IBM 3274 Technical manual

GA27 · 2827-8
File ~ S380lS31f1S3143001810CUJ8
Syatams
Validation Number 06

Systems
GA27-2827-6
File No. 8360/8370/83/4300/8100·09
IBM 3270
Information Display System
3274 Control Unit
Planning, Setup, and
Customizing Guide
Validation Number 06
--..- ~
----
-- ---
- ~--
- -. ---
------
--_ .. -
----_.-

Warning: This equipment generates and uses radio freq-
uency energy; if not installed and used properly, i.e., in strict
accordance with the instructions manual, it may cause harm-
ful interference to radio communications. It has been tested
and found to comply with the limits for a
Class A computing
device persuant to Subpart J
of Part 15 of FCC Rules, which
are designed to provide reasonable protection against such
interference when operated in a commercial environment.
Operation of this equipment in a residential area is likely to
cause interference,
in which case the user, at his own ex-
pense, will be required to take whatever measures may be
required to correct the interference.
Seventh Edition (March 1980)
This is a major revision of, and obsoletes, GA27-2827-5. It adds planning, setup, and
customizing information for the 3274 Model 51C.
This publication is for planning only. Changes are periodically made to the information
herein. Before using this publication in connection with the operation
of IBM systems or
equipment, consult your
IBM sales representative or the latest IBM System/360
Bibliography, GC20-0360, or the IBM System/370 Bibliography, GC20-0001, for the
editions that are applicable and current.
It
is possible that this material may contain reference to, or information about, IBM
products (machines and programs), programming, or services that are not announced in
your country. Such references or information must
not be construed to mean that IBM
intends to announce such IBM products, programming, or services in your country.
Publications are not stocked at the address given below; requests for
IBM publications
should be made to your
IBM representative or to the IBM Branch Office serving your
locality.
A form for readers' comments
is provided at the back of this publication. Address
additional comments to
IBM Corporation, Department 52Q, Neighborhood Road,
Kingston,
N. Y. 12401. IBM may use or distribute any of the information you supply in
any way it believes appropriate without incurring any obligations whatever. You may,
of
course, continue to use the information you supply.
©Copyright International Business Machines Corporation 1977, 1978,
1979,1980

Preface
This guide is written for customers, planners, and IBM
representatives who may be responsible for:
• Planning the installation and customizing of the IBM
3274 Control Unit Models lA, lB, and lD
• Planning the installation, setup, and customizing of the
IBM 3274 Control Unit ModellC and Model5lC
• Planning the installation and setup of the IBM 3278
Display Station, 3279 Color Display Station, 3287
Printer, and 3289 Line Printer
This guide is organized as follows:
Chapter 1, "Planning and Setup," provides planning and
setup information for:
IBM 3274 Control Unit
IBM 3278 Display Station
IBM 3279 Color Display Station
IBM 3287 Printer
IBM 3289 Line Printer
Chapter 2, "Introduction to Customizing," describes how
and by whom the 3274 customizing procedure
is per-
formed.
Chapter 3, "Preparing
to Customize," describes the
sequence numbers used in the 3274 customizing procedure.
The sequence numbers are grouped by 3274 model number.
Chapter 4, "Initial Customizing Procedure," describes how
to perform the initial customizing
of the 3274.
Chapter 5, "Modification Procedure," describes how a 3274
configuration can be modified without performing the
entire customizing procedure.
Chapter 6, "Backup :System Diskette Generation Pro-
cedure," describes how
to generate a backup (duplicate)
system diskette.
Chapter 7, "Update-Diskette Installation Procedure,"
describes how to install an update-diskette in your 3274.
Appendix
A, "Planning Checklist," provides a suggested
checklist to help you plan your installation.
Appendix
B, "3274 Device Cables," provides cable attach-
ment information, and also channel attachment informa-
tion for the 3274 Models lA, lB, and ID.
Appendix C describes the use of the Printer Authorization
Matrix.
Appendix D
is a procedure for verifying the 3274 sub-
system after IML is performed.
Appendix E provides a procedure for converging the color
patterns on the 3279 Color Display Station during custom-
izing.
For detailed information about the functions and features
of the above 3270 Information Display System units, see
the latest editions of:
An Introduction to the IBM 3270 Information Display
System, GA27-2739
IBM 3270 Information Display System: Component
Description, GA27-2749
IBM 3270 Information Display System: Installation
Manual- PhYSical Planning, GA27-2787
IBM 3270 Information Display System: Configurator,
GA27-2849
IBM 3270 Information Display Station: Character Set
Reference, GA27-2837
IBM 3274 Control Unit Operator's Guide, GA23-0023
IBM 3278 Display Station Operator's Guide, GA27-2890
IBM Cryptographic Subsystem Concepts and Facilities,
GC22-9063
See Figures P~l through p-s for other manuals that may
help you plan your installation.
Preface iii

