02620 90001 HP 2621 Users Manual Prelim

02620-90001_HP_2621_Users_Manual_Prelim 02620-90001_HP_2621_Users_Manual_Prelim

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owner's manual

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CONTENTS
Congratulations ... , ... ; ...... , ... , ............. , .... iii .
A Guide To Using This Manual ....... '.' ........... , .. v
Section I -

Introducing The HP 2621 , ........... ,., 1-1

Features , .... , .. , , ...... , . , . , ... , , . , .... , ., ....... 1-1
Display Screen ...... ' , ........... , . , ... , , , , , .. , , , . 1-2
Display·Memory ............... ,., ....... , ....... , .1-2
Keyboard ... , ...................... , ..... , , .... , .. 1-2
Function Keys .......... , ...... , ............ , .... , , 1-2
Configuration .......... , .. , . , .. , .. , ..... , , , , ....... 1-3
Data Communications .......... , .... ,., ... , ...... ,. 13
Self-Test , , ... , . , ....... , ' .. , , ........ , ...... , . , ... 1-3
Section 11 -'- How To Get Started ., ....... " .. ,,', .. 2-1
Identifying Options and Accessories ... , ... " ... ,., .. 2-1
Preparing Your Terminal For Use ....... ,., ..... ,.,.2-2
Power Switch (On/Off) .... , ............ , ........... 2-3
What To Do In Case Of Difficulty ......... " .... , ... 2-3
Section III -

The Terminal's Display Characteristics, . 3-1

Screen ." ....... , ... " .. ", .. , .. ,., ...... , .. , .... 3-1
Memory ..... , ... ,', .. " .. ,."."., ....... ,""" .,3-2
Display Enhancement . , , , , . , .. , , ..... , , ' ..... , . , . " 3-3
Section IV -

The Terminal's Keyboard. , ........... , 4-1

Character Set Group ............................... 4-1
Numeric Pad Group ............................... 4-3
NUM Key Unshifted Mode .......................... 4-3
NUM Key Shifted Mode ............................ 4-3
, Function Key Group ............. , .. ,", ... , .. , .. ,. 4-4
Function Key Unshifted Mode .......... " ... , ..... , 4-4
Labels Key .. ".,.,., .. , .... , .. , ...... , .... , ..... , 4-7

Screen Labels ........ , .. ".,., .. , ...... , ......... 4- 7
Labels Key. Unshifted ... , .............. ,.....
4-8
Labels Key. Shifted, .. ' . , .... , ...... , , . , . , . , , ...... 4-8
Labels Key. Control Shifted, ......... , .. , , ... , , , ..... 4-8
Function Key Shifted Mode , ................. , .. , .. , 4-9
Config Function Set ... ,., ... ,. , , .. " .... ,",., .. 4-12
..... , . , , . . .
4-12
Printer Control Function Set
TAB and Margin Control Function Set ., ... , ... , .... 4-12
Edit Control Function Set, ... , ... , ..... ". , , .. " ... 4-13
Section V -

Using The Terminal As An Input!
Output Devite ........... ,.... . ...... 5-1

Configuration Function Keys ......... , ... ~ ......... , 5-2
Baud Rate ponfiguration .... , . . . . . . . . . .
. 5-5
Parity Configuration . , . " , , ..... , , ... , . . . . . . . . . .
5-5
Duplex Configuration .... , ... " ...... ,........
. . 5-5
Strap Configuration ... , , ....... , .. , ....... , ........ 5-6
Handshake Configuration ....... " ........... ". . 5-10
Hz Configuration .............. , ... ,............ . 5-11
Start, Column Configuration ......... , .............. 5-11
Return Key Configuration ...... , ..... , .. ' , , . , ' , , ' , , 5-11
Terminating Configuration Mode ' .. ,'".,.,.,.,.,., 5-11
Selecting The Remote Operating Mode,
, 5-12
Modem Considerations .,.,." ....... ,", .. ,".,. 5-12
Sending Data To The Computer , .... ,
5-12
,5·13
Receiving Data From The Computer "
Escape Code Sequences ... , ... ' , , , . ,
, 5·13
Section VI.- The HP 2621P., .. , .......... ,.

... 6-1

Options and Accessories ... , . , ' .. , .. ' . , . , ' , , . , . , . ' , 6-1
Thermal Printer Paper, , , ... , , ' , . , , . , ' . , ,
. , 6·2
Paper Loading .... , ' . , . , .... , . , . , . , . , . ,
, , , 6·2
Printer Control Functions ... ' , , . , , .. , . , , ' ... , .. , , . , . 6-3
Printer Control Escape Sequences ,."".," , , .. , , ... 6-6

•

... Congratulations .....
You have selected Hewlett-Packard's
Model 2621 Interactive Terminal. The HP
2621 is a simple, efficient terminal designed
to serve your requirements for the process·
ing of alphabetic and/or numeric data.
This owner's manual is provided to acquaint
you with the characteristics of this terminal
and to aid you in using them to your .
advantage. Included in the manual are
instructions for installing and using your
terminal. In addition to installation and usage information, reference material is provided for including this terminal as an input / output d~vice within a computer system
environment.
For information regarding repair and functional operation, see the HP 2621 Interactive Terminal Service Manual, HP Part No.
02620-90002.
r

iii

~tion VII -

Preventive Maintenance ........ ~ ...... 7-1

Clearning The Display and Keyboard ................ 7-1
Battery Maintenance ............................... 7-1
Section VIIl '-:- Diagnosing Problems ........ : ....... 8·1
Sell· Tesl Error Messages ......... , ................. 8-1
Resetting th~ Therminal ............................ 8-3'

Tables
Table
Table
Table
Table
Table
Table

Appendix A -

HP ASCII-coded Character Set ....... A-l

Appendix B -

Cable Connector Pin Assignments .... B-1

Terms Used in This Manual .................. Glossary·l

Table
Table
Table
Table
Table

. Figures'
Table
Figure 2-1. Identification Label, Rear Panel .......... 2-1
Figure 2-2 Power Switch and Connector Positions,
Rear Panel ............................. 2-2
Figure 2-3. Initial Screen Display ................... 2-3
Figure 4-1. Keyboard Character Set Group .......... 4-1
. Figure 4-2. Keyboard Numeric Pad Group ........... 4-3
Figllre 4·3. Keyboard Function Key Group ........... 4-4
- Figure 4-4. Screen Labels Structure ................. 4-7
Figure 5·1. DC1/DC2 Handshake Protocol ........... 5-7
Figure 6-1. Printer Mechanism ....................... 6-2
: Figure 7·1. Battery Location, Rear Panel ............ 7·1
Figure 7-2. Battery Support, ....................... 7-3
• Figure 8-1. Self-Test Screen Display .............. ,. 8-1

Table
Table
Table
Table
Table
Table
Table

2-1.
2-2.
5-1.
5-2:

