that
follow. Each description also tells you how to turn
sage

)(

This message tells you
you requested.

,in

the Operator Information Area, to define why your input devices

is

no mechanical keyboard lock associated with preventing the use

as

there

is

on keypunch keyboards. That is, when input

the-

keys on your keyboard are

off

or

on

of

the click indicates that the keyboard

and restore your keyboard (when possible).

·:·.l:·

-Time

that

the host system needs time

You must wait for the function

not

physically locked in one position; you

by using the Click (c:!1 ) key on your key-

When

you have the clicker turned

is

disabled; when you

of

the click indicates that the keyboard

off

the

Do

to

perform the function

to

be completed.

Not Enter

is

of

dis-

mes-

the

)(

'?+

-What? (Try Again)

All,

or part,
sta tion. Check your display screen to make sure the operation you want
perform
operation again.
and press the
is

displayed.

RESET, and restart the IDENT key operation.

)(

S···(STEr··l- System Lock

This message means the host system has disabled your keyboard after processing
your entry. The host system may send you a message on your display screen
explaining the reason for disabling your keyboard.
host system to restore your keyboard or (2) press the
your keyboard.

of

the last operation you tried was not accepted by the display

is

correct, press the RESET key to restore your keyboard, and try the

If

the ALT,

RESET key. Do not key in any more data while the

If

an IDENT key operation was in progress,

.u.

,or

1l'

key was involved, press that key again

)(

it

was canceled. Press

You may (1) wait for the

RESET key to restore

symbol

to

Chapter

2.

Controls and Indicators

2-21

)( .-f-+ - Go Elsewhere

if

This message appears

you try

• To enter, insert, erase, or delete a character when the cursor
field.

• To read a magnetic stripe when the cursor

to

take an action in the wrong location, such as:

is

in a protected field.

is

in a protected

• To perform a cursor select operation when the cursor
select field (refer to

CURSR SEL key description in the keyboard sections).

is

not in a valid cursor

Press the RESET key to restore your keyboard; then move the cursor to another
location or take a different action.

)( f > -Too Much Data

if

This message appears

Press the RESET key

)( f

o

f'"0~

U r

,ol

- Numeric Data Only

This message appears

0-9, .,

-,

or DUP) into a numeric field. Press the RESET key

you try to enter more data into a field than

to

restore your keyboard; then correct the en try.

if

you try to enter a non-numeric character (other than

keyboard; then enter numeric data. To override the numeric control,
or

~

(~

key

is

present on Data Entry keyboards only).

)(

fU1' -What Number?

This message tells you

that

only certain numbers can

be

entered for the operation

you are performing. For example, this message is displayed when you:

• Enter an invalid Printer ID or Printer

Class

during a print operation (refer to

IDENT key description in the keyboard sections)

• Make an error when your display station

is

in test mode (follow test instruc-

tions in the Problem Determination Guide)

Press the RESET key to restore your keyboard; then enter the correct number.

it

to

restore your

can hold.

use

1}

2-22

)( - f -Minus Function

that

This message means the function (operation)
Press the RESET key. Check the Operator Information Area for
determine if the function is permanently

If

@]..8.

o

unavailable.

action.

o

If
PF keys and transmission

reader, and magnetic hand scanner are inappropriate at this time.

RESET key to restore your keyboard;

o

If
PA, and PF keys and transmission

magnetic slot reader, and magnetic hand scanner are inappropriate at this
time. Press the RESET key

fa

If
IDENT, CURSR BLINK, and ALT CURSR keys are permanently unavail­able. Press the RESET key

o

If

follow exactly the instructions in Section 4
Guide.

CI

If
played, the function
restore your keyboard, check the screen, and try the function again.

If

o

able while
finishes, or press the RESET key and take other action.

or [J.B. is displayed, the function (except IDENT)

Press the RESET key

@]

£.

00

or

[:

~

00

is displayed, the CURSR SEL, ATTN, PA, and

to

the host system

@]

~ri1

or

~

~ri1

is

displayed, the CURSR SEL, ENTER, ATTN,

to

Ihl

~

is

displayed and CURSR BLINK does

to

TE:~:T

1:.

none

is displayed, press the RESET key

II

is

displayed and none

is

temporarily unavailable. Press the RESET key

of

the above

CJ-C.1n

is

displayed, the IDENT function

n

is

displayed (printer

or

to

restore your keyboard; then take other

then

to

the host system

restore your keyboard;

restore your keyboard;

of

the above symbol combinations are

you requested

temporarily unavailable; for example:

via

selector pen, magnetic slot

take other action.

via

not

to

restore

of

the Problem Determination

is

printing). Wait until printer

is

not

other

is

permanently

selector pen,

then

take other action.

work, the D-CI ,

then

take

other

your

keyboard; and

is

temporarily unavail-

available.

symbols-

Press the

action.

dis-

to

to

)(

~

n n

or)(

This message means your display station
number, nn or nnn, defines the type
to

restore your keyboard, and continue.

Problem Determination Guide to determine the appropriate action.

)(

~nn

This message means there is a problem with the communication line between
the control unit and the host system. The error number, nn or nnn, defines the
type

of
keyboard, and continue.
Determination Guide

or

Communication Check. Press the RESET key

~

n n n -Machine Check

is

not

working properly. The error

of

Machine Check. Press the RESET key -

If

the problem persists, refer

)(

~nnn

If

the problem persists, refer

to

determine the appropriate action.

-Communication Check

to

restore your

to

your

Problem

to

your

Chapter

2.

Controls and Indicators 2-23

)(

PROGnnor

)(

PROGnnn

-Program Check

This message means the control unit detected a programming error in the data

it received from the host system. The error number, nn or nnn, defines the

of

type
continue.

Program Check. Press the RESET key to restore your keyboard, and

If

the problem persists, refer to your Problem Determination Guide

to determine the appropriate action.

)(

c:J--Cl.»

The

)(

is

busy and carinot perform the print operation you requested.

played in the Printer Status

forming your own print operation;

Message

Printer

Cl-Cl.:.;

Busy

..

::.

message means the printer connected to your display station

Area, the printer

If

~

Message

is

busy performing an operation for another display

Area to the right, the printer

if

o-c::J

is

displayed in the Printer Status

is

busy per-

is

dis-

station or the host system.

If

you initiated the print operation by using the

(1) wait for the print operation to fmish or (2) press the

If

cancel the operation.

be

may

able to select another printer using the IDENT procedure and restart the

print operation by using the

If

the print operation

you cancel the operation and

CHl

key.

was

initiated by the host system (via a P A key, the ENTER
key, etc.), you can cancel the print operation by pressing the
However,
either

if

the host system initiates the same print operation again, you should

(1) wait for the print operation to finish or (2) wait for the host system

CHl

key, you can either

DEV

o-c::J

CNCL

key to

is

displayed you

DEV

CNCL

key.

to restore your keyboard.

The

RESET key has no effect when this message

)(

r::::J-Cl.):

This message means the same thing

except that more time

)(

~

The)(
working (out

..

):. -Printer Very

Busy

as

is

anticipated before your print operation

- Printer Not Working

~

message means the printer connected

of

order, unplugged, out

the)(

of

paper, etc.) and cannot perform the

print operation you requested. Therefore, your print request

If

you initiated the print operation by using the

the

DEV CNCL key to restore the keyboard. Your print request

is

displayed.

CJ---CJ.:

(.

to

CHl

(printer Busy) message,

is

accepted.

your display station

was

canceled.

key, you should press

was

canceled.
You may then select a different printer using the IDENT procedure, try to
restore the failing printer, or take other action.

If

~

is

displayed in the Printer Status

Message

Area to the right, the printer

stopped working while printing your own last print operation.

If

the print operation

key, etc.), you can cancel the print operation by pressing the

RESET key has no effect when this message

The

was

initiated by the host system (via a

is

displayed.

PA

key, the ENTER

DEV

CNCL

is

key.

not

2-24

)(

*><

-Operator

This message means
quested printer-related function. Press the RESET key to restore the keyboard.
Appropriate follow-on action depends upon the key
appears in the printer assignment positions on the right side
Information Area.

1.

After the Print (

•

If

CJ-CI??

IDENT key to cause
request a print.

• If nothing
Information Area,

key to restore the keyboard and take other action.

•

If

nothing
Area, you have no automatic authorization.
restore the keyboard. If a printer
assignment by using the IDENT key, plus two valid numerals.

•

If

CJ-CInn

tion matrix (for example, the printer's buffer
size, or Device
key to restore the keyboard. Request assistance, use the IDENT function
to select a different printer, or take other action.

2.

After the IDENT key plus two numerals:
You are not authorized for the printer you specified. Press the RESET key

to restore the keyboard;
action.

3.

Immediately after the IDENT key:

You are
Operator Information Area and nothing in printer assignment columns).
Press the RESET key to restore the keyboard, and take other action.

not

Not

Authorized

that

your

display station

D-Q

) key:

is

displayed, you should press RESET and then use the

your

new assignment to be displayed before

is

displayed and a ~ is

you

are

not

authorized to print at all. Press the RESET

is

displayed and a ~ is

is displayed, there is an error [mismatch?] in the authoriza-

"nn"

is

really a display,

then

start the IDENT procedure again or take other

authorized

to

print at all (a ~ is

is

not

authorized to do the

you

used and upon what

of

the Operator

not displayed in the Operator

displayed in the Operator Information

Press the RESET key to

is

available, you can establish an

is

too

small for your display

not

a printer). Press the RESET

not displayed in the

re-

you

)(

0-.,

-Security Key

This message means the security keylock on your display station

the key clockwise.

)(

*g'('-

Questionable Card

This message appears during a magnetic slot reader or magnetic hand
scanner operation if the magnetic stripe card cannot be used. Press the

RESET key to restore your keyboard;

)( * ...

+':--

,)(

*

...

+':;',)( 1::.'+,?,)( *

Accent Plus What? (Canadian French Keyboard Only)

you

This message means
tion so the accent has become a stand-alone character.
restore your keyboard; then re-key
Key descriptions in the keyboard section.

have entered an invalid accent and character combina-

then

try another card or request help.

.....

+'?,)(

both

the accent and the letter. See the Dead

*

..

+'?-

Press the RESET key to

is

off. Turn

Chapter

2.

Controls and Indicators 2-25

Valid accent and character combinations are:

","'"

aAeE

uU

'eE

AaAeE;;oOliu

..

~E

r

'j

~

u -

.c;C

)(

-:S - Minus Symbol

This message means the symbol
control unit.

)(

CJ+-f!j

)( - f

)(

~2>:;:::':::

A message from the control
rejected,

*)(

This message means
selection when the

keyboard becomes locked

restore the keyboard.

This message means

the necessary hardware was

Pressing the RESET key will restore the keyboard.

Press the RESET

operator

Press the RESET key

that

you

host

program would

as

a result. Pressing the RESET key will

that

you tried

not

tried

you

keyed

is

not

recognized

key

to

restore

(

to

restore

to

change the

to

select a

present in the display station.

your

keyboard.

00

) was received and

your

keyboard.

PS

or highlighting

not

allow it. The

PS

or highlighting when

by

the

)(

*

--4-

Operator
This message appears when the

key

pressed in the local mode.