An Introduction to the
IBM 3270 Information
IBM 3270 Information Display SYstem
Display System
Color and Programmed
-Symbols
GA27-2739 GA33-3056
IBM 3270 Information
IBM 3270 Information
Display System Display System
Configura tor
Character Set
-Reference
GA27-2849 GA27-2837
IBM 3270 Information
IBM 3287 Printer
Display System Planning
and Site
Installation Manual-
Preparation Guide
-
Physical Planning
GA27-2787 GA18-2018
-
I I
IBM 3270 Information
IBM 3270 Information
Installation and
Display System Display System Assembly of Coaxial
Template (English Units)
Template (Metric Units)
Cable and Accessories
for Attachment to
IBM Products
GX27-2990 GX27-2999 GA27-2805
Figure pol. General Information and Installation Manuals
iv

IBM 3270 Information
IBM 3274 Control Unit
Display System Model 1C Setup
IBM 3274 Control Unit
Instructions2
Planning, Setup, and
GA27-2855
Customizing Guide 1---------_
(includes 3278, 3279,
IBM 3274 Control Unit
Model 51C Setup
3287, and 3289)
Instructions2
GA27-2827 GA23-0047
I .J
--
r T T I
IBM 3278 Display Station
IBM 3278 Display Station
IBM 3278 Display Station
IBM 3278 Display Station
Switch Control Unir Setup
with Katakana Feature Japanese English Setup
Setup Instructions2
Instructions Setup Instructions I InstructionsI
GA27-2838
GA27-2872 GA18-1031
GA 18-1037
I 1 1 J
T T -
IBM 3279 Color Display
IBM 3279 Color Display
Station Switch Control
Station Setup Instructions
2
Unit Setup Instructions2
GA33-3050 GA33-3066
1 1
T 1 I
IBM 3270 Information
IBM 3276/3278 Display
IBM 3279 Color Display
Display System
Station Keyboard
Station Keyboard
Magnetic Accessory Replacement Instructions Replacement Instructions
Setup
Instructions
GA27-2873 GA27-2895 GA33-3067
I
I BM Magnetic Hand
IBM 3287 Printer Setup
IBM 3289 Line Printer
Scanner -Magnetic Instructions2 (Models 1 Models 1
and 2 Setup
Slot Reader Replacement
and 2)
Instructions2
Procedures GA27-3140
G
A27-3171
GA24-3663
I Available from I BM Japan only.
2Will be delivered with the indicated machine.
Figure P·2. Customer Setup Manuals
Preface v

Introduction to
Programming the
IBM 3270 Information
Display System
GC27-6999
IBM 3270 Information
Display System
Component Description
GA27·2749
IBM 3270 Information
Display System
Reference Summary
GX20-1878
Figure P-3. Programming Information Manuals
vi
IBM 3270 Information
Display System
Display Layout Sheet
GX27-2951
IBM 3287Printer
Models 1and2
Component Description
GA27·3153
""""'"----------
IBM 3287 Printer
Models 1Cand2C
Component Description
GA27·3229
IBM 3270 Information
Display System
Character Set
Reference
GA27-2837
IBM 3270 Information
Display System
3278 Model 5
Layout Sheet
GX27·0014
IBM 3289 Line Printer
Component Description
GA27·3176
Forms Design
Reference Guide
for Printers
GA24-3488