HP 2621A Options... . . .. .. .. .... .. . . . 2:1
HP 2621A Accessories. .. .... .. .. . . .. .2-1
Strapping Configuration .................. 5-6
DC1/DC2 Handshake Protocol
Strapp'ing Effects ........................ 5-9
5·3. Data Communications Handshake
Configuration ., ........................ 5-10
5·4. Escape Sequences, Cursor and
Screen Control ......................... 5-14
5-5. Escape Sequences, Terminal Control .... 5-14
5·6. Escape Sequences, TAB and
. 5-15
Margin Control. . . . . . . . . . . . . . . . . . . .
5-7. Escape Sequences, Edit Control ...
. 5-15
5·8. Escape Sequences, Miscellaneous
Control ................................ 5-16
5-9 .. Escape Sequences, Cursor Address
Control . . . . . . . . . . . . . . . . . . . . . . . . .
. 5-1 7
5·10. Escape Sequences, Display
Enhsincement Control .............
. 5-18
5-11. Escape Sequences, Screen
Labels Control. . . . . . . . . . . . . . . . . . . .
. 5-18
5-12. Escape Sequences Transmitted by
the 'HP 2621 . . . . . . . . . . . . . . . . .
. .. 5-19
5-13. ASCII-coded Control Codes. .. . .
5-20
6-1. HP 2621P Options.........
.6-1
6-2. HP 2621 P Accessories ...•.........
6-1
6-3. HP 2621P Escape Sequences,
Printer Control ...............
. .. 6-6
8-1. Diagnostic Error Messages. . . . . . . . . .
. . 8-2

A Guide to Using This Manual
ThiS owner's manual is written to introduce
you to the HP 2621A and 2621P Interactive
Terminals. The HP 2621A is the basic
terminal while the HP 2621P provides a
self-contained thermal printer together with
the basic terminal.
Wlthlll this manual, the term HP 2621 is used
to reference features and capabilities applicable to either version. The term HP 2621A
or HP 2621P is used to reference features
and capabilihes unique to either the A
version or the P version, respectively.
Detailed inf9rmation about specific feaiures
is include.d so that you may use this manual
as a reference guide to operating the.
terminal An index of terms and phrases is
Included at the back of the manual to assist
you in quickly locating reference material.
This owner's manual includes the following
sections:
Section I - Introducing the HP 2621 This
seelion is p general description of the
terminal and briefly lists its features and
capabilities.
Section II - How to Get Started. Information
is given in this section about how you can
idenlify the options and accessories delivered with your terminal. In addition to thIS
information, you art) instructed about how to
prepare your terminal for use.

Section III - The Terminal's Display Characteristics. This section contains a complete·
description of the display screen and display memory. Included is information about
the initial state of the display after the main
power switch is turned on, screen and
memory 6rganization, and cursor positioning
Section IV - The Terminal's Keyboard. A
description of the keyboard is provided in
this section. Examples of keyboard interaction with the terminal's display are included.
Section V - USing the Terminal as an
Input/Output Device. This section describes
the data communi calion capabilities of the
HP 2621. Included is information about the
terminal's configuration, operating modes,
and transmission of data between the HP
2621 and an external data processing
device.

Section VIII - Diagnosing Problems. Problem conditions and the messages associated with these conditions are discussed In
this section. In addition to this information,
. this section includes a description of the
self-test feature, recovery (resetting the
terminal) in case of an error, and Information about where to get help it you have
difficulty solving a problem
Appendix Section - This section contains a
reference table in AppendiX A that Includes
the ASCII-coded character set, and control ..
codes and escape sequence codes Appendix B contains tables that list cabling
aSSignments.

Section VI - The HP 2621 P. This section
describes the HP 2621P Interactive Terminal with self-contained thermal printer. A
complete description of operating procedures together with reference material is
included.
Section VII - Preventive Maintenance. This
section contains information about the care
and cleaning of your terminal to keep it In
the best operating condition.

Section

Introducing. the HP 2621
The HP 2621 Interactive Terminal is designed to provide you with a simple, efficient
character-mode terminal device. This terminal offers many powerful features that are
easy to use.
Among the features offered by the HP 2621
are:
Display Memory and Screen
• Bright, Clear Screen Display
• 24 Lir.e by 80 Character Display Area
• Uppercase and Lowercase Character Set
• Displayable Control Code Characters
•
Character-by-Character
Underlining
• Cursor Position Relocation
• 48 Line by 80 Character Display
Memory (Two Pages)
• Roll, Home-up, and Home-down
Display Control
Keyboard
• 68 Key Typewriter-style Keyboard
Layout
• Embedded Calculator-style Numeric
Key Pad
• Eight Variable Function Keys
• Labels Key

Funct.ion Keys
• Displayable Labels
• Redefinable Con~guration
• Self-test
• Clear Line
• Clear Display
• Printer Ol,ltput Control (HP 2621P
Only)
•
Display
Function
Code
Enable / Disable
• Tabulation and Margin Control
• Text Editing Control
• Transmit Pre-defined Escape Sequences

Data
•
•
•

Communications
Data Transfer Rate up to 9600 Baud
Character or Une Mode Transfer:;
Support of EIA RS232G or CCITT
V.24 Interface

Configuration
• Screen Displayable Configuration
Data
• Redefinable Configuration vi~ Function Keys
• Data Transmission Baud Rate
Control
• Data Parity Control
• Duplex Control
• Strapping Control
• Communciations Handshake Control
• User-definable RETURN Key,
• User-definable Transmission Start
Column
• Configuration Memory Protecllon

,.,

Introducing the HP 2621

Keyboard
The HP 2621 keyboard is a separate unit
that is linked to the display portion of the
terminal via a flexible cable. The keyboard
layout is similar to that used for standard
office typewriters. It has 68 keys that include
eight Function keys, and a Labels key The
remaining keys support the ASCII-coded
character set. A numeric key pad similar to
that used for calculators is embedded within
the alphanumeric keys. Included within the
keyboard unit is a speaker used to sound
the terminal's bell tone.
r

Refer to Section IV for a detailed deSCription
of the keyboard

Function Keys
Display Screen
The HP 2621 Interactive Terminal has a
screen with a 6 X 8 Inch viewing area
capable 01 displaYing up to 1,920 charac_ters In 24 lines of 80 character positions
Each character is formed by a 7 x 9 dot
matrtx within a 9 x 15 dot cell. This permits
~ the precise formation of complex character
symbols with ample separation between
adjacent characters, both vertically and
- hOrizontally The combination of these features gives you a bright, easy-to-read
display
ReIer to Section III for a detall(~c1 (jnscrlptlon
01 the display screen

1-2

Display Memory
Your terminal's display memory can store
up to 3,840 characters (48 lines 01 80
character positions) A "page" 01 data is
the maximum number of lines that can be
displayed on the screen at one time (24
hnes). Thus, you can store up to two pages
01 data In display memory You can examine
any portion of text within display memory by
using the roll Function keys on your keyboard
A detailed description of display memory is
contained In Section III

• The Function keys are the eight light-colored keys located across the top of the
keyboard and the Labels key (an unmarked
light-colored key located to the right of the
keyboard) These keys provide you with
access to several sets 01 functions Similar
to the other keys on the keyboard, the
Function keys are used either unShifted or
shifted

Introducing the HP 2621
Unshifted, the keys perform cursor and
screen control functions that are labeled
direclly on the key caps.

•

Shifted, these keys perform the functions
indicated by a screen label associated with
each key. The screen labels are displayed
in inverse video across the bottom of the
screen (row 25). The labels are selected by
using the Labels key. Some of the screen
labeled Function keys trigger the display of
a sublevel set of function labels. For example, the [conf1g) and [edU) Function
keys.
See Section IV for a detailed description of
the FunctiQn keys.