Communication Check

operator

under

the wrong conditions; for example, the DIAL key

presses an X.21 function

Reminders

The reminder messages are displayed in the

that

are reminders

~nn

This message means that the communication link that connects
unit to the host system
unable

to

communicate with the

defines the type

your

until

control

CJ+-f!j

a condition occurred.

and

~,,-nnn

is

of

communication problem. This message remains displayed

unit determines the communication link

Reserved for future use (appears

Communication

producing errors.

host

X.21 Switched Network

The

following messages may

-.:­This message
feature installed;

Call Ready

is

used when

it

appears when the terminal

not

appear on all 3278s.

your

terminal has the X.21 Switched Networks

Operator Information Area. They

It

is

a reminder that you may be

system. The error number, nn or

is

with)(

is

ready

CJ+-OO

message). Ignore this symbol.

to

call and

is

your

control

nnn,

working properly.

to

be called.

--~

Nnn

or

nn

Call Ready with Call Progress Signal

If

your

terminal has the X.21 Switched Networks capability, this message appears

is

ready

to

when it
as

the Call Progress Signal (CPS). The

back

to

the terminal
When the
is

displayed.

2-26

network

call and

connection has been established, the In-Use symbol ( N )

to

be called with the status code

to

indicate the status

CPS

is

a signal

of

the

that

network

(nn)

that

is

known

the network sends

or

of

the host system.

-~.:-

u?

Dial

In

(Dialing-Originating Display)

This message appears on the display

and shows
On

that

the terminal

other

display stations, the Dial In (

is

waiting for the dial digit

the same time.

station

at

~,,-nn

which the

) message will

DIAL

number

key

to

be

appear

is

pressed

keyed

in.

at

-~.:-

This message appears

U U Dial

In

(Other

on

Than

display

Dialing Originating Display)
stations

other

than

dial-in. When this message appears, the dial digit

the one originating the

number

the keyboard.

--t---'".;-

This message appears
number
that

~~

This message appears when the
the

network

system

Information

+--~'-

This message appears when

---z-

Outgoing Call in Process

is

keyed

in

and

the terminal

tAnn

or

is

calling the

nn

while an outgoing call

is

in the manual-answer

Area.

Incoming

:,',{:'

Disconnect in Process

after

(I)

the

the

ENTER

host

Outgoing

Call in Process with Call Progress Signal

status

mode,

Call in Process

the

terminal

DIRECT

key

is

key

then

system.

code

(nn

is

in process; for

~

is

being called from

is

pressed

pressed.

or

Nnn)

example,

NO!

appears in

This message appears when the terminal is in the process
the

network

after

receiving the disconnect

command

or

been pressed.

-~~

c1'~1

or

5

Cj

C1

Local

is

in

the

local

This message appears when the terminal
key is pressed, the terminal
communicate,

the COMM

cannot

key

communicate.

must

be pressed.

mode.

For

cannot

or

(2)

The

message means

is

sent

when

the

of

disconnecting

after

the

When

the

terminal

be

entered

the dial digit

back

from

the

host

the

Operator

host

system.

DISC key has

the

LOCAL

to

at

from

Programmed Symbols

When one
station

priate symbol set

symbol set indicators are PSA, PSB, PSC, PSD, PSE,

the

selectability will be shown in the

programmed

of

the

Programmed

has the Programmed

indicator

above symbol sets are

::':

symbol,

operator

as

selection

Programmed

operator

key.

operator

selection

Or, selection was made

selection was

host.

Symbol

Symbol

will

indicated

follows:

is

Symbol

is

Set

appear

and

Operator

permitted

key.

permitted

not

sets (available

feature installed)

in the

Operator

PS selection

Information

and

was

and

was made

by

the

host

permitted;

only

when

your

is

used, the appro-

Information

and

PSF. When

keys

are available,

Area, following the

made

by

pressing a

by

a Field Inherit

program.

selection was made

display

Area.

any

by

The

of

the

Chapter

2.

Controls and Indicators 2·26.1

Shifts

and Modes

The shifts and modes messages displayed in the Operator Information Area,
tell you what shift and mode your keyboard

NUM - Numeric

is

This message
(described in Chapter
numeric field and your display station
are valid in Numeric Mode are 0 through
override the numeric control,
keyboards only). Refer

ALPHA -Alpha

This message
key (

.u.

down

to

APL

-APL
This message
(described in Chapter
keyboard.

pressing the APL ON/OFF key while pressing and holding the ALT key; the
APL message disappears when
(normal)

holding the ALT key.

have selected a Programmed Symbol set.

used when your display station has the Numeric Lock feature

4)

installed. NUM appears when the cursor

use~

orO

to

the keyboard section, also.

is

used when

),

present on Data Entry Keyboards only,

stay in Alpha Mode).

is

used when

your

display station

your

display station (1) has the APL/Text feature

4) installed and (2)

APL appears when

by

pressing the APL ON/OFF key a second time while pressing and

It

you

place the keyboard in APL Mode

you

place the keyboard in Non-APL Mode

also disappears under certain conditions, when you

is

using at the time.

is

located in a

is

in Numeric Mode. The only keys

9,

period (.), minus

('0

key

is

present on Data Entry

is

in Alpha Mode. The Alpha

is

nonlocking (must

is

equipped with a Typewriter/APL

(-),

and DUP. To

be

by

that

held

TEXT

This message
(described in Chapter

keyboard. TEXT appears when

pressing the TEXT
place the keyboard in Non-Text Mode (normal) by pressing the TEXT
OFF
you

i}

The
condition or
are using a Data Entry keyboard

1'\ - Insert

The
pressing the ~ key.
descriptions in the keyboard sections.) The
your

-TEXT
is

used when your display station (1) has the APL/Text feature

4) installed and (2)

you

ON/OFF key; the TEXT message disappears when you

key a second time. It also disappears (under certain conditions) when

have selected a Programmed Symbol set.

-

UP

i}

symbol appears when (1)

(2) the cursor

A symbol appears when you place your display station in Insert Mode

(For

display station

out

of

you

is

located in an upshift

that

a description

Insert Mode.

is

equipped with a Typewriter/Text

place the keyboard in Text Mode by

place

your

keyboard in the upshift

does

not

have the Numeric Lock feature.

of

Insert Mode, refer

A symbol turns

("numeric")

field when

to

the ~ key

off

when you take

Highlighting

The highlighting attribute messages

if

Area,

as

• Character Reversal - m

• Character Blink -

• Character Underscore -

• No character attributes employed - a

your display station has the extended highlighting feature installed, are

follows:

~~.:

s.

that

appear in the Operator Information

ON/

you

by

Chapter

2.

Controls and Indicators 2-27

Although the
no color options on the 3278 Display Station. When any
highlighting attributes are indicated and highlighting
will be shown in the Operator Information Area following the selected attribute
message,

7::

operator selection
Programmed Symbol key.

~

operator selection
selection was made

D operator selection was

as

follows:

PFI5,

18,21,

and 24 keys indicate a choice

is

permitted and was made

is

permitted and was made

by

the host program.
not

permitted; selection was made by the host.

of

colors, there are

of

the above

is

available, selectability

by

depressing a

by

a Field Inherit key. Or,

Printer Status

The Printer Status messages displayed
used during print operations

of

and inform you

c::::J-CJ':"

_ -Printer Selection

The

cl-CJ

__

printer assignment. When
IDENT key operation is completed. The
the two underlined locations

or class, the cursor reappears.

the progress

message appears when

to

CJ-CJ

of

in

the Operator Information Area, are

tell

you

where the print operation

of

the print operation.

you

press the IDENT key

__

appears the cursor disappears until the

next

two numbers

the message. After

See

IDENT key in the keyboard section.

you

you

enter a valid printer ID

is

performed

to

enter a new

enter appear in

c::::J-CJnn

This message tells

ber nn. Numbers
through 85 identify "classes"

If
assignment.
you may use the IDENT procedure (see IDENT key in the keyboard section)
to

c::J-IIIn n - Printer Printing
This message tells you the assigned printer

~nn

This message tells

)(

CJ-CJ??

This means
key,

-Printer Assignment

you

that

your display station

01

through

nothing is displayed in the Operator Information Area,

If

the 3278 is attached

enter the printer number

31·

identify individual printers. Numbers

of

printers.

to

a 3276 Control Unit Display Station,

of

an available printer; otherwise, you cannot print.

is

authorized

is

printing your work.

-Printer Failure

you

the selected printer failed while printing your work.

~

- Printer Not Working.

Assignment Pending

that

your printer assignment has changed.

your

new printer assignment is displayed.

If

to

use printer num-

you

have no printer

you

press the IDENT

70

See

2-28

Oeaning

Proc~dures

To clean the display station screen,
cedures (after turning

off

the 3278):

use

one

of

the following cleaning pro·

• Using Water Only -wipe the screen with a damp soft cloth; then dry the
screen with a clean soft cloth.

• Using Water and Detergent - wash the screen with a clean soft cloth, rinse
with a damp soft cloth, and dry with a soft cloth.

• Using an Ammonia-Based Glass Cleaner -apply the cleaner with a clean

soft cloth; then dry the screen with a clean soft cloth.

Caution: Do NOT use acid solutions or abrasive products such as cleansers

will

or scouring pads, because these products

damage the display station

screen's anti-reflective coating.

To clean the covers, use warm water and a mild detergent.

Use

isopropyl alcohol

to

clean haze and grime

off

the selector light-pen lens.

Chapter 2. Controls and Indicators 2·29

Chapter 3. Keyboards

Contents
Introduction 3-3
Typewriter Keyboard

Introduction 3-7
Typamatic (Repeat-Action) Keys 3-8

.'

Shift (
ALT (Shift)
Alphabet Keys 3-9

Numeric Keys 3-10

Symbol and Punctuation Mark Keys 3-10
DUP

FIELD MARK Key 3-13

PAl and PA2 Keys 3-14

PF1-PF12

PF13-PF24

Data Entry Keyboard 3-17

Introduction 3-17

Typamatic (Repeat-Action) Keys 3-18

Numeric

Numeric Lock

Alpha (

ALT (Shift) Key

Alphabet Keys 3-20

Symbol

DUP Key 3-22

Similar Keys

3-1

3-7

1l-

) and Lock (

Key

Key 3-13

Keys 3-14

Keys 3-15

Shift ( A

(\!J

.ij.

) Key 3-19

Numeric Keys 3-21

and

Punctuation Mark Keys

FIELD MARK
PAl,

PA2, and PA3 Keys 3-23
PF1-PF10
Blank Keys (in Numeric Mode) 3-24

Introduction 3-25
Spacebar
Cursor Control Keys 3-25

Moving

. New Line Key 3-26

Key 3-22

Keys 3-24

on

Typewriter and Data Entry Keyboards 3-25

3-

25

the Cursor to the Beginning

l?J

3-9

0)

Key 3-19

) Key 3-19

3-20

) Keys 3-8

3-21

of

a Field 3-26

Tab

Key

3-28
Skip Key (Data Entry Keyboard Only) 3-28
Back Tab Key 3-29
Home

( 0 ) Key 3-30

Moving

the Cursor One or Two Character Spaces 3-30
Horizontal Positioning Keys 3-30
Double-Speed
Vertical Positioning Keys 3-31
Backspace Key

ATTN Key 3-32
SYS

REQ Key 3-32
CURSR SEL Key 3-33
CLEAR Key
ERASE INPUT Key 3-35
ERASE EOF Key 3-35
CURSR BLINK Key 3-36
ALT

CURSR Key 3-36

Print (

O-D

IDENT Key 3-38
Qick

(

c:!l

TEST Key 3-39
RESET Key 3-40
DEV CNCL Key 3-40
Insert ( .!I
Delete (
ENTER Key 3-43
Dead Keys (Canadian-French Keyboard

Attribute Select Keyboards

~

Introduction
Attribute Select Typewriter Keyboard

Attribute Select Typewriter/ APL Keyboard 3-46
Attribute Select
Attribute Selection Keys

Highlighting Selection Keys 3-47

Programmed Symbol Set Selection Keys

Field Inherit Keys 3-48

Horizontal Positioning Keys 3-30

3-31

3-

34

) Key 3-37

) Key 3-39

~

) Key 3-41

) Key 3-43

346

Overlay Keyboard 3-46

346

347

Only) 3-44

346

347

Chapter 3. Keyboards 3-1

Introduction

Having a keyboard
of

most 3278 Display Stations, the keyboard will be their main contact with the

display station and, through it, with the host system.