IBM 3270 Information
Display System
Operator's Guide
3275,3277,3284,3286,
3288
GA27-2742
IBM Information
Display System
Operator's Guide with
Katakana Keyboard
3275, 3277, 3284,
3286,3288
GA18-1016
1
IBM 3270 Information
Display System
IBM 3274 Control Unit
Operator's Guide
GA23-0023
IBM 3270 Information
Display System
IBM 3276 Control Unit
Display Station
Operator's Guide
GA18-2040
IBM 3270 Information
Display System
IBM 3278 Display Station
Operator's Guide
GA27-2890
IBM 3270 Information
Display System
IBM 3279 Color Display
Station Operator's Guide
GA33-3057
1 Available from IBM Japan only,
Figure P-4 (part 1 of 2). Operations Manuals
IBM 3275/3277
Trouble Report Form
GX23-0202
IBM 3284/3286/3288
Trouble Report Form
GX23-0204
IBM 3274 Problem Report
Form
GX23-0203
IBM 3276/3278/3279
Problem Report Form
GX23-0201
1
IBM 3270 Information
Display System
IBM 3276 Control Unit
Display Station with
Japanese (English) or
Katakana Keyboard
Operator's Guide
l
GA18-2043
A Guide to Using the
Test Request Feature
on IBM 3270 Information
Display System
3271,3272,3275,3277,
3284,3286,3288
GA27-2774
IBM 3276/3278/3279
Problem Report Form
Japanese English/Japanese
Katakana1
GX18-1033
I
IBM 3270 Information
Display Station
IBM 3278 Display Station
with Japanese (English) or
Katakana Keyboard
Operator's Guide
l
GA18-1030
Preface vii

ISM 3287 Printer
IBM 3287 Printer
Models 1
and 2 Models 1
and 2
Operator's Guide Operator's Trouble
Report Form
GA27-3150 GX27-2923
IBM 3289 L.ine Printer
IBM 3289 Line Printer
IBM 3289 Line Printer
Models 1
and 2 Operator's Models 1
and 2 Operator Models 1
and 2
Guide Reference Summary Operator's Trouble
GA27-3147 GA27-3148 Report Form
GX27-2922
Figure P-4 (Part 2 of 2). Operations Manuals
viii

IBM 3270 Information
Display System
Problem Determination
Guide:
3271,3272,3275,
327~3284,328~3288
GA27-2750
IBM 3270 Information
Display System
3278 Display Station
Problem Determination
Guide2
GA27·2839
IBM 3287 Printer
Problem Determination
Guide2
GA27·3151
1Available from IBM Japan only.
IBM 3270 Information
Display System
System Problem
Determination
for the
3274 Control
Unit
GA27-2871
IBM 3270 Information
Display System
3279 Display Station
Problem Determination
Guide2
GA33·3051
2WiII be delivered with indicated machine.
Figure P-S. Problem O~termination Manu
IBM 3270 Information
Display System
IBM 3274 Problem
Determination Guide2
GA27-2850
IBM 3270 Information
Display System
3278 Display Station
with Katakana Feature
Problem Determination
GuIde 1,
2
GA18·1032
IBM 3270 Information
Display System
3278 Display Station
Japanese Engl ish
Problem Determination
Guide
1,
2
GA18·1036
IBM 3289 Line Printer
Models 1
and 2
Error Recovery and
Problem Determination
Guide2
GA27·3141
Preface ix