Configuration
The HP 2621 provides you with the ability to
change the terminal's configuration directly
from the keyboard using a set of Function
keys. You can cause the terminal's current
configuration to be displayed on the screen
in a coded format and then make changes
to the configuration simply by pressing the
appropriate Function key. The portion of
memory used' to store this configuration
data is nonvolatile. A battery is used to
protect this portion of memory whenever the
main power source should be intentionally
or accidentally shut off.

Data Communications

Self-Test

You can transfer data to and from a host
computer in Character mode (character-by-character) using the terminal as a
completely interactive device. In addition to
Character mode, you may select Line mode
operation (transmit data to the computer a
line at a time). In Line mode, you can
compose a line of data. then verify and
correct the data before you transmit it to the
computer.

This terminal is engineered for high reliability, ease of testing. and. if reqUired. rapid
repair.-By using the Test function. you get a
GO/NO GO indication of the terminal's
operating condilion. See Section VIII for
information about the terminal's Self-test
function.

The terminal operates at a data transfer
rate of up to 9600 baud and offers asynchronous pOint-to-point data communications using the EIA RS232C and CCITT V .•24
communications interface specifications.
)

Connection to the computer is direct or
through a modem. In addition to these
features, the HP 2621P provides an integral
thermal line printer which can b~ used to
produce a permanent copy of your data
communications transactions.
Section V contains detailed information
about data communications.

Section V contains detailed information
about the configuration of your terminal.

1·3 .

How To Get Started

Section II

Identifying Options and
Accessories

When communicating Wlttl Hewlett-Packard regarding your terminal, speCify the
model, serial, and option numbers 10 ensure
accurate Idenhflcation hy Hfwlf:It-Par.kard. A list of Hewlett-Packard Sales and
Service Offices is included at the back 01
this manual.

Any options you request when you order
your terminal are delivered installed within
the terminal. Accessories, such as data
communication cables, are delivered with
the terminal, usually in the same carton but
packaged separately. Upon delivery of your
terminal, verify that the options and/or
accessories. you ordered are included in the
shipment received.
An identification label is located on the rear
panel of your terminal (see Figure 2-1).
The first section of this label states the
power requirements of the terminal. The
next section states the model number and
the serial number. The third section lists any
options included with. the terminal.
Table 2-1 is a list of options available for
the HP 2621A Interactive Terminal (see
Section VI for HP 2621P options).
Table 2-2 is a list of accessories available
for the HP 2621A Interactive Terminal (see
Section VI for HP2621P accessories).

NOTE
" your terminal is already insfalled, you can
ignore the following malenal and proce(;d 10
"Power SWitch (ON/OFF)"
Figure 2-1. HP 2621 Identification Label,
Rear Panel
Table 2-1. HP 2621 A OPti0PS
Option No.

Description

50Hz,
60Hz,
50Hz,
50Hz,

013
014
015
016

240V
100V
220V
100V

Power
Power
Power
Power

Table 2-2. HP 2621A Accessories
Accessory No.
13222N
13222M
13222C

Descnption
U.S.A. Modem Cable (Male Connector)
European Modem Cable (Male Connector)
RS232C Cable (Female Connector)

2-1

Preparing Your Terminal for
Use
This terminal is designed to operate in a
wide range of environments. It is self-con• tamed and provides easy access to the
opera lor controls so that normal installation
does nol require that you open the unit
CAUTION
The terminal should be opened only by a

Connect the other end of this cable to the
appropriate external device.

Step 1. Place the terminal on any sturdy,
convenient surface such as a desk, table, or
stand designed for such a purpose. Avoid
plush or spongy surfaces that mighl restrict
the flow of air through the vents in the base
of the terminal. For example, do not use a
typewriter pad beneath the terminal.

Step 4. Set the main power switch on the
terminal's rear panel (see Figure 2-2) to
the OFF posibon.
Connect the power cord to the connector
located just below the main power sWitch

Step 2. Connect and secure the keyboard
cable hood connector to the socket connecter labeled KYBD on the terminal's rear
panel (see Figure 2-2).

Step 5. ENSURE THAT THE VOL rAGE TO
BE SUPPLIED MATCHES YOUR TERMINAL'S POWER REOUIREMENTS (see the
power requirements label on the rear panel
01 the terminal)

QlJ311hed service person Please refer to the

HP 2621 Service Manual, HP ParI No.

02620-90002
T() Install your terminal, complete the follow- •
ing stups

Step 3. This step is required to connect the
terminal to an external dala processing
device such as a computer, Connecl and
secure the data communications cable
hood connector ·to the socket connector
labeled OAT A COM on the terminal's rear
panel. The cable hood connector must be.
securely held in place by the wire clamps
provided with the socket connector.

'''''',',.:';.

Plug the 3-prong power connector Into the
outlet lor your main power source
'
CAUTION
For your safety, a 3-prong grounded pow.er outlet always must be used

~~.

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Figure 4-4. HP 2621 Screen Labels Structure

4-7 .

The Terminal's Keyboard
The Labels key is used by itself (unshifted),
In comblnalion with the [SH I F"T] key (shifted), or In combination with the [CTRL] and
[SH I F"T 1 keys (control shifted) to obtain
vanous results, as explained in the following
paragraphs.

When the primary set 01 screen labels, Of
any subset 01 screen labels (except the
config subset) IS displayed, press and hold .
down the (SH I H J key and then press the
labels key to cause the display of the 11-18
screen labels subset.

labels Key, Unshlfted

To terminate the 11-f8 function. subset,
simply press the Labels key by itself, Control returns to the set of screen labels (either
primary or a subset) from which you requested the fl-18 screen labels.

Usually, you use the Labels key to return to
·the primary set 01 screen labels Irom one 01
the subsets. You also can turn on the
display 01 screen labels when it has been
shut 011
When either of these conditions exists (the'
:screen labels, display IS a subset such as
conng, tab I mrgn', or edit, or the screen
lal)t~ls display has been shut oil), press the
Labels key by itself to cause the primary set
01 labels to return to·the screen. For results
when the 11-f8 subset IS displayed, see fhe
following section.

For example, il you were uSing the TAB and
margin control functions and had the
tab/mrgn screen labels displayed when you
pressed the [SH I n J and Labels keys, the'
tab/mrgn screen labels are replaced by Ihe
f1~18 screen labels. Now, when you press
the Labels key by itself, the screen labels
display returns to the tab/mrgn screen
labels. You must press the Labels key once
more (un shifted) to get to thepnmary set of
screen labelS.

labels Key, Shifted
You lJSI~ the Labels key In comblnahon with
the [SH I n I key to cause the display of the
11-18 screen labels

4-8

If 2)

( f 31

(f1 )

(fSI

( f61

( 171

( f8)

Labels Key, Control Shifted
To shut off the display 01 the screen labels,
press and hold down the (CTRL I and
[SH I H ) keys and then press the Labels
key. The display 01 the screen labels is shut
off until you press the Labels key (or Shifted
labels key) once again
The screen labels display line includes an
"aclive modem" indicator asterisk and a
cursor position column indicator These
indicators are shut oil whenever the screen
labels are shut off. See "Function Labels,
Shifted Mode" for a description of the
indicators, If you are using the terminal to
communicate with a computer via a modem
and the "active modem" indicator IS required by your facility, do not shut off the
screen labels.