The keyboard controls the display station and provides a means
program.

The 3278 operates like a typewriter. Without looking
can easily find the home row keys. The F and J keys on typewriter keyboards
have deeper than normal depressions
the three numeric keys

Typing on the keyboard prints the characters on the screen instead
This
cursor

you have keyed except functions and non display fields because the document
is

always visible.

Your keyboard contains a clicker
You can
board.

• When

• When

It

is

an improvement when
to

the error, and key in the correct character . You can check anything

turn

It

is

you
is operational and that the data
case, absence

you
the keyboard
In this case, the presence

as

part

of

a 3278 Display Station

is

through the keyboard

on

the home row (4, 5, and 6) have this deeper depression.

the click

important to know that generally:

have the clicker turned on, the click tells

have the clicker turned off, the absence

off

or

on

of

the click indicates

is

operational and

of

that

you

display data

on

the key face. On data entry keyboards,

you

have to correct typing errors.

that

causes a click when

by using the Click (

you

are keying

that

the

keyboard

that

the data you are keying

the click indicates

that

is

optional. To the operators

of

signaling the

on

the display screen.

at

your

keyboard, you

of

on

Just

move the

you

press the keys.

c::n

) key on your key-

you

that

the keyboard

is

being accepted. In this

is

disabled.

of

the click tells you

is

being acoepted.

the keyboard

is

disabled.

paper.

that

of

Therefore, by being aware

of

operation
display station Operator Information Area symbols aid you in correcting the

problem.

Note: For a 3278

of

these keys may be different from those described here.

your keyboard is

not

the clicking, or

not

normal. When operation

attached to a 3274 or to a 3276, the functions

appropriate appendix for a description

of

its absence,

of

those differences.

you

can tell when the

is

not

normal,

Refer

to the

of

your

some

Chapter

3.

Keyboards

3-3

Your keyboard also contains

To

Guide.

access the Guide, press the latch shown in Figure 3-1; the access

your

display station's Problem Determination

panel will spring open. Whenever you have a problem with

to

refer
In addition
Guide contains descriptions
and

the Problem Determination Guide

to

problem detennination procedures, the Problem Determination

of

Operator Information Area symbols.

the display station switches, keyboard functions,

to

determine the appropriate action.

your

display station,

Figure

3-1.

3278 Problem Determination Guide Access

Three types

of

keyboards can be attached

to

the 3278 Display Stations:

• The Typewriter keyboard (Figure 3-2), which resembles a typewriter
keyboard

• Two Data Entry keyboards -

- The Data Entry keyboard (Figure 3-3), which provides the basic data

entry

type

of

keyboard

- The Data Entry-Keypunch Layout keyboard (Figure 3-4), which has the

same keys

as

the

IBM

keypunch (024-026-029-129) keyboard

• Attribute Select Keyboards

- The Attribute,Select Typewriter keyboard (Figure 3-5)

- The Attribute Select Overlay keyboard (Figure 3-6)

- The Attribute Select Typewriter/APL keyboard (Figure 3-7)

Note:

The Typewriter/APL and Typewriter/Text keyboards

Chapter

The main difference

keyboards
numeric keys are all
numeric keys are placed

4.

is

the

that

location

on

the

you

will notice between

of

the

numeric keys. On the Typewriter keyboard,

top

row

of

keys. On the Data Entry keyboard,

on

all four rows around the right-side keys.

the

are

described in

Typewriter and Data Entry

the

the

If

you

are familiar with any

the keys do. The remainder

the

keys

the

Turn

that

third

to

the

describe
respectively;
keyboards.

3-4

of

these keyboards,

of

this chapter has three subdivisions:

are different

on

the

describes the keys

heading

that

applies

you

already know what most

the

first two

Typewriter and Data Entry keyboards,

that

are similar

to

your keyboard.

on

the

two types

of

of

Figure 3-2. Typewriter Keyboard

Figure 3-3. Data Entry Keyboard

Figure

3-4. Data Entry-Keypunch Layout Keyboard (See Note)

Note: Check the positions

through PF8, and
is

attached to

PF10 keys to determine which type

your

display station.

(See Note)

of

the RESET, ENTER, New Line, Backspace, PF2

of

Data Entry keyboard

Chapter 3. Keyboards 3-5

ATTN

C~:~R

~mmmmmmmmmml=)ml-l

:~~

CLEAR

D88GGGGGGGGGGc=J

8

~~

00000000000B8~

CURSR

r:;)

[(;l~ls)Io1r;)f;)(;)r;)(;1/L)mr:1m

:;~:

D

~D6cJDDcJDDtJtJDtJ

R

[:]

08

mm

J

tJt:J

~~~

f!)

;~~

~Red

PAl

0

PBD

§-Pink

~::

f:!)

6

~:.:

psc

B-Blue

';.~

19-T~~;"

~~

0000000008880

~----~@~

Figure 3-5. Attribute Select Typewriter Keyboard

~~

~~~~'.

Figure 3-6. Attribute Select Typewriter/

Figure 3-7. Attribute Select

3-6

Overlay Keyboard

APL

Keyboard

Typewriter Keyboard

Introduction

The 3278 Typewriter keyboard resembles a typewriter keyboard in appearance

and key layout. In fact, most
same name

on

a typewriter keyboard.

of

the keys do the same thing

as

the keys

of

the

Many different types

each one has unique needs and, possibly, special character requirements.
provides many versions

of

needs
versions are small, and
defined under the heading
other difference in versions

additional keys, PF13-PF24, located to the right
keys. These keys are discussed under the heading

The ,characters
lowercase alphabetic characters,
punctuation
format and enter an
causes the character indicated
position marked

Keys
ing
displays when the character key is pressed and the keyboard
mode (the
must hold
press and release

Some
keys are called alternate function keys. To cause the function
function key to be performed, press and hold the Alternate
down and press the desired alternate function key.

everyone who uses 3278 Display Stations. Differences between

marks. The keyboard also contains the keys

that

have two characters

upon

the operation

Shift

the

of

the keys have a function name

of

organizations will use the Typewriter keyboard, and

of

the Typewriter keyboard in an

they

affect only a few special symbols. All symbols are

"Symbol

is

that

can be entered and displayed consist

input

message. Operation

by

the cursor.

of

the Shift and Lock

1l'

key

not

Shift (

the

1l'

) key down while pressing the character key or

Lock (

and Punctuation Mark Keys." The only

that

your

keyboard

10 numeric characters, and 32 symbols and

on

the key to be displayed

on

their faces can display either

depressed). To display the upper character,

&J

) key before pressing the character key.

or

symbol

attempt

of

(1l'

mayor
of

any

may

the normal typewriter

"PF

13-PF24

of

26

that

of

the

on

~)

keys. The lower character

on

the

front

to

meet the

not

have

Keys."

uppercase and 26

are required to
character keys
the screen

of

them,

is

in the unshifted

of

them. These

on

an alternate

Shift (ALT) key

IBM

the

12

in

the

depend-

you

turn

After reading this section,
Keyboards," in this chapter, for descriptions
writer keyboard.

to

"Similar Keys

of

on

Typewriter

other keys

and

that

are on a Type-

Data Entry

Chapter

3.

Keyboards 3-7

Typamatic (Repeat-Action) Keys

Most

of

the keys are called typamatic keys. This means that they have the abil-

ity

to

repeat their characters or their function automatically

keys that have this capability are shown in Figure 3-8.

Figure 3-8. Typamatic (Repeat-Action) Keys

if

held down. The

The discussion

Shift ( il' ) and Lock (

The Shift ( il') and Lock (

When either the left or the right Shift key

the dual character keys will display when their respective keys are pressed.

When either Shift key

character
the lowercase character

A,aIA switch

the program recognizes the difference between uppercase and lowercase alpha­betic characters. The Shift keys are nonlocking and must be held down.

Pressing the Lock (
dition. When the Lock key
and

both

return the keyboard to the unshifted (lowercase) condition. This releases the

lock.

When the Numeric Lock feature (described in Chapter 4) is installed on the

Typewriter keyboard, the Numeric Lock feature can be overridden to enter all
uppercase characters and symbols by pressing and holding the Shift (

and pressing the desired character/symbol keyes). However, the lock ( @ ) key

does not override the Numeric Lock feature.

of

each key also mentions the typamatic capability

&J

) Keys

&J

) keys operate like those on a typewriter keyboard.

is

pressed, the upper symbols shown on

is

pressed when

is

displayed;

is

hands are free for typing. Press either Shift key when you are ready to

if

no Shift key

is

displayed

set

to

A, only uppercase alphabet characters are displayed,

tD

) key locks the keyboard in a shifted (uppercase) con-

is

used, you do not have

an

alphabet key

is

pressed when an alphabet key

(if

the A,aIA switch

is

pressed, the uppercase

is

to

hold the Shift key down,

set

to

if

it applies.

A,a).

is

pressed,

If

the

but

il' ) key

3-8

ALT

(Shift) Key

The ALT (Alternate) Shift key

The alternate function keys are the keys

on

the front
TEST, DEV CNCL,
Positioning (
alternate function key to be performed, you must press and hold the ALT key
down and press the desired alternate function key.

of

them: SYS REQ, CLEAR, ERASE INPUT, ALT CURSR, IDENT,

PAl,

....

and--..),

is

used to enable the alternate function keys.

that

have a function name or a symbol

PA2,

PFI

through

and 0 (Home). To cause the function on an

PFI2,

Double-Speed Horizontal

Alphabet Keys

The characters on the faces
uppercase (capital) letters when the keys are used in conjunction with the
Shift (

out

A,a/A switch

Figure 3-9. Alphabet Keys

11'

) and Lock (

the Shift or Lock keys, the letters are displayed

is

set to A,a). All the Alphabet keys are typamatic

of

the Alphabet keys (Figure 3-9) are displayed

(fJ

) keys. When the Alphabet keys are used with-

as

lowercase letters (if the

ifheld

as

down.

Chapter

3.

Keyboards

3-9

Numeric Keys

When pressed with no shift, each
digit shown on the lower half
held down, each key displays the symbol shown on the upper half
When operated with the ALT key held down, the keys become

10.

All

PF

Figure 3-10. Numeric Keys

the numeric keys are typamatic

of

the Numeric keys (Figure 3-10) displays the

of

the key. When operated with the Shift key

PFI

if

held down.

of

its face.

through

Symbol

These characters are divided into two groups because
The first group contains the symbols that are located on the upper part

keys that have the numerals 1 through

contains those characters located on keys that have two symbols on them. The
symbol that appears

or the Lock key to display it. Figures
symbols and
mark keys are typamatic

and Punctuation Mark Keys

0 on the lower half. The second group

on

the upper half of a key requires pressing the Shift key

3-11

give

the name

of

each symbol.

if

held down.

of

their physical locations.

and 3-12 show the locations

All

the symbol and punctuation

of

of

the

all

3-10

Numeric

~

2

3

4

5 %

~

7

8
9

0

Note:

not

Typewriter

(vertical

}

See

Note

}

See

Note

The

illustrated,

bar)

Key

exclamation

but

keyboard

and

IOQical

are

point

present

in

place

NOT

Upper

I

@

~

--r

$

A

&

and

on
of
sign.