Contents
Chapter 1. Planning and Setup 1-1
Introduction 1-1
3274 Cluster Unit Descriptions 1-1
Configuration Planning 1-2
System Planning 1-2
Site Preparation 1-2
Communication Services (3274 Models 1C, 5 Ie) 1-2
Local Channel Attachment (3274 Models lA, IB, and ID) 1-3
Programming Support 1-4
Response Time 1-4
Configuration Support 1-4
Configuration Support A 1-5
Configuration Support B (#9111) 1-5
Configuration Support C (#9112) 1-5
Encrypt/Decrypt Feature (3274 Models lC and SIC) 1-5
Pre-Delivery Planning 1-6
3274 Model lA, 1B, or ID to Local Channel Cables 1-6
3274 Models 1C and SIC Communication Cable 1-6
3274 Models 1C and SIC System Grounding 1-6
3274 Device Cables 1-6
3274 Cluster Network Address Labels 1-7
3274 Customizing 1-7
Subsystem Verification 1-8
Installing Your 3274 Subsystem 1-9
Replacing a 3271 or a 3272 with a 3274 1-9
Problem Determination Procedures 1-10
Relocation/Removal 1-10
Progress Review 1-10
Before Equipment Arrives 1-11
After Equipment Arrives 1-12
IBM Americas/Far East and IBM Europe/Middle
East/Africa
1-17
Supplemental Information 1-17
Safety 1-17
Security 1-17
Personnel Training 1-17
Supplies 1-18
Voice Communication Between 3274 Cluster Operators and
Host System Operators 1-18
Reference Manuals
1-18
Chapt~r 2. Introduction to Customizing 2-1
Chapter 3. Preparing to Customize 3-1
3274 ModellA Customizing 3-3
001 Keyboard Validation 3-3
011 Patch Request 3-3
021 Printer Authorization Matrix 3-3
022 Printer Authorization Matrix Specification 3-3
031 RPQ Diskettes Required 3-4
111 Number of Category B Terminals 3-4
112 Number of Category A Terminals 3-5
113 Extended Function Store 3-6
121 Keyboard/Character Set Language 3-6
131 Typewriter Keyboard 3-6
132 Data Entry Keyboard 3-6
133 Data Entry Keypunch Layout Keyboard 3-6
134 APL Keyboard 3-6
135 Text Keyboard 3-6
141 Magnetic Character Set 3-7
143 Host-Loadable Printer Authorization Matrix 3-7
145 3289 Text Print Control 3-8
147 3-8
151 3274 Model Designation 3-8
161 Color 3-8
162 Structured Field and Attribute Processing (SFAP)
(Configuration Support COnly)
3-8
163 Extended Character Set Adapter (Configuration
Support COnly)
3-8
164 Programmed Symbols (PS) (Configuration
Support COnly)
3-8
165 Decompression (Configuration Support COnly) 3-8
166 Advanced Function Keyboard (Configuration
Support COnly) 3-8
201 Control Unit Address 3-8
211 SCS Support 3-8
213 Between Bracket Printer Sharing (SDLC Only) 3-9
215 3-9
301 3-9
302 3-9
305 through 352 Communications Options 3-9
900 Entry Acceptance 3-9
901 Printer Authorization Matrix Acceptance 3-9
999 Modify Procedure 3-9
3274 Models 1B and 1D 3-10
001 Keyboard Validation 3-10
011 Patch Request 3-10
021 Printer Authorization Matrix 3-10
022 Printer Authorization Matrix Specification 3-10
031
RPQ Diskettes Required 3-11
111 Number of Category BTerminals 3-11
112 Number of Category A Terminals 3-12
113 Extended Function Store
3-13
121 Keyboard/Character Set Language 3-13
131 Typewriter Keyboard 3-13
132 Data Entry Keyboard 3-13
133 Data Entry Keypunch Layout Keyboard 3-13
134
APL Keyboard (ModellD Only) 3-13
135 Text Keyboard
(ModellD Only) 3-13
141 Magnetic Character Set 3-14
143 Host-Loadable Printer Authorization
-Matrix 3-14
145 3289 Text Print Control
3-15
147 Local Copy Function 3-15
151 3274 Model Designation 3-15
161 Color 3-15
162 Structured Field and Attribute Processing (SFAP)
(Configuration Support COnly) 3-15
163 Extended Character Set Adapter (Configuration
Support COnly) 3-15
164 Programmed Symbols (PS) (Configuration
Support COnly) 3-15
165 Decompression (Configuration Support COnly) 3-15
166 Advanced Function Keyboard (Configuration
Support COnly)
3-15
201 through 352 3-16
900 Entry Acceptance 3-16
901 Printer Authorization Matrix Acceptance 3-16'
999 Modify Procedure 3-16
3274 Models 1C, SIC 3-17
001 Keyboard Validation 3-17
011 Patch Request 3-17
021 Printer Authorization Matrix 3-17
022 Printer Authorization Matrix Specification 3-17
031 RPQ Diskettes Required 3-18
111 Number
of Category BTerminals 3-18
112 Number
of Category A Terminals (does not
apply to SIC) 3-19
113 Extended Function Store 3-20
121 Keyboard/Character Set Language 3-20
Contents xi