The Terminal's Keyboard

Function Key Shifted Mode
When the function keys are used in combination with the [SH 1ft] key (shifted mode),
they cause execution of the functions
named by the function labels that are
displayed at the bottom of your screen.
The primary Function labels appear as
follows:
[ conflg ]

TEST

[CLR LINE]

[CLR DSPY]

a nn

!prlnt~r]

!DSPY fN]

!tab/mrgn]

~dlt

An asterisk is displayed in this position if the Data Set Ready control line (RS232C CC line or CCITT V.24 107 line) IS hlgtl (true) ThiS
indicator disappears from the display if the Data Set Ready control line goes low (false), or if the screen labels display IS shut off (control
shifted Labels key)
,
Normally, this indicator is used when your terminal IS connected to a computer via a modem The indicator signals that ttle modem
active. Do not shut off the screen labels display if your facility requires the use of the active modem indicator

lif\t.~ IS

A number appears in this position that identifies the current column position of the cursor (in the range 1-80) ThiS column number
incremented or decremented each time the cursor is moved to a new pOSition on the screen.

The shifted mode functions are

4·9

III~

Clllllildl ~

r...,vuoilru

Function Label

Key Stroke

Function

(conflgl

Shifted ["I

Set the terminal into Configuration mode: The current configuration is displayed
on the screen together with a set of configuration function key labels thaI you
may use to manipulate the terminal's configuration. The configuration dala
requires three lines of display memory. When memory IS full (48 lines of data),
you will lose data from memory upon rElquesting Configuration mode. Section V
contains details about the configuration of the terminal.

nEST]

Shifted

Perform a diagnostic test of the terminal: check ROM, Video RAM, Program
RAM, Keyboard Chip, then display the full character set and the stalus bytes If
an error condition is encountered, an appropriate message is displayed
Section VIII contains a description of the Test function.

[CUI lIHE]

Shifted [ROLLA]

[J..]

(CLR DSPY]

Shifted [ROLL V]

[printer)

Shifted

4·10

[A]

Clear Line- this function clears (erases) the content of the current line from
the character marked by the cursor through the last character in the line. Move
the cursor to the character position where you want the line deletion to begin
and press the shifted Function key associated with this label.
Clear Display - this function clears (erases) the content of display memory
from the character marked by the cursor through the last character In memory
Move the cursor to the character position where you want the memory deletion
to begin and press the shifted Function key associated with thiS label
Applicable only to theHP 2621P Interactive Terminal. See Section VI. This label
is blank in an HP 2621 A

The Terminal's Keyboard

Function Key Shifted Mode
When the function keys are used in combi·
nation with the [SH 1FT) key (shifted mode).
they cause execution of the functions
named by the function labels that are
displayed at the bottom of your screen.
The primary Function labels appear as
follows:
J

[ conflg )

TEST

)

[CLR LINE)

ICLR DSPV)

a nn

Ip,.lnte,.)

IDSPV FH)

Ihb/m"gn)

edlt

An asterisk is displayed in this position if the Data Set Ready control line (RS232C CC line or CCITT V.24 107 line) is high (true) This
indicator disappears from the display if the Data Set Ready control line goes low (false); or if the screen labels display is shut off (control
shifted Labels key).
Normally. this indicator is used when your terminal IS connected to a computer via a modem The indicator signals thnt the modem hnt~
active. Do not shut off the screen labels display if your facility requires the use of the aclive modem indicator

A number appears in this position that identifies the current column position of the cursor (m the range 1-80) This column number
incremented or decremented each time the cursor is moved to a new position on the screen

, I'

The shifted mode functions are:

4·9

The Terminal's Keyboard

Function Label

Key Stroke

Function

(conflgl

Shifted ["I

Set the terminal into Configuration mode The current configuration is displayed
on the screen together with a set of configuration function key labels that you
may use to manipulate the terminal's configuration The configuration data
requires three lines of display memory. When memory is full (48 lines of data),
you will lose data from memory upon r~questing Configuration mode. Sechon V
contains details about the configuration of the terminal.

nEST)

Shifted [J..I

Perform a diagnostic test of the terminal: check ROM, Video RAM, Program
RAM, Keyboard Chip, then display the full character set and the status bytes If
an error condition is encountered, an appropriate message is displayed
Section VIII contains a description of the Test function.

[CLR LIME I

Shifted [ROLLAI

Clear Line - this function clears (erases) the content of the current line from
the character marked by the cursor through the last character in the line. Move,
the cursor to the character position where you want the line deletion to begin
and press the shifted Function key associated with this label.

[CLR DSPYI

Shifted [ROLL VI

Clear Display - this function clears (erases) the content of display memory
from the character marked by the cursor through the last character III memory
Move the cursor to the chaructt~r position where you want the memory deletion
to begin and press the shifted Function key associated with this label

[prlnterl

Shifted

L....

4·10

[A I
-----

Applicable only to the HP 2621P Interactive TerminaL See Section VI. This label
is blank in an HP 2621A.

The Terminal's Keyboard

Function Label
[DSPY' FH J

Key Stroke
Shifted

Function
Cause terminal control function codes, such as escape sequences, to be
display/,'d symbolically on the screen rather than being executed by Ihe
terminal An asterisk appears on the screen, immediately to the fight 01 this
label when this function is enabled (for example, rosPY FHO))

[<:)

When Display Functions is enabled in Local operating mode, all characters me
displayed, The Return character (CB) is displayed and a f~eturn/Llnelf~ed
(CR/LF) is executed,

In Remote 'operating mode, the Null and Delete characters are used lor
padding, They are not displayed, If the ENOl ACK handshake IS enabled (See
Configuraiton, Section V), the ENO character is executed but not displayed, If
the ENOl ACK handshake is disabled, ENO is not executed but, IS displayed
To terminate the display of function codes, press this key again The asteflsk
disappears from the label and function codes are no longer displayed on the
screen,

[tllb/m~9nJ

Shifted

[7]

Display a set of function key labels that you may use to set TAB stop positions
clear any single TAB slop position, or clear all TAB stop pOSitions You may
also define Ihe Dositiohc r Ih~ left and right margins of the display screen, and
clear these Illargins,

[edit]

Shifted

[V]

Display a set of function key labels that you may use to perfor,m editing
operations upon text in display memory Editing operalions prOVided Include
Modify, underline, clear line or display, insert or delete line, and Insert or delete
character.

4-11

The Terminal's Keyboard

•

Configuration Function Set

Printer Control Function Set

TAB and Margin Control Function Set

When you request Configuration mode
(press [sH 1FT I together with the Function
key labeled [conflgll. you are able to
examine and change the internal configuration 01 your terminal The process of reconfigUutlOll 15 described in Section V.

The printer functions apply only to the HP
2621P. These functions are descnbed in
Section VI.