Half

of

logical

OR,
exclamation
at

sign
number
dollar

sign
percent
logical
circumflex,
ampersand
asterisk
left

parenthesis

right

parenthesis

circumflex

the

3278

the

logical

Numeric

vertical

point

sign

sign

NOT

sign

caret

(caret) are
ASCII
OR

Key

bar

Figure 3-11. Some symbols are located on numeric keys.

Chapter

3.

Keyboards 3-11

Lower

{

< =

Note:

the

cent

Symbol

grave accent
minus

equals sign
cent
back slash
semicolon
apostrophe

left

brace

less

than
comma
period
slash

The opening

3278

ASCII

sign.

sign

sign

(See

Note)

sign

(lowercase)

(lowercase)

and

closing brackets [J

Typewriter keyboard in place

Upper

Symbol

tilde
underscore
plus sign

+

exclamation
broken
colon
quotation
right
greater than sign
comma
period (uppercase)
question

are

not

illustrated,

of

the exclamation

vertical bar

mark

brace

(uppercase)

mark

but

point

are present on

point

Figure 3-12. Some keys contain only symbols and punctuation marks.

(See

and

Note)

3-12

DUPKey

Pressing the DUP key displays an overscored asterisk ( * ) when the A,aIA

switch

is

set to

A,a~

when the A,aIA switch

played. Also, as a result, the cursor advances

the next input field.

is

set

to

A,

only the asterisk

to

the first character location

is

dis-

of

:ffi'·

B-

=,

PFl2

''''

'

·~uP

PAl

'''<0

,

MARK

PA2

The DUP operation
the information
DUP key causes a special code to be sent to the host system which tells the

program that a duplication operation

with, however, determines the

appropriate person in your organization about its use or refer

user's program guide.

FIELD

Pressing the FIELD MARK key displays an overscored semicolon (
the
semicolon
an unformatted display to indicate the end

MARK

A,aIA switch

is

is

intended to provide you with a fast method

that

is

the same for every document (such

is

needed. The program you are working

use

of

the DUP key. To verify its use, ask the

Key

is

set

to

A,a~

when the A,aIA switch

displayed. The FIELD MARK key is used when operating with

of

a field to the program.

is

set

of

filling in

as

the date). The

to

the appropriate

-;)

to

A, only the

when

8tij0t~~J

1

B

o

.~.

J

00

~@;

Chapter

3.

Keyboards 3-13

PAl

and

PA2

Keys

P

Al

and PA2 are Program Access (P A) keys, and they perform the function

that

their name implies;
or communicating with it. The
and can only be used when the ALT key

is

station
appears
programs, when replying to these keys, turn
this
the time also determines
the use
tion about the use
guide.

signaling the program, the Do Not Enter - Time (

in

the Operator Information Area, disabling your keyboard. Most

is

up

to

the program. The program that

of

the

PAl

that

is, they provide a means

PAl

and PA2 keys are alternate function keys

is

held down. While your display

off

is

how

these keys are used.

and PA2 keys, ask the appropriate person in your organiza-

of

PAl

and P A2 or refer

to

of

signaling the program

)(

the Time message. However,

operating in the host system at

If

you

are not familiar with

the appropriate user's program

·:f

) message

PFl-PF12

Application programs can assign programmable functions to the Program
Function
keys on the front
PFl2

keys are alternate function keys and can be activated only while

the ALT key

Figure 3-13. PF1-PF12 Keys

Keys

(PF) keys. On

of

the top row keys (Figure 3-13). The PFI through

is

held down.

the

7S-key Typewriter keyboard there are 12 PF

3-14

Application programs can define the action that occurs when

keys

is

pressed.

specific needs. This adds flexibility
more powerful input devices.
on the screen with a different one whenever

By

doing this, each program can tailor

to

the 3278 keyboards and makes them

One program might replace the document

PFI

is

pressed with the ALT key

held down. When you are working with a different program, pressing

you

ALT might be a signal that

have keyed in

all

the source data that you have

the

keyboard

anyone

of

the PF

to

fit its

PFI and

available.

of

each

PF

To determine the use
person in your organization how the

key and the action it causes, ask the appropriate

PF keys are used

or

refer

to

the appropriate

user's program guide.

The

PF

keys

are

Note:

that

you

do

not

typamatic when held down; however, it

use the

PF

key

typamatic capability, because the results

is

recommended

are

unpredictable.

PF13-PF24 Keys

The PF13 through PF24 are keys
They serve the same function as the

not alternate function keys, and you do not use the ALT key when you press

them.

that

your keyboard

PF

1 through

mayor

PF

12 keys. However, they are

may not have.

Chapter

3.

Keyboards 3-15

Data Entry Keyboard

Introduction

Only the basic Data Entry keyboard (Figure 3-3)
Both types
Keypunch Layout) contain the same keys.
locations; however, the functions performed are identical on

of

Data Entry keyboards (basic Data Entry configuration/Data Entry

Some

is

discussed in this section.

of

the keys are

both

at

different

keyboards.

The Data Entry keyboard combines the features

of

those
ing to the typewriter touch system, and a group
purposes, for digits
sponding keys on a keypunch keyboard. A three-finger touch system for the
numeric keys can be used from the normal home position
board. The touch system for the
and 7; middle finger for the 2, 5, and 8; and ring finger for the

All
The character displayed
Mode
state
press the key with the keyboard in this mode. To display the upper character,
you must shift the keyboard into Numeric Mode. This

Numeric

discussion

Some

keys are called alternate function keys. To perform the functions

.

of
the alternate function key. To do this, press and hold down the ALT(Alternate
Shift) key, then press the desired alternate function key.

Whenever the cursor enters a program-defined numeric input field on your screen,

the display station will automatically shift the keyboard into Numeric Mode.
Without shifting your hands from the home position or pressing any keys to shift
modes, you can key a numeric field with the right hand only.
the numeric field, your left hand
After you have keyed your input digits into the field, and
numeric field, the keyboard shifts back to Alphabetic Mode. This permits you
to

the familiar keypunch keyboard. The alphabet keys are arranged accord-

as

well

as

letters. These keys are arranged like the corre-

10 numeric keys

other keys that have two characters on the key face also have two purposes.

is

determined by whether the keyboard

or Numeric Mode when the key

of

the keyboard, and the lower character on the key face displays when you

Shift key ( 0 ) or the Numeric Lock (

of

these keys

of

the keys have a function name or symbol on the front

these keys you must shift the keyboard into Alternate Mode and then press

key an alphabetic field with

is

presented later.

is

pressed. Alphabetic Mode

is

free for document handling

both

hands.

of

the typewriter keyboard with

of

the right-hand keys serves two

of

the alphabetic key-

is:

index finger for the

0,3,6,

is

done by pressing the

&J

) key. A more detailed· .

While

as

the cursor leaves the

and 9.

is

in Alphabetic

is

the normal

of

them. These
on

the front

keying in

if

it

is

required.

I,

4,

Chapter

3.

Keyboards 3-17

You may encounter situations where the cursor has entered a program-defined
numeric input field (thereby placing the keyboard in Numeric Mode) and you
must enter one or more alphabetic characters. The Alpha (
provided to enable

you

to

enter alphabetic characters into a program-defined

numeric input field. To enter alphabetic characters when the keyboard

().

) shift key

is

is

in
Numeric Mode, press and hold the Alpha shift key, and then key in the desired
alphabetic character or characters.

After reading this section,
Entry Keyboards," in this chapter, for descriptions

turn

to

"Similar Keys

on

Typewriter and Data

of

other keys on the

Data Entry keyboard.

Typamatic (Repeat-Action) Keys

Most

of

the keys are called typamatic keys. This means

ability

to

repeat their characters or their function automatically if held down.
The keys that have this capability are shown in Figure 3-14. The discussion
of

each key also mentions the typamatic capability if it applies.

that

they have the

Figure 3-14. Typamatic (Repeat-Action) Keys

3-18

Numeric

Pressing the Numeric Shift

for
shown on each key
key
feature

Shift

( 0 ) Key

(0

) key shifts the keyboard into Numeric Mode

as

long

as

the key

is

nonlocking and must be held down. This key overrides the Numeric Lock

(if

installed).

is

held down. Numeric Mode causes the

to

be displayed when

that

key

is

top

pressed. The Numeric Shift

character

00

8 0

:~E

ALT

@J

CURSR

~t

Numeric

Press the Numeric Lock (
into Numeric Mode and it

key down while completing your operation. The keyboard remains locked until

you press the Numeric Lock key again. At

Mode. This key does not override the Numeric Lock feature (if installed).

Lock

( @ ) Key

&J

is

not convenient

) key when it

is

necessary to shift the keyboard

to

hold the Numeric Shift ( 0 )

that

time, it shifts back

to

Alphabetic

HM

(01H

BGt=jD

00

8 0

fii)

DO

HM
BGt=jD

r&:'A

(01H

Alpha (

You will remember
screen, the keyboard automatically shifts to Numeric Mode. When one or more
alpha characters must be keyed, and when
field
Alphabetic Mode. The Alpha key

~

) Key

that,

when the cursor enters a numeric field on a formatted

on

a formatted screen, press the Alpha key

is

the

cursor

is

located in a numeric

to

shift the keyboard into

nonlocking and must be held down.

aUlpter

3.

Keyboards 3-19

ALT(Shift)

The ALT (Alternate) Shift key
alternate function keys are the keys that have a function name or a symbol on
the front
TEST,

o (Home). To cause the function on an alternate function key

formed, you must press and hold the ALT key down and press the desired
alternate function key.

Key

is

used

to

enable the alternate function keys. The

of

them:

SYS

REQ, CLEAR, ERASE INPUT, ALT CURSR, IDENT,

DEV CNCL, Double-Speed Horizontal Positioning

(~and

.......

to

be per-

), and

Alphabet Keys

All

but two

Figure 3-15.) The alpha character (on the lower half
display when the key
normal mode). When pressed while the keyboard
these keys displays the digit or symbol on the upper half
Remember that the keyboard
Shift (
key has been pressed once, or (3) whenever the cursor
field.
Alphabetic keys are typamatic

of

the Alphabet keys (A and Z) are dual-character keys. (See

is

pressed while the keyboard

is

in Numeric Mode (1) when.the Numeric

0 ) key

All

alphabetic characters are always displayed

is

being held down, (2) when the Numeric Lock

if

held down.

of

the key face) will

is

in Alphabetic Mode (its

is

in Numeric Mode, each

of

the key face.

(l£J

is

in a formatted numeric

as

capital letters.

All

of

the

)

Figure 3-15. Alphabet Keys

3-20

Numeric Keys

Pressing any Numeric key displays the digit on the upper half

is

when the keyboard

is

key face

displayed when the key

in Numeric Mode. The character

is

pressed while the keyboard

Mode.

Remember

normal mode

of

your keyboard

is

that

the
keyboard automatically shifts to Numeric Mode when your screen
and the cursor enters a numeric field. At all other times,

Numeric Shift or the Numeric Lock keys

to

shift

to

Numeric Mode.

of

on

the lower half

Alphabetic Mode. The

you

must press the

its key face

of

is

in Alphabetic

is

formatted

the

Symbol

The locations

and Punctuation

of

the 25 keys

shown in Figure 3-16.

to

symbol key,

display

face.