xii
131 Typewriter Keyboard 3-20
132 Data Entry Keyboard 3-20
133 Data Entry Keypunch Layout Keyboard 3-20
134 APL Keyboard 3-21
135 Text Keyboard 3-21
141 Magnetic Character Set 3-22
143 Host-Loadable Printer Authorization Matrix 3-22
145 3289 Text Print Control 3-22
147 Local Copy Function 3-22
151 3274 Model Designation 3-22
161 Color 3-22
162 Structured Field and Attribute Processing (SFAP)
(Configuration Support COnly) 3-22
163 Extended Character Set Adapter (Configuration
Support
COnly) 3-22
164 Programmed Symbols (PS) (Configuration
Support
COnly) 3-22
165 Decompression (Configuration Support
COnly) 3-23
166 Advanced Function Keyboard (Configuration
Support
COnly) 3-23
201 3-23
211
SCS Support (SDLC Only) 3-23
213 Between Bracket Printer Sharing (SDLC Only) 3-23
215 Physical Unit Identification (PUID) (SDLC Only) 3-23
301 Control Unit Number (BSC Only) 3-23
302 SDLC Control Unit Address 3-23
305 BSC Printer Polling (BSC Only) 3-23
310 Modem Connection 3-24
311 Modem
Wrap 3-24
313 NRZI (SDLC Only) or NRZ Encoding 3-25
313 (BSC Only) Internal or External Clocking 3-25
314 Multipoint or Point-to-Point Network 3-25
317 Nonswitched- or Switched-Network Backup 3-25
318 Normal or Half-Speed Transmission 3-25
321 EBCDIC or ASCII Character Set 3-26
331
BSC or SDLC Protocol 3-26
342 Request to Send (RTS) Control (2-Wire or
4-Wire) 3-26
343 Communications Interface Options 3-26
351
HPCA (SDLC Only) or CCA Adapter 3-26
352 Encrypt/Decrypt (SDLC Only) 3-26
900 Entry Acceptance 3-26
901 Printer Authorization Matrix Acceptance 3-27
999 Modify Procedure 3-27
Chapter 4. Initial Customizing Procedure
4-1
Initial Customizing Procedure Form 4-3
3274 Diskette Insertion Procedures 4-10
Printer Authorization Matrix Form 4-17
Chapter 5. Modification Procedure
5-1
Modification Procedure Form 5-3
3274 Diskette Insertion Procedures 5-9
Printer Authorization Matrix Form 5-15
Chapter 6. Backup System Diskette Generation Procedure
6-1
Backup System Diskette Form 6-3
3274 Diskette Insertion Procedures
6-8
Chapter 7. Update-Diskette Installation Procedure 7-1
Update-Diskette Installation Procedure for IBM 3274
Control Unit 7-3
Appendix A. Planning Checklist A-I
Appendix B. 3274 Device Cables B-1
Instructions for Completing the 3274 Device Cable
Attachment Form
B-2
3274 Device Cable Attachment Procedure B-3
3274 Device Cable Attachment Form (Models lA, 1B, lC,
and 1D) B-5
3274 Device Cable Attachment Form (Model SIC) B-7
Channel Attachment Information Form (3274 Models lA
and 1D) B-9
Appendix C. Printer Authorization Matrix C-l
Description C-l
Defining
the Printer Authorization Matrix During
Customizing
C-4
Printer Authorization Matrix Form C-5
Appendix D. Subsystem Verification Procedure D-l
Appendix E. Color Convergence Procedure E-l
Abbreviations AB-l