When you request TAB and Margin Control
(press [SH I FT I together with the Fun.clion
key labeled [tab/mrgnl), a new set of
Function labels appears on your screen, as
follows

I [SET TAB]

ICLR TAB] [CLR TABS]

Function Label

IL MARGIN] tR MARGIN] [CLR MRGN] I

Key Stroke

]

Function

I S[ 1 TAB]

Shifted

ICLR TAB]

Shifted I Rod. A]

[CLR TABsI

Shifted [ROLL\h

Clear All TAB Stops - this function clears (erases) all existing tabulation stops
Simply press the shifted Funclion key associated with this label. Following
execulion of this function, a default TAB stop is set at the left margin

IL MARGINI

Shifted Itt I

Set Left Margin - this function sets the left text margin at the current position of
the cursor. Move the cursor to the column where you want the left margin and
press the shifted Function key associated with this label A default TAB stop 15
set at the left margin whenever this function is executed

IR MARGIN]

Shifted 1-<1

Set Right Margin - this funclion sets the righllexl margin at the current posilion
of the cursor. Move the cursor to Ihe column where you want the fight margin
and press the shifted Function key associated wilh Ihls label. IllS Illegal to set
the right margin to the lell 01 Ihe left margin. If you attempl to do thiS, Ihe
tenTunal I~lnores your requesl and sounds a bell tone

[CLR MRGH]

Shlflt'd [;:::>'1

Clear

Set TAB Stop - this function sets a tabulation stop at the current posilion of the
cursor. Move the cursor to the column where you want a, TAB stop and press
the shifted Function key associated with this label
Clear TAB Stop - this function clears (erases) any tabulation stop at the
current position of the cursor. Position the cursor to the column where you want
to remove a TAB stop and press the shifted Function key associated with this
label. Note that the default TAB stop at the left margin can be cleared uSing this
function. The TAB key is ignored when no TAB stops are defined

Mar~llns

- thiS funclion clears (erases) any lell and right margm set
column 2 and 79 InclUSive. The left margin IS reset at column 1 and the
fight margin IS reset at column 80. A delault TAB stop IS set at the left margin (In
itllS case, column 1)
IJl~twee[l

"---'-'
4·12

1hft

'I"

"tillllt'~ KnylHlnrd

Edit Control Function Sot
The

('(lit

control fllflclirlfls allow you to

pprforl11 vaflous editing opernlions upon

text in display memory. When you request
Edit Control (press [SH 1FT] together with
the Function key labeled [ed t t ] ), a new set
of Function labels appear on the screen, as
follows

[ MODIFY] [UNDRLINE] [CLR LINE] (CLR DSPY]
Function Label

(MODIFY)

Key Stroke
Shifted

I~l

(INS LINE] [DEL LINE) [INS CHR] [DEL CHAR)
Function
Modify Text - this function enables Modify mode while you are Interacting with
a host computer. For example, if you are in Character modE: ar,ld transmit an
erroneous command string to.the host computer and receive an error message
in response, you can enable MOdify mode, correct the error In the command
string on the screen, and retransmit the command without hawlQ 10 retype thE:
entire string To enable Modify mode, press the shifted Funct,on key
associated With this label. An asterisk is displayed Within the label to IndicatE:
that the Modify mode is in the enabled state. Move the cursor to the line you
want to change and use the Edit Functions to make the deSired changes When
the line is changed to what you want, press [ENTER) Or [RETURN) to transmit
the changed line to the host computer The use of the [ENTER) or (RETURt-I)
key executes Modify mode. The current line (marked by the cursor) IS
transmitted to the computer and the asterisk is removed for the [MOD I rv )
screen label
To disable modify mode (before you press either (ENTER) or (RETURN)),
press 'the shifted funclion key assOCiated with the [MOD I F Y' ) scrF!en l:ltJpl
The asterisk IS removed from the label and .Modlfy mode IS disabled
The amount of data retransmitted is a functton of the line mode transmission
rules. That is, if you never typed anything into H18 \tne to be retransmitted
transmission is from the column po sitton defined by the value set Into the Start
Column field dunng Configuration mode. If you have typed new data Into the
line, then transmission begins at the point where you typed in the new data

4·13·

The Terminal's Keyboard

Function Label

Key Stroke

Function

(UHDRLIH[!

SHIFTED

[CLR L1HE!

Shifted [ROLL fl.)

Clear Line - this function clears (erases) the content of the current line from
the character marked by the cursor through the last character In the line Move
the cursor to the character posilton where you want the line deletion to begin
and press the shifted Function key associated wilt1 this label

(CLR DSPY!

Shifted (ROLL.V]

Clear Display - this funclton clears (erases) the content of display memory
from the character marked by the cursor through the last character in memory
Move the cursor to the character position where you want the memory deletion
to begin and press the shifted Function key associated with this label

( I HS L (HE I

Shifted

Insert Line - this function inserts a blank line into display memory Immediately
preceding the line marked by the cutsor. Move the cursor to the line before
which you want to insert a line and press the shifted Function key associated
With thislabel A new blank line ISlnserted into memory and the cursor position
remains unchanged (it remains in the same row and column)

(J-)

[A]

Di$play Underline - this function adds an underline character at the current
cursor position Each lime the [UHDRL I HE) Function key is pressed an
underline character is added to the current character. If you hold this key down
the underline repeats along the line until you release the Function key. Note that
this underline function differs from the ASCII-coded underltne character

When memory IS full (48 lines of data) and the cursor is at row 1. an Insert
request deletes a line from the bottom of memory to make room for the line to
be inserted. When memory is full and the cursor is at any row other than 1, an
insert request deletes a line from the top of memory
(DEL L1HE)

Shifted (/'-J

Delete Line - thiS function deletes an entire line at the current cursor position
Move the cursor to any character position Within the line you want deleted and
press the shifted Function key associated With this label The entire line IS
deleted from display memory The cursor posllton IS unchanged (It remains In
the same row and column)

----_._-----------'--------------'-----------------------------------'

The Terminal's Keyboard
r---~------------'------------------T---------------------~--------------------------------~

Function Label

[IHS CHRl

Key Stroke

Shifted

t>]

Function

Insert Character - this function enables the Insert Character mode When
enabled, any character that you enter is inserted into display memory in th"
position immediately preceding the cursor, Move the cursor to thE: character
position at which you want to insert one or more characters and pr~ss thE:
shifted Function key associated with this label. An asterisk is displayed within
the label to indicate that the Insert Character mode is enabled Then, insert
new characters, While inserting characters, any eXisting characters are shlftE:d
to the right one character position within the same line for each new character
entered,
Any characters shifted beyond the right margin seltlng are lost No wraparound
occurs,
To disable Insert Character mode, Simply press the shifted ~uncllon kE:Y
associated with this label Th~ asterisk IS removed from the label and you
cannot insert new characters, Any ch,H3cters enterec1 whnn Irls('rt Charnel!'r
mode is disabled overwrite existing characters in the line

[DEL CHAR]

Shifted

[Y]

Delete Character - this function deletes one character marked by the cursor
Move the cursor to the character you want deleted and press the shifted
Function key associated with this label The character IS erased from memory
Remaining characters Within the same line are shifted to the left one charac1E:r
position for each character deleted,

4· 15 .

Using the Terminal as an Input/Output Device
The HP 2621 Interactive Terminal can be
connected, either directly or through a
modem, to an external data processing
device such as a computer.
You may be required to select specific
characteristics that define the terminal operation before you can use it as a data
communications device. This set up procedure is called "configuring" the terminal.
For the HP 2621, configuration parameters
are maintained within programmable fields
that are displayable on the screen. Included
among these fields are.
• Values that define the terminal's data
transfer baud rate.
• Keywords that define the type of parity
generated by the terminal and the duplex
setting of the terminal.
• Single-character mnemonics that define
the data handling straps and the type of
data communications handshake.