@

at

sign

number

percent
comma
asterisk
dollar

less

than
period
minus

and

sign
sign
(upper

sign

sign

(upper

sign

lower

case)

(upper

case)

#

%

$

<

111ark

Keys

that

contain symbols and punctuation marks are

You must press the Numeric Shift key, along with the

the

symbol

case)

+

)

¢

\

I

&

>

that

slash

=

plus
underscore

right

cent

back
vertical
ampersand
greater
colon

appears

sign

parenthesis

sign

slash

bar

than

on

the upper half

sign

of

semicolon

-,

logical
apostrophe
question
quotation

equals sign
exclamation
left
comma

period (lower case)

the key

NOT

mark

mark

mark

parenthesis

(lower case)

Figure 3-16. Symbol and Punctuation

Mark

Keys

Chapter

3.

Keyboards

3-21

DUPKey

Pressing the DUP key displays an overscored asterisk ( * ) when the A,a/A

switch

is

set

to

A,a; when the A,a/A switch

played. Also,
the next input field.

The DUP operation
the information that
DUP key causes a special code
gram that a duplication operation is needed. The program
however, determines the use
priate person in your organization about its
program guide.

as

a result, the cursor advances to the first character location

is

intended

is

the same for every document (such

to

provide you with a fast method

to

be sent to the host system which tells the pro-

of

the DUP key. To verify its use, ask the appro-

is

set to A, only the asterisk

as

the date). The

you

are working with,

use

or refer

to

the appropriate user's

of

filling in

is

dis-

of

FIELD

Pressing

A,a/A switch to set

colon
unformatted display to indicate the end

MARK

the

is

displayed. The FIELD MARK key

Key

FIELD MARK key displays an overscored semicolon (

to

A,a; when the A,a/A switch

is

set

to

A,

is

used when operating with an

of

a field to the program.

-;

) when the

only the semi-

3-22

PAl,

PA2, alld PA3 Keys

PAl,

PA2, and PA3 are Program Access (PA) keys, and

that

tion
or communicating with it. While
Do

Area, disabling

off

operating in

If

your organization

program guide.

their name implies;

Not

Enter - Time (

your

keyboard. Most programs, when replying to these keys,

the Time message. However, this

the

host

system

you

are

not

familiar with the use

about

that

is, they provide a means

your

display station

)(

):.

) message appears in the Operator Information

is

up

at

the time also determines

of

the PA keys, ask the appropriate person in

the use

of

the PA keys or refer

they

perform the func-

of

signaling the program

is

signaling the program, the

to

the program. The program

how

these keys are used.

to

the appropriate user's

that

turn

is

CURS".

fEERAS

..

E.

. .

83.·

.:-' ..

A ...•.... :

......

BLINK

All

CURSR

EDF

HM

. .

..

\!J

(;1M

-

·SC£)t=JD

Chapter

3.

Keyboards 3-23

PFI-PFIO

Application programs can assign programmable funCtions
(PF) keys.

Figure 3-17. Program Function (PF) Keys

Keys

On the Data Entry keyboards there are lOPF keys (Figure 3-17).

to

the Program Function

Application programs can define the action
keys

is

pressed.
specific needs. This adds flexibility to the keyboards and makes them more
powerful input devices.
with a different one whenever
different program, pressing
source data

To determine the use
person in
user's program guide.

The

Note:

that

you

By

that

you have available.

your

organization

PF

keys

do

not

use the PF

doing this, each program can tailor the keyboard

One program might replace the document on the screen

PFI

is

PFI

might be a signal

of

each

PF

key and the action

how

the

are

typamatic when held down; however,

key

typamatic capability, because the results

that

occurs when

pressed. When

PF

keys are used or refer

you

that

it

anyone

are working with a

you have keyed in all the

causes, ask the appropriate

to

it

of

the PF

to

fit its

the appropriate

is

recommended

are

unpredictable.

Blank Keys (in Numeric Mode)

When

the

keyboard

is

cursor
top

On a
is
the cursor to move.

in an input field, the A and Z keys generate a space when pressed. The

portion

in Numeric Mode; pressing either key when in Numeric Mode does

of

3278

connected to a 3276, the A and Z keys are ignored when the keyboard

of

a 3278 connected to a 3274

these keys

is

blank.

is

in Numeric Mode and the

not

cause

3-24

Similar Keys

on

Typewriter and Data Entry Keyboards

I ntroductio

Many

locations and functions. The remainder

of

the keys

11

on

the Typewriter and Data Entry keyboards have similar

of

this chapter describes these keys.

Spacebar

On the 3278, unlike a typewriter or a keypunch, a space

character that occupies a position on the screen. When the

is

pressed, a space
present in that position (even
example, a character in a nondisplay field). For this reason, the Spacebar should
not be used to position the cursor. The Spacebar

is

entered on the screen and replaces whatever character

if

that

character

is

not

is

considered an actual

Spacebar (Figure 3-18)

displayed on the screen; for

is

typamatic

if

held down.

is

Figure 3-18. Spacebar

Cursor Control

These keys have a common function. They provide a means
the cursor without affecting any

See Figure 3-19.

Figure 3-19. Cursor Control Keys

Keys

of

the information already

of

positioning

on

the screen.

Chapter

3.

Keyboards 3-25

Because the position
is

entered, it

is

the screen. Also, you will want to be able

of

the cursor determines where the next character you key

important to know how to move the cursor to any location on

to

move the cursor around quickly to

correct any errors you detect while working.

These keys are divided into two types:

1.

Those that move the cursor to the first character location

2.

Those that move the cursor one or two character positions

in

an input field.

at

a time.

Moving the Cursor

New Line
location

Key.

of

to

the Beginning

The

New

Line key moves the cursor

of

a Field

to

the first input character

the next line in which you can type. This new cursor location

pends on the existing data displayed and on the screen format.

When the New Line key

pressed, there are

five

possible new cursor locations

is

where you may begin entering data:

1.

If

the screen

next

line.

2.

If

the screen

described

cursor

a.

A character position within the

Figure
location past the protected field called

b.

The

example
is

present at the first character position in the next line; therefore, the

cursor

A character position on the first new line available.

c.

is

unformatted, the cursor

is

formatted, the cursor moves

in

the following examples (the New Line key

is

located at A in Figure 3-20; then, the cursor moves to location

3-20. In this case, the cursor

is

moved

to

the first position

to

one

of

three locations

is

next

line,

as

shown in the top example in

is

placed in the first input character

"ITEM DESCRIPTION:".

first character position in the

of

Figure 3-20. In this case, no protected field or character

is

positioned at the left margin in the next line.

next

line,

as

shown in the middle

It

the first new line contains all protected fields. Therefore, the cursor

is

must keep searching until a new line

found that contains an input

field.

3.

If

all character positions on the screen

tioned to the first location on line

1.

are

protected, the cursor

de-

in

the

as

pressed when the

B):

may happen that

is

reposi-

The New Line key

3-26

is

typamatic and moves the cursor quickly from line to line.

Figure 3-20.

New

Line Key Operations

Chapter

3.

Keyboards 3-27

Tab Key. Pressing the Tab key moves the cursor to the right to

character location

the cursor

is
just finished keying
press the Tab key
to

begin keying in that information.

Tab

the

key when the cursor

of

the next input field. In the top example in Figure 3-21,

located in the field entitled "ADDRESS". The operator has

"RED ROAD, ARVADA, COLORADO" and could now

to

move the cursor quickly to the next input field, "DATE",

In

the examples

is

located at A moves the cursor to

in

Figure 3-21, pressing

H~e

first

B.

Pressing the Tab key moves the cursor to the first location on line I

is

not formatted or if there are no input fields. Tab also has typamatic capability

that

allows you

SKIP

Key
the SKIP key are identical with those
tion

of

the Tab key). Both keys have typamatic capability that allows you

to

move the cursor quickly from field to field. This duplication

is

provided for operator convenience. The Tab key

keyboard, and the SKIP key

to

move the cursor quickly from field to field.

(Data Entry Keyboard Only). The purpose and the operation

of

the Tab key (refer to the descrip-

is

on the left side

is

nearer the right side.

if

the screen

of

function

of

of

the

Figure 3-21. Tab

3-28

Key

Operations

Back Tab Key. The Back Tab key moves the cursor back

top

position in an input field. In the
is

pressed, the cursor moves from the end

to

the

first character location

If

the cursor

is

already in the first character position

in

example in Figure 3-22, when Back Tab

of

the ADDRESS field (location A)

that

field, the R in RED.

to

the first character

of

an input field, and if

you press the Back Tab key, the cursor will then move back to the first

of

character position

the preceding input field. This case

example in Figure 3-22. When the operator was about

CODE"

at location

A,

it was noticed

that

the

"QTY

is

shown in the lower

to

enter the "MFG

ORDERED" entry

was

missing. Therefore, the operator pressed Back Tab, which moved the cursor

the

back to

first character position

Pressing the Back Tab key moves the cursor to the first location

is

screen

not formatted

matic, allowing

you

or

if

to

move the cursor quickly from field

of

the QTY ORDERED field.

on

there are no input fields. Back Tab also

to

field.

line 1 if the

is

typa-

Figure 3-22. Back Tab

Key

Operation

Chapter

3.

Keyboards 3-29

Home (
down moves the cursor to the first input character location
your screen
key moves the cursor
if held down.

Moving the Cursor One or Two Character Spaces

CJ

) Key. Pressing the Home (

is

unformatted or

to

the first location

EJ

) key while holding the ALT key

if

there are no input fields, pressing the Home

on

line

1.

The Home key is typamatic

on

your screen. If

Horizontal Positioning

keys

(right-.or
character position at a time. The keys are typamatic
cursor any distance quickly with only one pressing
down the key that moves the cursor to the right, the cursor moves
right side
explained in Chapter
reappears one line higher

Double-Speed Horizontal
double-speed horizontal positioning keys

holding the ALT key down moves the cursor in the direction

arrow, two character positions at a time. The keys are typamatic
you can
positioning keys. When using these keys, the cursor wraps at the right
and left sides
horizontal positioning keys.

of

the screen and reappears one line lower on the left side (as

move

the cursor at twice the speed

of

Keys.

Pressing either

left

-+-

) moves the cursor in the direction

2).

The cursor also wraps when moved
on

the right

Positioning

the screen in the same manner

side

of

Keys.

(right-..or

of

the two horizontal positioning

of

the arrow, one

so

that you can move the

of

the key. If you hold

off

to

the left and

the screen.

Pressing either

of

the normal horizontal

as

when using the normal

left

.....

of

the two
) while

of

the

so

the

that

3-30

Vertical Positioning Keys. Operating the two vertical cursor positioning keys

t or down t ) moves the cursor in the direction

(up
at a time. The keys are typamatic to allow you

of

number
positioning kcy
reappears in the same character position,
line)

lines quickly and with only one depression

is

held down, cursor wrap occurs. In this casc, the cursor

of

the screen

that

it occupied before moving

on

the opposite edge

of

the arrow, one line

to

move the cursor any

of

the key. If a vertical

(top

off

the screen.

or

bottom

Backspace Key. Pressing the Backspace key moves
to

the left for each depression
horizontal (left) positioning key and also
key function

is

provided for operator convenience.)

of

the key. This key operates exactly like the

is

typamatic. (This duplication

the

cursor one location

of

Ompter

3.

Keyboards

3-31

A

TTN

Key

The ATTN (Attention) key performs the function that its name implies;

of

it provides a means
erative only
ATTN key

the Minus Function (

Area.