Figures
Figure P-l.
Figure P-2.
Figure P-3.
Figure P-4.
Figure P-5.
Figure 2-1.
Figure
3-1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 3-7.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 4-7.
Figure 5-1.
Figure 5-2.
General Information and Installation Manuals
iv
Customer Setup Manuals v
Programming Information Manuals vi
Operations Manuals vii
Problem Determination Manuals ix
Configuration Information Needed 2-3
3274 Model1A Category A and B Terminal
Quantity Relationships
3-5
3274 Model1A Keyboard/Character
Set Languages 3-7
3274 Models 1B and 10 Category A and B
Terminal Quantity Relationships 3-12
3274 Models
1B and 10 Keyboard/Character
Set Languages 3-14
3274 Models
1C and 51C Category A and B
Terminal Quantity Relationships 3-19
3274 Models
1C and 51C Keyboard/Character
Set Languages 3-21
BSC Polling Address/Control Unit Number
Conversion Chart 3-24
Valid Key Positions during Customizing 4-8
Valid Key Positions during Customizing When
Using Japanese Katakana and Japanese
English Keyboards 4-9
Inserting a Diskette into the 3274 Control
Unit 4-10
Operator Codes during Customizing Only 4-12
Steady 8421 Indicator Codes during Customizing
Only 4-13
Flashing 8421 Indicator Codes during Customizing
Only 4-14
8421 Indicator Codes during
IML That Result from
an Incorrect Customizing Procedure 4-15
Valid Key Positions during the Modification
Procedure 5-7
Valid Key Positions during the Modification Procedure
When Using Japanese Katakana and Japanese English
Keyboards 5-8
Figure 5-3.
Figure 5-4.
Figure 5-5.
Figure 5-6.
Figure 5-7.
Figure 6-1.
Figure 6-2.
Figure 6-3.
Figure 6-4.
Figure 6-5.
Figure 6-6.
Figure 6-7.
Figure C-1.
Figure C-2.
Figure
C-3.
Figure C-4.
Figure
C-5.
Inserting a Diskette into the 3274 Control
Unit 5-9
Operator Codes during the Modification Procedure
Only 5-11
Steady 8421 Indicator Codes during
the Modification
Procedure Only 5-12
Flashing 8421 Indicator Codes during the
Modification Procedure Only 5-13
8421 Indicator Codes during
IML That Result from
an Incorrect Modification Procedure 5-14
Valid Key Positions during Backup System Diskette
Generation
6-6
Valid Key Positions dUring Backup System Diskette
Generation When Using Japanese Katakana and
Japanese English Keyboards
6-7
Inserting a Diskette into the 3274 Control Unit 6-8
Operator Codes During Backup System Diskette
Generation Only 6-10
Steady 8421 Indicator Codes during Backup
. System Diskette Generation Only 6-11
Flashing 8421 Indicator Codes during Backup
System Diskette Generation Only 6-12
8421 Indicator Codes during
IML That Result
from an Incorrect Backup System Diskette
Generation 6-13
Example
of a Printer Authorization Matrix C-3
Example of a Completed Printer Authorization
Matrix Form
C-5
Printer Authorization Matrix Worksheet Example
(Models
lA, 1B, 1C, and 10) C-6
Sample Printer Authorization Matrix Worksheet
(Models
lA, 1B, 1C and 10) C-7
Sample Printer Authorization Matrix Worksheet
(Model 51C)
C-8
Contents xiii