Section V
i

You use the cursor left or right [...:) , or [>]
keys to position the cursor for modification
of the desired parameter
You may use the TAB right or left [TAB) I.
or [TAB< 1 key to position the cursor to the
beginning of any displayed field in the
configuration data.
The configuration function descriptions follow:
You use the [canf 191 function key to enter
configuration mode and display the conhguration parameters on the screen. When
requested. these parameters are displayed
together with a set of function key labels
with which you may change the parametric
values. USing the keys associated With
these labels, you configure the terminal to
match your Local mode requirements or the
Remote mode requirements of an external
computer system

• Values that define the frequency rate for
your local A.C. electric power and the
starting column position for the transmission of data across the data communications line.
• A two-character redefinable string associated with the [RETURN] and [ENTER]
keys.

5-' .

USII)9

th~

ierrnillal as an I/O Oevice

The initial HP 2621 configuration data is
displayed on the screen in the following
format
------------------------------------------------------~------------------------------~

Saud Rate

Partty

2400

HOHE(O) fULL

.....

•

ttl (

HE Xl

Duplex

Straps

Ha~d5hak.

bcgHu

Etx

[PREV tOUS 1 (MODM Off I

Return
[~

[REMOTE. 1 (CAPS LK I (LH MODE I (AUTO Lf 1

_-----

Note that the configuration data uses three
hnes of display memory Thus: if memory is
full and you request the conhgurahondata,
you may lose up to three hnes from display
niemory
W~t::n you are 111 Configura lion mode and
nldk cflanges to the (ilsplayed conflgurahan !leld~;. tf1t1SE::: changes do Ilot become
P.Ht~ihv,·· until YOI) ternllfli\t,~ tile ConfiouratlOl1 n loch ~

5·2

Start Col

Configuration Function Keys
The configuration function "exit" terminates
Configuration mode You may also press
the Labels key to terminate Configura lion
mode. In either case, the configuration data
and screen tabels disappear from the
screen and are replaced by the content of
display fil'"lllory and the primary set 0.1
screen It.buls

The NEXT and PREVIOUS functions are
used to manipulate the displayed conhguration data
The remaining functions define conditIOns
such as Modem Disconnect, REMOTE
mode enable/disable, uppercase character
(GAPS) lock/unlock (teletypewriter slmula·
tion), Line mode enable/disable, and automatic linefeed enable / disable

Using the Terminal

as an I/O Device

r-----------r-----------r-----.--.--.....:.------,-------------~----,

Funcllon Label

Key Stroke

Function

[exlt)

Shifted

This fUrli :Iion terminatHs Configurallon mo(ie The scrE,Hn rf)lurn!; 10 Ihe scrc,(,n
condilions Ihat exisled before you requested conhguralion mode. You al50
may terminate Configuration morle by pressing Ihc! Lnbol!; key

[NEXT)

Shifted [1/1

The NEXT fU!1ction sets the currenl configuration parameter (the cursor marks
the current parameter) to the next avmlable \lalu(l For the str ans and lor
handshake, NEXT simply changes the stale 01 the paranwtc)r from lowl:rc:asu
to uppercase, or vice versa. For Baud Rate, Parity, Duplex, Hz, and Start Col.
the next available value replaces the current value each time you execute
NEXT. The RETURN field is not affected by the NEXT functloA

(PREVIOUS)

Shifted (ROLLA)

The PREVIOUS function sets the current configuration parameter (the cursor
marks the current parameter) to the previous available.value. For the straps
and for handshake, PREVIOUS changes the state of the parameter from
lowercase to uppercase, and vice versa. For Baud Rate, Pant;' Duplex Hz,
and Start Col, the previous avanable value replaces the current value each time
you execute Ihe PREVIOUS funcllon The RETURN field IS nol aftl!cted by the
PREVIOUS function.

[MODM OFr)

Shifted (ROLLVI

Modem- Disconnect - This function directs the terminal to "hang-up" the
modem. The action resulting from pressing the function key associated wllh
this label occurs immediately The cursor disappears from the screen tor
approximately three seconds.

(REMOTE)

Shifted [/\ I

This function enables the connection to a remote computer via the data
communication interface. An asterisk appears in the label when thiS function IS
enabled (for example, (REMOTE-]). To disable this mode (thai IS, to allow
Local mode) press the function key associated with thiS label once again

•

5-3 .

Using the Terminal as an I/O Device
Function Lable
ICAPS lK)

Key Stroke
Shifted

[..:J

Function
This function causes the terminal's alphabelic keys to be locked Into
uppercase characters. Specifically, the terminal generates only the ASCII
characters a through I (the characters' and - are Ignored) when Caps Lock IS
enabled. An asterisk appears in the label when this funclton IS enabled (for
example, [CAPS LICO)).
When Caps Lock is disabled, the complete ASCII Character Set (128
characters) is generated by the terminal. For remote operation, the HP 2621
always accepts the complete 128 characters whether Caps Lock IS enabled or
disabled

lUi MODE)

Shifted

[7]

This function enables Line Mode When Line Mode IS enabled, data entered
into display memory appears on the screen but is not transmitted across the ,
data communications link until after the lOnER) or [RETURN] key IS pressed
and the host computer has responded. An asterisk appears in the label when
thiS function is enabled (for example, [IN MODE oJ)
In Line mode, the amount of data transmitted is determined as follows If you
have created the line to be transmitted uSing the keyboard, data IS transmitted
from the point where you started typing data If the remote computer created
the line to be transmitted (and you have not typed anything into the line) data IS
transmitted from the POint defined by the Start Col field In Configuration mode
Trailing blanks are suppressed. If you have typed data Into a computer-generated line of data, transmission begins at the pOint where you started tYPing
When this function is disabled, the terminal operates in Character Mode Each
character entered is transmitted immediately across the data communications
link when the character's key IS pressed

[AUTOLF]

Shifted

[V]

This function enables Automatic Linefeed. When enabled, a Linefeed IS
generatt!d automalically each time ttle [RETURN] or [ENTER] key IS prf;ssed
This funelton should be enabled when you operate the terminal in local mode
and should be disabled when you operate ttle terminal in remote mode.
depending On the requirements of the host computer An asterisk appears In
the label when Automatic Linefeed is enabled (for example, [AUTO LF' J )

_ _ . _ _ _ _ _ _ _ _ _ _ _ _ .J-_ _ _ _ _ _ _ _ _ _ _.J...__ .. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

___'

Using the Terminal' as an I/O Device

Baud Rate Configuration
The speed at which dati;l transfers occur
between the terminal and the host computer
is determined by the value set into the Baud
Rate parameter field. The available Baud
Rate values are EXT., 110, 150, 200, 300,
600, 1200, 1800, ?400, 3600, 4800, and
9600. The value you select must match the
cabability of the host computer or that of the
modem link between the terminal and computer. The defaulted baud rate value is
2400.
To change the Baud Rate value, use the
cursor left (""-) or cursor right (;,..-) key to
position the cursor beneath the first character of the current Baud Rate value on the
semen You also may use ITAlh) or
[TAB<) to move the cursor to this field.
Then execute the NEXT or PREVIOUS function (( SH 1FT) and ()-] or [SH I F"Tl and
(ROLL A)) until the appropriate value is
displayed.