While your display station
sage comes

Most programs, when responding
ever, this is up
at the time determines how the ATTN key
the program's response

your

in
user's program guide.

when].

is

pressed when

on

in the Operator Information Area, disabling your keyboard.

to

organization about the program's response or refer

getting the program's attention. The ATTN key

is

displayed in the Operator Information Area;

.a

is

displayed in the Operator Information Area,

)(

- f ) message comes on in the Operator Information

is

signaling the program, the Time (

to

this key,

the program. The program

to

an ATTN key depression, ask the appropriate person

is

turn

off

the Time message.

that

is

operating in the host system

used.

If

you are not familiar with

to

if

)(

:./: )

the appropriate

is

the

that

op-

mes-

How-

is,

.~.

(........... . '<-+1

:8·'·····~··········E§········"··:

i

.'

'.

..

ERASE'.'

",UT . .•

•..

"

Bfd~'

.....

'. .

...

.. • ..•••••..

,..

•.

,

~H~mn

888D

SYS

REQ

Key

The SYS REQ (System Request) key
used only when you are holding the ALT key down. The function
key performs depends upon whether an

Operator Information Area.

the

When the

the
host system to tell the program
you have keyed a test request message. If you are

for Test procedures, ask the appropriate person in your organization about the

procedures.

When the

the

to

be cleared and (2) switches your display station between application and con­trol programs. Ask
tion
appropriate user's program guide.

.a

symbol

SYS REQ key (with the ALT key held down) sends a unique signal to the

B symbol

SYS REQ key (with

of

the use

of

is

displayed in the Operator Information Area, pressing

is

displayed in the Operator Information Area, pressing

the

ALT key held down) (1) causes your display screen

the

appropriate person in your organization for an explana-

the

SYS

REQ key when

is

an

alternate function key and can be

that

.a.

or a

].

symbol

that

your display station may be failing and that

not

~

is

displayed or refer

is

displayed in

familiar with the Request

to

this

the

~

88·

" . . ,

,

8~§

~

..•..........•.•....•

ERASE

····

.'

. .

?'"

,

.

3·32

CURSR SEL Key

The CURSR SEL (Cursor Select) key provides the same function provided by

the Selector Light

a list or a table

screen with selectable fields

Pen feature. In most applications for the CURSR SEL key

is

displayed for you

to

select items from it. An example

is

shown in Figure 3-23.

of

a

Figure 3-23. CURSR SEL Key Selectable Fields

There are two types
(1) selection fields and (2) attention fields.

to

(1) select items in selection fields and (2) notify the program

by

tion

The first character

character. The designator character for a selection field

( ? ) or a greater-than sign ( >

field

selecting an attention field.

is

an ampersand character ( & ) or a blank position.

of

selectable fields that can be displayed

of

each selectable field on your screen

on

your screen:

You will use the CURSR SEL key

of

your selec-

is

called a designator

is

either a question mark

);

the designator character for an attention

Chapter 3. Keyboards 3-33

Initially, the designator characters in most
will be question marks. To select an item (field), position the cursor within the

that

you

want

to

selection field

at

question mark

to

indicate

sign

If

you

select the wrong field,

again with the

question mark and deselects the field. The correct field can then be selected.

you

After
tion

can be made), locate a selectable field (attention field)
sand character or a blank position for a designator character. Selecting the
attention
cates

have selected can now be acted upon by the program.

field turns

to

the program

the beginning

that

the field has been selected.

CURSR SEL key. This changes the greater-than sign back to a

have completed your selections from

on

the Do Not Enter - Time (

that

select; then press the CURSR SEL key. The

of

the selected field changes

you

can correct your mistake

you

have completed

of

the selection fields on your screen

to

a greater-than

by

selecting the field

the

screen (more than one selec-

that

has an amper-

)(

·:f

) message and indi-

your

selections. The data you

The way you end a

job

could be different. Always refer to the user's program guide for the pro-

gram with which

CLEAR

Pressing the CLEAR key while holding the ALT key down (1) erases or blanks
every character location
(2) establishes an unformatted display, and (3) positions the cursor to the first
location in line

The CLEAR key does not change the keyboard shift status

station, but

it

display station that
key may cause your display station
character display.

When

ming it
place, the
board. Most programs reply
however,

CLEAR key depression.

a
a CLEAR key depression, ask the appropriate person in your organization about
the program's response or refer

is

on. Also,

the

Key

CLEAR key

that

Do

is

up to the program. Therefore, the Time message may remain

CURSR SEL operation depends on

you

are working for specific instructions.

on

the screen except the Operator Information Area,

1.

it

removes the NUM message in the Operator Information Area

if

you are using a 960-, 2560-, 3440-, or 3564-character capacity

is

formatted for the full screen capacity, pressing

to

be

unformatted as a 480- or 1920-

is

pressed,

the CLEAR key has been pressed. While this signaling

Not Enter - Time ( )( ':l ) message appears, disabling your key-

your

display station signals the program, infor-

to

the signal by turning

If

you are not familiar with

to

the appropriate user's program guide.

the

program, and each

of

your display

the

is

taking

off

the Time message. This,

the

program's response

if

CLEAR

on

after

to

~

88

8 0

R~m8

T~~GJ

LJ

.

3-34

ERASE

Pressing the ERASE INPUT key while holding the ALT key down erases or
blanks all input fields on your screen.

document
which you can enter data are erased. The cursor also moves to the first
character location in the first field in which you can begin keying data.

INPUT

on

Key

the screen, and your job

If

you have a permanently displayed

is

to fill

in

the blanks, all those areas in

~

88

Pressing the ERASE
which there are no input fields does not erase anything
to the first location on line

Pressing the ERASE INPUT key (with ALT) while working with an unformatted
screen erases all character locations and moves the cursor
on line

ERASE

Pressing the ERASE EOF (Erase to End

locations from the cursor location

locations from the cursor

key

1.

EOF

acter locations in the input field in which the cursor

cursor, however, does not move.

are erased.

A possible use
wrong information when keying in a field.
key to return the cursor to the beginning

to

erase the incorrect information, and

INPUT key (with ALT) while working with a screen

but

moves the cursor

1.

to

Key

of

Field) key erases or blanks char-

is

located.

to

to

the last character location

of

this key can be shown

the end

If

your screen

of

the field are erased. The

is

unformatted, all character

on

the

by

assuming that
You could press the Back Tab

of

the field, press the ERASE EOF

then

key in the correct information.

you

on

the first location

All

character

bottom

have entered

line

8

8

~((;l

tJt=:=J

.~~08

88

8~8

Chapter

3.

Keyboards 3-35

CURSR

The CURSR
cursor. Pressing the
blinking causes
cursor blink; press the
with
acter

ALT

By
control which type

alternate cursor (see

down) when
cursor with the alternate cursor (reverse character image). To restore the normal
cursor, press the ALT

BLINK

both

the normal cursor (underline) and the alternate cursor (reverse char-

image).

Key

BUNK

key enables you to control the blink function

"CURSR BLINK key when the cursor

your

cursor

to

blink on and

CURSR BLINK key again. The blink function operates

on

the screen

off

continuously. To stop the

of

your

is

not

CURSR Key

using the ALT CURSR (Alternate Cursor) key with the ALT key you can

of

cursor appears on your screen, the normal cursor or the

Chapter 2). Pressing the ALT CURSR key (with ALT held

the

normal cursor (underline)

CURSR key (with ALT held down) again.

is

on

the screen replaces the normal

3-36

Print (

Pressing the Print
printed
specified by the
mation Area.

If
the Print key, the
portion
nation to the Printer ID
progress
your screen. When the printer begins your print operation, the
sage
the original

If

the Operator Information Area after the

Q-CI)

Key

on

the printer assigned

a Printer Class

of

the Operator Information Area changes from a Printer Class

of

the print operation by observing the Printer Status messages on

is

replaced by a

o-c::J

the printer

is

(Q-CI

) key causes the information on your screen

o--cJnn

was

assigned

nn

portion

~nn

nn

message reappears.

busy, one

to

your display station. The printer used

message on the right side

to

your display station at the time you pressed

of

the

t::J-:-Clnn

of

the printer being used. You can monitor the

message. When the print operation

of

the following

Do

Print key

of

the Operator Infor-

message in the Printer Status

Not Enter messages appears in

is

pressed:

to

be

o--cJnn

is

completed,

is

desig-

mes-

J=1r;)r;)n

,S~LJLJ

The printer
print operation.
Means the same thing
message, except more time
your print request

At this point you can either
or (2) press and hold the ALT key and then press the DEY
the print operation and restore your keyboard. The
when these messages are displayed.

If

the printer is not working (out

a

><

~

the printer cannot perform your print operation and your print request has been
canceled. At this point you should press and hold the ALT key and then press
the DEY
different printer or try
effect when

If

the printer fails while printing your print request, (1) the

(on the right side
message, (2) the Do Not Enter-Printer Not Working (
appears, and (3) your keyboard
the

>.<

hold the ALT key and then press the DEY CNCL key.

message appears in the Operator Information Area. This means

CNCL key

~

to

><

~

of

the Operator Information Area) changes

and

~nn

(1) wait for the print operation

of

restore your keyboard. You may then either select a
to

restore the failing printer. The RESET key has no

is

displayed.

is

disabled. To cancel the operation, remove

messages, and restore your keyboard, press and

is

busy and cannot perform your

as

the

is

is

accepted.

RESET key has no effect

order, unplugged,

out

><

><

CJ-CJ.::(

anticipated before

to

be completed

CNCL key

of

paper, etc.),

~nn

to

~

a

~nn

) message

to

cancel

message

If

you press the Print key when you are not authorized
operation, the Do
appears. Press the RESET key
Operator Not Authorized message description in
appropriate action.

No

Enter-Operator Not Authorized (

to

restore

to

perform a print

><

*><

your

keyboard; then refer to the

Chapter 2

to

) message

determine the

Chapter

3.

Keyboards 3-37

IDENTKey

The IDENT key

Printer ID/Printer Class for a print operation or (2) cause the existing printer

authorization

portion

Status
ganization's operating procedures,

Printer Classes.

is

used with the ALT key

to

be displayed (depending upon what

of

the Operator Information Area). Depending upon your or-

you

to

(1) either request or change the

is

displayed in the Printer

may specify printers

by

Printer IDs or

···8···.····.·.·

..

:.····~.wB··.·.·.····.·.····.·····.·

.

<'

. .

.•..•. : .•.....

'..

~

.",

'.,

A Printer ID number

your

display station

01

through 07;

ID numbers can be

Your organization may separate the printers connected to
Printer Classes. The valid Printer Class numbers are 70 through 85. The class
a printer may be based upon (1) its physical characteristics (speed, character set,
type

of

forms used, etc.), (2) its physical location, (3) security, or (4) which oper­ators are authorized
Class 75 may specify all printers capable
case characters.

If a o-c:Jnn
replaced by a
key held down).
operation. When
operation
Printer Class number for
number appears in the two underlined locations

If

you
appears.
operation again, using the correct

is

completed. You should now enter the two-character Printer ID or

enter an invalid Printer

If)(

is

the address assigned

is

connected

if

your display station

01

through 31.

to

use it. For example, in a particular organization, Printer

message is displayed in the Operator Information Area, it

0-0

__

message when you press the IDENT key (with the ALT

You can now change the Printer ID/Printer Class for a print

o-c:J

__

your

*#?

is

displayed, press RESET and then try the IDENT key

to

a 3276, the valid Printer ID numbers can be

appears the cursor disappears until the IDENT key

print operation; the Printer ID or Printer Class

ID

or

Printer Class number, a

Printer ID or Printer Class number.

to

is

connected

of

printing

a printer

of

by

the

to

a 3274, the valid Printer

your

both

uppercase and lower-

the

o-c:J__

><

control unit.

control unit into

message.

*#?