Summary of Amendments (March 1980)
to GA27-2827-S by Revision GA27-2827-6
This revision contains the following new material:
• Procedures for setting up and customizing the 3274
Model SIC. This includes updates to general
descriptions, sequence numbers, and diagrams for the
SIC. .
• New sequence numbers for:
Structured field and attribute processing (SF
AP)
Extended character set adapter
Programmed symbols terminals
Decompression
Advanced function keyboards
• An explanation of Configuration Support C.
• New 8421 codes.
• Chapter 7: Update Diskette Installation Procedure has
been rewritten
to clarify the procedure.
• Sequence number 343 has been renamed Communica-
tion Interface Option and expanded
to allow designation
of the X.21 Leased adapter.
• Sequence number 313 has had a second entry added:
Internal or External Clocking for
BSC.
• The validation number has been changed to 06 through-
out the manual.
xiv
Summary of Amendments (October 29, 1979)
to GA27-2827-4 by Revision GA27-2827-S
This edition contains the follOWing significant changes from
the previous edition:
1. An explanation of the various levels of 3274 Configura-
tion Support has been added.
2. A recommended sequence for installing a 3274 sub-
system has been added.
3. Additional responses have been added
to sequence
number 113 (Extended Function Store).
4. The following sequence numbers have been added to
the customizing process. Each requires a I-digit (0 or
1) response:
161 -Color (Models lA, IB, lC, and 10)
305 - BSC Printer Polling.(ModellC BSC only)
S. Sequence number 215 has been renamed "Physical
Unit Identification (PUID)," and its use has been
clarified.
6. Appendix 0 has been added
to provide verification of
the 3274 subsystem after customizing is completed and
IML has been performed. The procedure in this
appendix should be given
to the customizing operator
along with the filled-in customizing form.
7. Appendix E provides procedures for converging color
patterns on the 3274 during customizing.
8. The Validation Number has been changed to
OS and
listed on the cover
of the manual.

Chapter 1. Planning and Setup
Introduction This planning and setup guide will help you plan the installation
of the IBM 3274 Control
Unit Models lA, I B, and ID and/or the setup of the following 3270 Information Display
System units:
IBM 3274 Control Unit ModellC
IBM 3274 Control Unit Model SIC
IBM 3278 Display Station
IBM 3279 Color Display Station
IBM 3287 Printer
IBM 3289 Line Printer
These units have convenient customer access areas to which your personnel can attach the
cluster cables and the keyboard and feature cables.
The 3274 (all models), 3278, 3279, 3287, and 3289 units are delivered with unpacking
instructions attached to an outside surface
of the shipping carton. In addition to the
unpacking instructions, the 3274 Models 1
C and 51 C, 3278, 3273287, and 3289 units
have setup instructions inside the shipping carton. The unpacking instructions and the
setup instructions are step-by-step procedures that describe the unpacking and setup tasks
for the unit. The 3274 must also be customized for the unique cluster configuration.
Chapters 2, 3, and 4 provide the information needed to prepare for, and to customize, all
models of the 3274. Included is a suggested form to use when customizing the 3274.
Chapter 2 also describes the procedure for installing update diskettes sent to you from
time
to time by IBM. Chapter 5 provides the information and procedure to modify a
system diskette. Chapter 6 provides the information and procedure to generate a backup
(duplicate) system diskette. Chapter 7 provides the information needed and the
procedures for installing an updated diskette package.
Using the planning information in this guide will help you
to ensure that your personnel
can (1) unpack, position, set up, customize (3274), and check out the 3274 Models lC
and SIC, 3278,3279,3287, and 3289 units, and (2) unpack, position, attach the device
cables (coaxial cables that connect the 3274 to the attached units) to, and customize the
3274 Models I
A, 1 B, and ID without the help of IBM service representatives (an IBM
service representative will install the 3274 Models lA, IB, and ID). As a result, you will
be able to use your new display/printer cluster at an early date.
If, later, you choose to
improve the work flow by relocating these units within the site, your personnel should be
able to accomplish the relocation (the help
of an IBM service representative is needed to
relocate a 3274 Model
lA, IB, or ID).
3274 Cluster Unit Descriptions
The 3274 cluster consists of an IBM 3274 Control Unit with attached display stations
and/or printers.
For detailed information about the functions and feq.tures
of the 3274 and the units that
can be attached to the 3274,
seethe latest editions of:
An Introduction to the IBM 3270 Information Display System, GA27-2739
IBM 3270 Information Display System: Component Description, GA27-2749
IBM 3270 Information Display System: Character Set Reference, GA27-2837
Otapter 1. Planning and Setup 1-1