Parity Configuration
The type of parity generated for each data
byte is determined by the value set into the
Parity parameter field. The available parity
types are NONE(O), NONE(1), EVEN, and
ODD The type selected mus't match the
requirements of the ho~t computer. The
defaulted parity is NONE(O)

1 he available parity types are:

NONE(O).
NONE(1)
EVEN
ODD

No parity is generated; eighth bit is always 0
No parity is generated, eighth bit is always 1
Even parity is generated; eighth bit IS panly resul1
Odd parity is generated; eighth bit is panty resul1

To change the Parity value, use the cursor
left (-] to
pOSition the cursor at the first character of
this field. You also may use [TAB)] or
[TAB<] to move the cursor to this field.
Press [SHIH] and [J.], or [SHIHI and
[ROLL"] to change the state within the Hz
field Either the NEXT or PREVIOUS function
may be used to change the frequency value
from 60 to 50, and vice versa.

WtWIl this strallIS enablpd. the input buller
fills to Wlltlln approximately 16 bytes 01 its
capacity At this point, the terminal. sends a
. Transmit Off (XOFF) signal to cause the
computer to stop sending data. When the
buffer has emptied below half of its capacity, the terminal sends a Transmit On (XON)
signal which causes the computer 10 resume sending data This process is repe.ated until the current data transfer operation is
completed.

...

When this handshake type is disable~ (the
defaulted state), no XONI XOFF handshake
occurs between the terminal and the computer.
Note that the XON signal is represented by
a DC 1 (CTF1L 0) chara9ter transmission
The XOFF signal is represented by a DC3
(CTRLS) character transmission.

Hz Configuration
The value set for this strap must match the
frequency of your local A C power (that is,
the frequency on your power hne). For an
area with a 60-cycle power frequency
(such as the U SA or Canada), set this
value to 60 (the defaulted state). For Europe and elsewhere with 50-cycle power
frequency. set this value to 50.

Start Column Configuration

y
~

You may specify a column number from
which data transmission is to begin on the
screen. Any characters to the left of the
starting column are ignored when tre
[ENTER] or IRETURN) key is rrp~~p.c1 Thl~
allows you to retransmit a hne Without having
to physically remove the computer's prompt
character. For example, if the computer
issues a I-character prompt in response
to your entries, you can specify. a starting
column of 2. Subsequent entry lines are'
transmitted from column 2 to the end of the
line.
The defaulted starting column is 1. To
change this value, use the cursor left K.I or
cursor right I>] key to position the cursor to
the first pOSition within the Start Col field
You also may use [TAB») or [TAB<] to
move the cursor to this field. Then, use the
NEXT or PREVIOUS Function key to increment or decrement the startmg column,
value (press [SH I FT.] and lvI, or [SH I.FT I
and [ROLLAI ).

as an I/O Device

ThiS pmamliler I~ oV'!lIldduri hy ttll, !I,qlf,;ll
start-ol-text pointer malntalnf:rl by tt1("
terminal See "Sending Data to the CorllPui
er" for lor a descnptlorl of the 10'11c.al
start-ol-text pOintf:r.

Return Key Configuration
You can specily one or two characters thilt
will be transmitted each time the [RETURH J
or [ENTER] key is pressed Any flSCI!
character is legal, however. ~hese ar,; U~;IJ
sally control codes that you Wish to pa';:; to
the host computer. See AppendiX A lor a
table of legal ASCII characters
To specily RETURN key ch~rar.lers. u", 11"
cursor Iplt 1...._1 or (~lIrsor noht 1-".1 \1' \ I,l
move the cursor to t"~: hl~,1 t;i1.1!;1·1.:r
position In the RETURN parameter held You
may use ITAB)] or [TAB<) to mIJVf., ttle
cursor to this field Enter the deslrecl char
acter or charaders from the keyboard Th(;.
default value IS [~ ]

Terminating the Configuration
Mode
When you are satisfied with the COnn(jlJra- •
hon data on the screen .. you termtnalf Ih"
C;onngLJrtlon Mode by ("xpcul'flq II), ..,d
funclion ([SHIFT] and IN ) or by l'lt .. ,~.
ing the Labels Key The conhqurallor data
is stored In nonvolaltle m(,nlOly. prOl><:lhj
from destruction by a battery :shoul r ] th,c
main power source be interrupted fe,r W'I
reason
5, 11 .

Using the Terminal asan I/O Device

Selecting The Remote Operating Mode
Before the terminal can send and receive
data via the data communications interface,
you must enable remote operation.' You
accomplish this by enabling the REMOTE
function. Press [SHIFT) and [conflg)
keys to obtain the Configuration screen
labels. The labels appear in the following
format
exit

)

HEXT

)

[PREVIOUS)

[1'1001'1 OfF)

To execute the REMOTE function, press
and hold down lSH I FT J while you press
(f\l

An asterisk appears in the REMOTE function label to Indicate that the function is
enabled For example. [REMOTE') .
To disable Remote mode, press Shifted [A. )
once more The asterisk disappears from
the label and Local mode is in effect.

REMOTE)

[CAPS LK

)

[LH MODE)

Modem Considerations
If you are communicating with the host
computer through a modem, it may be
necessary for you to turn on a modem
power switch or make modem parity setting
changes. The modem's baud rate and
parity settings should be the same as those
configured In the terminal
The HP 2621 supports the Bell 103A or
equivalent type of modem.
Whenever the modem line is active. an
asterisk appears between the fourth and
fifth screen label at the bottom of the
screen If your facility requires the display of
this" active modem" Indicator, do not shut
off the screen labels display.

5-12

IAUTo Lr

)

Sending Data To The
Computer
You enter the data to be sent to the host
computer Into display memory from the
• terminal's keyboard. If your terminal IS configured for Character mode, the data IS
transmitted character-by-character as
you type it

If your terminal IS configured for line mode.
you type a Single line and use the (EHTER)
or [RETURH I key to transmit the data a line
at a time.
line mode allows you to enter Into memory
an entire line of up to 80 characters The
data that you type Into the line IS not
transmitted to the computer until you press
either (EHTER) or [RETURH) The lineappears on the screen and you can make
changes to the displayed data at any lime
before you press .( EHTER) or [RETURH I

Using the Terminal'as an I/O Device

The amount 01 data translerred to the
computer IS dependent on the logical start-aI-text pOinter or the value set into the
Conflgurahon mode start Column field

A logical start-aI-text pointer is maintained by the terminal lor each line in
memory The pointer is zero until a character is typed into the line. Then, the pointer is
set to the column number where the first
character was entered. Note that the selling
01 the logical start-aI-text pointer occurs
only at the bollom (last) line 01 memory
Examples:

1. Assume that the computer sends a
Single-character colon prompt (:) to the
terminal and that you enter a system command In response to this prompt:
:RUH PROGRAM1

T-----

Re~pon~e

Your

L-computer Prompt

The logical start-ol-text pointer for this
line (at the bottom 01 memory) is iero until
you enter the RUN command, at which time
the pointer is set to column 2.

2 Assume that the computer sends a query
message that, In turn, you respond to With
"YES"
ABORT?YES

-rT .
L-

Your

Receiving Data From The
Computer

The lot]ical start-'ol-te)(j DOinter is meaningful only lor Line mode operatIOns Either
this pOinter or the Confi~uration Start Column value aHect tile amount 01 data transmitted to the computer.