If

of

is

message

80

.era···Et9···

!H~({;)n

:8~LJtJ

/

If

you request a printer for which

appears.

operation again, using a different

If
displayed in the Operator Information Area. In this case, pressing the IDENT
key (with the ALT key held down) causes the
replaced

(in this case

If
Area,
IDENT key and entering a valid

If
Classes, ask the appropriate person in your organization for an explanation.

3-38

If

><

*><

is

displayed, press RESET and then

the host system changes your printer authorization, the

by a o-onn

you

do not enter two numerals).

nothing

you

is

displayed in the Printer Status portion

you

can establish an assignment

are not familiar with

message

you

Printer ID

that

(if

Printer ID.

your

organization's use

are not authorized, a

or

Printer Class.

o-o??

specifies

your

a printer

new printer assignment

of

the Operator Information

is

available) by pressing the

of

Printer IDs/Printer

)(

*><

try

the IDENT key

o-c:J??

message

to

message

message

be

is

Click (

The Click (
off
is
causes the clicker

It

(t

(t

Therefore,
the

c1J

) Key

r3J)

for

normal

working causes

is

important

When
operational
absence

When

the

keyboard

In

this case,

operation

you

of

you

by

have

the

have

of

operation.

to

and

the

being aware

key

enables

the

clicker

to

operate.

know

the

clicker

the

data

click indicates the

the

clicker

is

operational

presence

your

keyboard

TEST Key

Pressing
station
pressed

1.

2. The

3. All Do

When
described
running tests, press

the

TEST

key

when

to

run

tests

that

with

the

ALT

key

The display screen is cleared.

TEST

message appears in

Not

Enter ( )(

removed

(If

any

your

except)(

of

these messages is displayed,

display

in

your

CJ-C:]'::(

station

3278 Problem Determination Guide. When

the

TEST

you

to

turn

Pressing the Click

to

stop.

Pressing

that

generally:

turned

on,

you

are keying

keyboard

turned

off, the absence

and

the

of

the

click indicates

of

the clicking,

is

not

the

ALT

reside in

the

held

down

the

) messages

control

the

Operator

in

.::(, )(

is in this Test

key

(with

the

the

is

data

you

or

normal.

key

is

following

the

CJ-C]'::(

the

mode,

ALT

keyboard

key

when

the

Click

click tells

being

accepted.

is disabled.

are keying

the

of

its absence,

held

down

unit.

When the

actions

Information

Operator

,and

TEST

key

you

can

held

down)

clicking

the

keyboard

key

a second time

you

the

keyboard

In

of

the

click tells

is

being accepted.

keyboard

perpares

Information

)(

is

is disabled.

you

TEST

occur:

Area.

~

inoperative.)

run

the

you

again.

sound

on

or

clicker

is

this case,

you

can tell when

your

display

key

is

Area are

tests

that

are

have finished

88

8 8

r;;)

..

E

..

~

.....

.

CJc±J

D-Q

. c3l .

....,

TEST.

'f¥J~'

{}

...•

08

Ompter

3.

Keyboards 3-39

RESET

The RESET
the
all Do
)(
sages are displayed.)

The
or

Key

key

is

used

RESET key restores the

Not

Enter conditions

~,and

RESET

receiving data from, the

)(

0--.. • (The RESET key has

key

will

to

recover from Do

keyboard
except

not

operate when

host

)(

system.

Not

and turns

c:J--C]:/

no

your

display station

Enter (
off

><

) conditions. Pressing

the

Do

Not

,)(

t:::l--C):.): , )(

effect when any

is

sending data

Enter

of

message for

«,:'

these mes-

to,

,

Pressing the RESET
the

IDENT

Printer

Operator Information Area.

The
alone accent

The

ID

or

RESET

RESET

key

key

key

key

during an IDENT (Print Ident)

operation

Printer Class

can be used

at

the cursor position.

can also be used

to

number

end. The cursor reappears

is displayed in the

to

cancel a Dead Key operation, leaving a stand-

to

terminate an Insert Mode operation.

nEVCNCLKey

The DEV CNCL(Device Cancel) key, with ALT
recover from a Do Not
key operation.

If

you

initiate

( )(

t:::l--C:/

Area.

If

hold

the

If

you

Printer

matically canceled. To restore
then

press

you
ALT key

initiate

Not

Working (

the

an

or)(

want

an

DEV

Enter ( )(

operation

o-c::((:-

to

cancel

and

then

operation

)(

CNCLkey.

) condition

to

a printer

V:·

the

press

to a printer

~

your

that

is

) message appears in the Operator Information

operation and restore the keyboard, press and

the

DEV CNCL key.

that

is

) message appears and

keyboard, press and hold

key
on

t:::l--Cn

key

held down, is used

that

is caused

busy, a Do

not

working, a Do

operation causes

the screen, and the old

n message in the

to

by

a Print( o-a )

Not

Enter-Printer Busy

Not

Enter-

the

operation is auto-

the

ALT

key

and

~

D-a

".

t3J

!~.

,

@·'·B·····B····

IDEOTtm<

'{}.

"

....

,.....

.

.......•••..

If

the printer failed while printing
Not

Working (
message appear in
remove
press

the

and

3-40

)(

~

hold

the ALT key

)(

~

) message

the

Operator Information Area.

and

~nn

and

then

your

print request, a Do

and

a Printer Failure (

messages, and restore

press the DEV CNCL key.

Not

Enter-Printer

~nn

To

cancel the operation,

your

keyboard,

)

Insert (

The purpose
characters into the middle
that are already displayed there.
in the Insert Mode
the Operator Information Area to remind you

~

of

) Key

the Insert (

of

operation. The Insert Mode symbol ( " ) appears in

~

) key

is

to

allow

you

to

insert a character or

of

an input field without changing the characters

Pressing the Insert key places the keyboard

that

your

keyboard

is

in Insert

Mode.

All the keyboard control keys perform normally when in Insert Mode. Notice,

however,

when any

of

the alphameric keys are pressed in Insert Mode the

that
display station performs a unique operation. The examples in Figures 3-24 and
3-25 explain this operation.

the

In Figure 3-24,
"RED

ROAD, ARVADA, COLORADO" was keyed instead

ROAD,

ARVADA, COLORADO".

information keyed into the ADDRESS field

of

is

incorrect.

"RED

MAPLE

Figure 3-24.

Use

the Insert key to insert missing information.

To correct this error, using Insert Mode,
character position containing the R in the word

RED

(This

~OAD,

is

the position where the word MAPLE should begin.)

ARVADA, COLORADO

Pressing the Insert key places the keyboard in Insert Mode. Now, keying
the word MAPLE, followed by one Spacebar depression, results in the
sequence shown in Figure 3-25.

you

would move the cursor

ROAD.

to

the

of

Chapter

3.

Keyboards

3-41

Key

Pressed

ADDF'ESS:

F'ED

EOA[h

AF.'\/ADA,

(~:CILOF.'ADO

M

A

P

L

E

Space

Figure 3-25. Insert Mode Example

ADDF'ESS:

ADDF'ESS:

ADDRESS:
ADDF'ESS:
ADDF'ESS:

ADDF~ESS:

F'ED

r'lRClAD,

F~ED

r'lAEoAD,

F'ED

MAPF.'OAD,

F'ED

r"lAPLEOAD,

F'ED

r"lAPLEEOAD,

F'ED

r'lAPLE

AF.'\iADA,

AF.'\iADA,

AF.'VADA,

AF.'\/ADA,

AP\iADA,

ROAD,

AF.'\/ADA,

(DLOF'ADD

(OLOF~ADD

(OLOF.'ADO

(:OLDF~ADO

(OLOF:ADO

(OLOF'ADO

The missing word has been inserted without disturbing the data following it.

You may have noticed that,

of

right

the cursor are shifted into the blank positions to the right

displayed character.

hold, the Do Not Enter - Too Much Data (

is

your keyboard

As

a general rule, the number

disabled.

to one character less than the number of blanks remaining in
example, in Figure 3-24, the field titled

the customer's name,

If

you try

"JOHN

as

characters are inserted, all characters to the

of

to

insert more characters than the field can

)(

* > ) message appears and

of

characters you can insert into a field

that

field. For

"NAME"

DOE", takes up 8

is

25 characters long, and

of

those character positions.

the last

is

limited

There are 17 blank positions remaining in the field; therefore, you could insert

16 additional characters.

If

a field

is

a large one and covers more than one line, and
for it, during the insert operation, characters will shift from the end
to

the beginning

To return the keyboard

of

the next.

to

its normal mode

of

operation and turn

if

the situation calls

of

one line

off

the Insert
Mode indicator, press the RESET key or any key or device (selector light pen
or

magnetic slot reader)

that

causes communication with the

host

system (ENTER,

PA Keys, PF Keys, etc.).

The correction made,
position into which you want

3-42

you

would now move the cursor to the next character

to

enter data.

Delete ( f ) Key

Pressing the Delete (

the character occupying the position underlined

character without leaving a blank.

position (and
its use
screen. To correct this error with the Delete key
the position
JUNNE 11, 1972. Pressing the Delete key erases the N, and the characters
the right
made,
you

want

on

is

the case where

of

of

it

you

would now move the cursor

to

enter data.

f)

key when the cursor

All

characters in the field

the same line) are then shifted left one position. An example

you

have incorrectly

the extra N with the cursor pOSitioning key or the backspace key:

move left one space, resulting in:

is

located in an input field deletes
by

the cursor. It erases the

to

the right

typed

JUNNE 11, 1972, on the

you

would move the cursor

JUNg

11, 1972. The correction

to

the next character position into which

of

that

of

to

to

ENTER

Pressing the ENTER key tells the program
message and are ready for the information
the host system. While
Not Enter - Time (
Area, disabling
key depression,
program.
key depression, ask the appropriate person in
explanation

Note:

recommended that

because the results

Key

)(

your

keyboard. Most programs, when acting on an ENTER

turn

off

If

you

are

not

of

its use or refer

The ENTER key

you
are

that
on

your

display station is signaling the program, the Do

V:·

) message appears in

the Time message. However, this is up

familiar with the program's response

to

the appropriate user's program guide.

is

typamatic when held down; however,

do

not

use this ENTER key typamatic capability,

unpredictable.

you

have completed

your

screen

th~

Operator Information

your

organization for an

your

to

be entered into

to

the

to

an ENTER

it

is

Otapter

3.

Keyboards 3-43

Dead Keys (Canadian-French Keyboard Only)

If

you are using a Canadian-French keyboard (shown in Figures 3-26 and 3-27)

five

the

Dead Key causes the accent mark shown on the key

designated by the cursor, but the cursor does not move. The letter
receive the accent must be keyed next. If the accent and letter combination
is
screen and the cursor moves to the next position. The composite character
is

The valid accent and character combinations are:

accent keys (I, \

valid, the composite character (accent mark and letter) appears on the

treated

as

a single· character by the display station.

,/\,

••

,and ~ ) act

as

Dead Keys. Pressing a

to

appear in the position

that

is

to

AAEEEEii6uuuC

(Any accent plus a space

Figure 3-26. Canadian-French Dead Keys (Typewriter Keyboard)

to

form a stand-alone accent character.)

Figure 3-27. Canadian-French Dead Keys (Data Entry Keyboard)

3-44

If

you key an incorrect accent, press the RESET key to cancel the Dead Key
operation and then replace the accent (at the cursor location) with the correct
accent.

If

your

second keystroke

"Accent Plus What"

)(

* J

+?

) message appears in the Operator Information Area, and a stand-

is

alone accent

press the RESET key and then rekey

space).

If

the Do Not Enter-What (
mation Area during a Dead Key operation, either
action or (2) the
key, check the contents

letter again.

By

now

is

any area
section
the result.
Ask

that

the

displayed

host

you

should be quite familiar with

that

you

discusses it. Press

If

you

appropriate person in

is

not

a valid letter or a space, a Do Not

()(

*'

+?,)(

at

the cursor location. To recover from this error,

system has interrupted

of

your screen, and then rekey the accent and the

are still not sure about,

still have questions, now

*'

+?

both

X?+

the

your

) message appears in the Operator Infor-

key or keys in question, and watch

organization for an explanation.

Enter-

,)(

*"'+?,)(

the accent and a valid letter (or

(1)

you

your

operation. Press the RESET

your

display station.

turn

back and reread the

is

the time

*"+?,

have taken an illegal

If

there

to

get them answered.

or

Chapter 3. Keyboards J.45

Attribute

Select Keyboards

Introduction

The Attribute Select keyboards consist

• Attribute Select Typewriter keyboard

• Attribute Select Typewriter/APL keyboard

• Attribute Select Overlay keyboard

of

the following types:

The Attribute
called Highlighting and Programmed
following choices:

• Character Reversal (Reverse Video)

- Allows you to reverse the color
screen background. After the
characters entered will be reversed.

• Character Blinking

- When the
from the keyboard will blink.

• Character Underscoring

- When underscore
keyboard will be underlined.

The Programmed

control, up to six character sets or fonts which are defined by your
organization. These can be selected by program or
allows you to and programmed symbols are installed) with the

Select keyboards will enable you to choose additional functions

Symbols. Highlighting offers

of

a character with the color

Select key

Select Blink key

is

Symbol Set feature permits you

is

depressed, subsequent characters entered

selected, subsequent characters entered from the

is

depressed, subsequent

to

store, under program

by

you

you

of

(if

your program

PF Keys.

the

the

Attribute Select Typewriter Keyboard

All

the keys on the Attribute Select Typewriter keyboard (Figure 3-5), except

PF13

-PF24

the
on the Typewriter keyboard, described earlier in this chapter.
keys are described later in this chapter under "Attribute Selection Keys."

keys, perform the same functions and are located the same

PFI3-PF24

as

Attribute Select Typewriter/APL Keyboard

The Attribute Select Typewriter/APL keyboard (Figure 3-6)
as

the Typewriter/APL keyboard described in Chapter 4 except for the

of

the

assignment
chapter under

PFI-PF12

"Attribute Selection Keys."

keys. These keys are described later in this

Attribute Select Overlay Keyboard

The Attribute Select Overlay keyboard (Figure 3-7)

to

operation
difference
data section only) which allow your organization to use its own specially
marked overlays. These overlays are used to indicate the special font symbols
associated with the keys whenever one
selected. These keys are described next under "Attribute Selection Keys."

3-46

the Typewriter keyboard described earlier in this chapter. One

is

that

this keyboard has special narrow key tops (in the 48-key

of

is

exactly the same

is

similar in layout and

the Programmed Symbol sets

is

Attribute Selection Keys

The Attribute Selection keys are divided into three types:

• Highlighting selection keys

• Programmed Symbol Sct Selection keys

• Field Inherit keys

Note:

Although some

select characters in various colors, there are

Display

X

~

Station.

2%

% will appear

of

the Attribute Selection keys indicate that

If

you

attempt to select colors

in

the Operator Information Area.

110

color choices on the 3278

all

the 3278, the message

you

can

For the following discussion
Figures 3-28 and 3-29.

Highlighting Selection Keys

Reverse Video Key. To select reverse video highlighting, first press the
key (

1)-

) and hold

The character entered will be highlighted by reversing the color

character and its background.

black background will be displayed

The highlighting indicators in the

Blink Key. To select blink highlighting, first press the Shift key ( il' ) and hold
it down while pressing the Blink key. The character entered will be highlighted
by blinking

The highlighting indicators in the

Underscore Key. To select underscore highlighting, first press the Shift

(

1}

) and hold it down while pressing the Underscore key. The character

entered will be highlighted by an underscore

The highlighting indicators in the

on

and

it

off

of

the Attribute Selection keys, refer to

down while pressing the Reverse Video key.

of

For

example, a normal character

as

at the rate

a black character

Operator Information Area will show:

of

approximately three times per second.

Operator Information Area will show:

beneath

Operator Information Area will show:

on

a green background.

the character.

of

the

green

Shift

on

fi1

:~:

key

.a

a

Programmed Symbol
These keys enable
Pressing one

the keyboard

To use the

(

.:Q-.

) and

required. To use the
ALT key and hold it down while pressing the appropriate key for the required
symbol set. The symbol set indicator in the

be one

appearing in
the programmed symbol set.

If

you

displayed in the Operator Information Area:

Press the RESET key

of

PSA, PSB, and

hold

of

the following: PSA, PSB, PSC, PSD, PSE, or PSF.

the

have made an invalid symbol set selection, the following message

Set

Selection Keys

you

to select from one

these selection keys causes any subsequent data entered from

to

select a character from the appropriate symbol set.

PSC

(upper symbol) keys, first press the Shift

it down while pressing the appropriate

PSD, PSE, and PSF (lower symbol) keys, first press

Operator Information Area means

to

restore the keyboard.

of

the programmed symbol sets.

key

for the symbol set

Operator Information Area will

An

SO

indicator

you

did

not

select one

)(

- f

*><

key

the

of

is

Chapter 3. Keyboards 3-47

Field Inherit Keys
The Field Inherit keys permit you

to

return

to

field attributes after having used
character attributes to enter data. With the two Field Inherit keys active on the
3278 you may remove your character attribute selection. See Figures 3-28 and
3-29. To use the Field Inherit keys, the ALT key must be pressed and held
down while pressing the Field Inherit key.

~--Red

i+oi--Pink

Underscore~

Field

Inherit

To

remove

highlighting

To

remove

programmed
symbols

Blink',~

Keys:

-..

------_""

i-fio--Green

I-+i--

~--Blue

!+i--

~--White

Yellow

Turquoise

Figure 3-28. Attribute Select Keys

PFI

- PF12

348

~--Red

Field

Inherit

To

highlighting

Blink~

Underscore--.

Keys:

remove

~

io4-Io--

~--Green

..,.--

..

--

~--

~--

Pink

Yellow

Blue

Turquoise

White

To

remove
programmed
symbols

-----_J

Figure 3-29. Attribute Select Keys PF13 - PF24

Chapter 3. Keyboards 3-49

Chapter 4. Features for the

3278

Contents
Selector Light Pen Feature

How
How It

Magnetic

Reader Lights and Buzzer Alarm 4-7

Magnetic

Security Keylock Feature 4-9

How
Security

Audible Alarm Feature 4-10

Numeric Lock Feature 4-11
3278
3278 APL/Text Feature 4-13

Typewriter/APL Keyboard 4-15
Typewriter/Text Keyboard

4-1

It

Works 4-3
Is

Used 4-4
Making Selections 4-4
Changing Selections 4-5

Slot Reader and Magnetic Hand Scanner Accessories 4-6

Slot Reader or Magnetic Hand Scanner Operation 4-7

It

Is Used 4-9

Key

Removal 4-10

Switch Control Unit Feature 4-12

4-3

4-20

Chapter 4. Features for the

3278

4-1

Selector Light Pen Feature

The selector light pen
use the selector light pen to select one entry
played on the screen. Figure
area in which

Figure 4-1. 3278 Selector Light Pcn

How

The point

you

It

Works

of

the pen contains a device that can detect

is

a feature for a 3278 Display Station. You will usually

of

4-1

shows the selector light pen and the keyboard

can place the light pen when

the screen. This device checks for the presence
switch, also located
loaded and
the barrel

is

activated by placing the point

of

the pen toward the screen (Figure 4-2).

in the point

of

the pen,

is

of

a list

of

options or items dis-

not

using it.

the

light

of

a character on

of

a character only when a

activated. The switch

the pen

on

the screen and pushing

is

spring-

Figure 4-2. When the selector light pen

positioning

of

the tip

of

is

being used, correct

the pen

is

important.

Chapter 4. Features for the 3278 4-3

How

It

Is Used

In

most applications for the selector light pen, a list or a table

it

the operator selects items from

applications are basically similar, a user's specific application could be unique.

Ask the appropriate person in

the

way

applications and

There are two types

you

of

selectable fields

(1) selection fields and (2)

to

(1) select items in selection fields, and (2) notify the program

by

tions

The first character
character. The designator character for a selection field

.mark

field

selecting an attention field.

of

each selectable field on

(?

) or a greater-than sign ( >

is

an

~mpersand

t

&)

with the selector light pen. Although all

your

organization to explain

are

to

use your selector light pen.

that

can be displayed

attention

or a blank position. See Figure 4-3.

fields. You will use the selector light pen

your

screen

);

the designator character for an attention

is

displayed, and

your

organization's

on

your

of

your

is

called a designator

is

either a question

screen:

selec-

Figure 4-3. Designator characters tell you about the data on your screen.

Making Selections
To see more clearly which fields

of

the end

lines

Initially, the designator characters

on

your screen will be question marks. To select an item, place the point
pen directly over any character in
screen
greater-than sign
incorrectly
item) can cause the wrong item, or
always verify
an item from your screen.

4-4

the selector light pen against the palm

to

appear through alilight-pen-detectable fields.

to

detect it. The question mark at the beginning

to

indicate

(not

directly over the intended character or over a character in another

that

the designator character has been changed after you have selected

on

your screen are light-pen-detectable, press

(the

first characters)

that

item and push the pen tip against the

that

the item has been selected. Positioning the pen

no

item, to be selected. Therefore, you should

of

your hand. This will cause

of

most detectable items

of

that

item changes to a

of

the

Changing Selections

If

you

select an incorrect item,

acter from the incorrect item a second time with

changes the greater-than sign back

then

correct item can

you

After

have completed your selections from the screen (more than one

be selected.

selection can be made), locate a selectable field
ampersand character

or

you

can correct

to

a question mark and deselects the item. The

your

mistake

the

selector light pen. This

(Attention

a blank position for a designator character. Selecting

the Attention field (the word EXIT in Figure 4-3) turns

Time (

pleted

)(

):.

) message and indicates

your

selections. The data

to

the program

you

have selected can now be acted upon

the program.

is

Remember, Figure 4-3

only an example. The way
operation depends on the program, and each
refer

to

the user's program guide for !he program with which

job

you

could be different. Always

for specific instructions.

by

selecting a char-

field)

that

has an

on

the Do Not

that

you

Enter-

have com-

end a selector light

you

are working

by

pen

Chapter 4. Features for the 3278 4-5

Magnetic Slot Reader and Magnetic Hand Scanner Accessories

The magnetic slot reader and the magnetic hand scanner accessories are for
3278 Display Stations
The magnetic slot reader (Figure 4-4) or the magnetic hand scanner (Figure

4-5) attaches

station

to

is

equipped with a reader, you can send a coded message
system by passing a special magnetic striped card through the slot in the
reader. With a hand scanner,
scanner over a magnetic stripe.
hand scanner when, for example, you begin operating the display station.

that

are

used

to

send coded messages

to

the host system.

your display station through a cable. When your display

to

the host

you

can send a coded message by passing the

You may be required to use a card reader or a

A specially designed (coded) magnetic stripe card may also be used
an

account, request information about accounts, identify the person using the
reader, or represent an account number. The code
stripe attached

to

the back

of

the card.

is

contained on a magnetic

to

update

Figure 4-4. Magnetic Slot Reader

4-6

Figure 4-5. Magnetic Hand Scanner