No special action IS reqlJlred to reu"vI diltn
from the host (.omputt!r oth"r !tliHI hiWlflfj
the REMOTE luncl10n enabled Data IS
displayed on the screen as It IS received
from the computer

When the value 01 the logical start-aI-text
pointer is zero, the Configuration Start Column value is used to determine the starting
point 01 the data transmission

It may be ner:essmy to confH)\Jrf' fnr a
specific type 01 handshake wtHm you trans
mit control codes, escape' sequences, or
are uSing the HP 2621 P prtnter

When the value of the logical start-aI-text
pointer is any value greater than zero, the
pOinter itself is used to determine the starting point 01 the data ttansmission.

Escape Code Sequences
Modify mode (a screen labeled Edit function) places your terminal In temporary Line
mode. When you want to change the content 01 a line in memory, enter Modlly mode
and position the cursor to the appropnate
line on the screen. Type in the changes you
want to make within the line and then press
[EtHER] or [RETURN]. The line marked by
the cursor is transmitted to the computer
and Modily mode is disabled autOn1AItr:Ally

The HP 2621 recognizes a set of escap',
code sequences that can be transmitted
Irom a host computer These sequences
are used to control cursor and screen
display, the terminal, margin and tabulation
stop settings, edlltng. cursor addreSSing,
display enhancement, and so forth
In addition to the escape code sequenc8S
recogntzed upon receipt from a host computer, you can transmit some escape code
sequences from the terminal to a host
computer via the Funclion keys To Clccess
these c:orips, prf".s anI! hold dc'wl1
[SH I FT], ancj then press the Lat,'ds kf;Y
The follOWing Function labels are displayed
across the bottom of the screen

The amount 01 data translerred is governed
by the logical start-aI-text pointer or the
Configuration mode Start Column value
described for Line moeje, ahove

Re~pon5e

Compu ter Query

In this case, the logical start-ol-text pointer is set in column 7.

[ f 1]

[f2]

[ f3]

[ f

]

[ f5]

[ f6]

[ f 7l

[fSl

See Table 5-12 for escape sequense
function definitions

5,13.

USlIlg the Terminal as an I/U Uellice
The term,inal also recognizes and acts upon
a set of ASCII-coded control codes transmitted from a host computer, The escape
code sequences and control codes recognizt'd tJ~, Ihe terminal are listed and dehned
in Tables 5-4 through 5-13,

Table 5-4. Escape Sequences, Cursor and Screen Control

Function

Code

Description

A
B
C
D
F
H
h
S
T

Move cursor up by one row
Move cursor down by one row
Move cursor right by one column
Move cursor left by one column
Cursor Home Down,

esc
esc
esc
esc
esc
esc
esc
esc
esc

Cursor Up
Cursor Down
Cursor Right
Cursor Left
Home Down
Home Up
Roll Up
Roll Down

Cursor Home Up,
Scroll display up by one line
Scroll display down by, one line

Table 5-5, Escape Sequences, Terminal Control

Function

Code

Reset Terminal

esc E

Test Terminal

esc

Display Functions On

esc Y

Description
Set terminal to power ON state

Self-test, terminal

Disable execution of any control
functions, but display their code,
display asterisk In screen label
([OSPV FHO]),

Display Funchons Off

esc Z

, " " - - - - , ,. . . . _. _ _ _ ., _ _ _ _~L__ _ _ _

5·14

Enable execution of arty control
functions, do not display thelf
code; remove asterisk from
screen label ([OSPV FH J)

__:_-L_;__----------------...J

Tablr' 5-6 Escapn SeQUf~nces, TAB anri Marqln Control

---.----.------.--.------- - --.. --... _-- - ,_ ..•.
rlinctlClIl

Codn

Set TAB Stop

esc

Clear TAB Stop

esc 2

Clear All TAB Stops
Set Left Margin

esc 3
esc 4

Set Right Margin

esc 5

()n!;r

_--

rrpttnn

Set a tal1ulntlorl slop al Cllrn~nl
ClIr SOl po !>r II Clrl
Delnle a labLJlnllorr stop al CIHrf,nl
cursor position
Delete all tabula lion stops
Set left margin al current cursor
position
Set riqtll margin CIt currenl cur~;()r
posilion

Table 5-7. Escape Sequences, Edit Control

r---------.--------- --------...---- ---------.---.--.- . -...-------...------Fundan
Code
Df'scr IJltlf~11
~-----------~-----,r-------------------

Clear Line

esc f<

Clear Display

esc J

Insert Line

esc L

Delete Line

esc M

Insert Character On

esc 0

Insert Character Off

esc R

Delete Character

esc P

Delete current line from current
cursor position to end-of-Ilne
Clear display memory from current
cursor position to end-of-me·
mory
Insert blank line at currenl cursor
position
Delete entire Irne at current cursor
position
Enable Insert Character Funcllon
display asterrsk In screen lahel
subsequpnt chnr

The control code lor a Form Feed produces
vanous results depending on the conditions
eXisting when'f! Form Feed is encountmed.
If REPOm mode is disabled, Form Feed is
ignored.
If REPORT mode is enabled, and LOG TOP
and LOG 8TM are disabled, Form Feed
results in a top-ol-page operation on the
printer (skip to new page and print tic mark).

•

If REPORT mode is enabled, and LOG TOP
is enabled, Form Feed results in completion
of logging from the screen to the printer, a
top-ol-page operaiion on the printer (skip
to new page and print tic mark), and a
top-of-'page operation on the screen
(home up, clear display).
If REPORT mode is enabled, and LOG 8TM
is enabled, Form Feed results in a top-of-page operation on the printer (skip to new
page and print tic mark), and a top-of-page operation on the screen (horne up,
clear display).

The cursor does not leave its current position when either LOG TOP or LOG 8TM are
enabled ane;! a COpy ALL, COpy PAGE, or
COpy LINE operation is requested. The
copy operation is performed and the cursor
remains stationary .

Contrn; Lodes lor operahons such AS Form
Feed and Escape that are displayed on the
screen are transft~lf{!d to the printm dunng
logging or copy operations However,displayed control codes for Carflag(~ Return
and Linefeed are not transferred from the
screen to the printer. Instead, a period
character is substituted for the Carriage
Return and Linefeed during the print operation.

~6211'

The HP 2621P

Printer Control Escape
Sequences
Note that for each printer control sequence
(esc & p .... ) received from a host
computer, the terminal generales a device
completion status response character to
inform the computer of the final disposition
of the requested print opera lion. An S is
returned to Indicate successful completion,
F to indicate a failed completion, or U to
indicate that the user tnterfered with the
completion of the requested operation (for
example, the RETURN key was held down·
which prevented the operation from being
completed).

Table 6-3. HP 2621P Escape Sequences, Printer Control

Funclion
Copy All Memory
Log
ory'
Log
ory

Code

Data From MemBottom
Data From MemTop

Description
Position the cursor to the left margin of first hne of memory data and copy all of
memory to printer.

esc 0

esc

11 C

Enable data logging from the bottom of memory (print the current entry hne)

esc

12 C

Enable data logging from the top of memory (print hne as it rolls off top of
memory.

esc & p
esc & p
esc & p
esc & p

13 C
M
B
F

Disable data logging (top or bottom, whichever IS enabled)
Print all data in memory from current line (marked by cursor) to end of memory
Print all data on screen from current line (marked by cursor) to end of screen
Print current line (marked by cursor)

Log Data Funchon OH
Copy All Memory
Copy One Page
Copy One Line

_--0_0
6-6

.---

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