Configuration Planning
System Planning
Site Preparation
To plan the configuration of the 3274 and the attached units, use the appropriate (U.S.,
Americas/Far East, or Europe/Middle East/Africa) Configuration Tables in IBM 3270
Information Display System: Configurator, GA27-2849. These tables will help
you
determine which feature codes are needed to:
• Connect the:
a. 3274 Model lA, lB, or lD to a host system through a local channel.
b. 3274
ModellC or SIC to a host system through communication facilities.
• Provide the required quantity of 3274 terminal adapters.
• Provide feature compatibility among the individual units.
The tables also indicate necessary features, optional features, prerequisite features, and
features that cannot coexist.
The following tasks should be planned so
that they can be accomplished in a timely
manner:
• Site preparation for the 3274 clusters
• Communication facilities preparation for 3274 Models 1C and 51 C
• Host system channel preparation for 3274 Models 1
A, IB, and lD
• Programming support preparation
• 3274 pre-delivery planning activities
It may be useful
to designate to a person in your organization the responsibility of
ensuring that all these tasks are planned. The Planning Checklist in Appendix A of this
guide contains the events, in a suggested sequence, that should be planned in order to
install a 3274 Model lA, IB, or lD and/or set up a 3274 Model lC or 5IC and the
attached units for the first time;
it therefore contains more detail than is required for
adding to or replacing an existing display/printer system. In either case, each event should
be carefully considered so that installing the 3274 Model lA, lB, or lD and/or setting up
the 3274 Models 1
C and 51 C and the attached units is problem-free.
The specifications for all physical requirements
of the 3274,3278,3279,3287, and 3289
units are given in IBM 3270 Information Display System: Installation Manual -Physical
Planning, GA27-2787.
This guide will help you provide compatibility between these units and the following:
• Work space considerations
• Electrical requirements
• Cable requirements and installation
• Power cord plug requirements
• Environmental requirements
Communication Services (3274 Models lC, 51C)
1-2
Arrangements need to be made for the installation of the communication facilities
between the 3274 Models lC, SIC and the host communication unit/adapter. There must
be compatibility between Models 1C and 51 C, the modems, the communication line, and
the communication unit/adapter; for example, line speed, duplex or half-duplex facilities,
and NRZ (non-return
to zero) or NRZI (non-return to zero inverted).

Compatibility among these components is a major consideration in new installations. To
reduce delays caused by incompatibility, it
is recommended that you request assistance
from your communications representative and from your
IBM representative to
determine whether the 3274 Models lC and SIC, modems, communication line, and
communicatiounit/adapter are compatible. In addition, schedules should be established
to
ensure that the modems, communication line, and communication unit/adapter are
installed and tested before delivery of Models 1C and 51 C and the attached units.
Local Channel Attachment(3274 Models lA, IB, and ID)
A plan needs to be established for required changes to your host system selector,
multiplexer, or block multiplexer channel configuration; considerations should include
device priorities, device data rates, device addresses, I/O interface cable lengths, and
changes
to the sequence and control (power sequencing and emergency power off) cables.
The Channel Attachment Information Form in Appendix B should be completed before
the 3274
is delivered. This information will be required by the IBM service representative
at the time
of installation. The following information will assist you in completing the
form. For further information,
see the IBM System/370 Installation Manual -PhYSical
Planning, GC22·7004. The 3274 Models,
lA, IB, and 10 may be attached to a byte
multiplexer, block multiplexer, or selector channel. In most cases the choice
of channel
attachment depends on system considerations such
as channel utilization rather than
3274 operation.
Selector or Block Multiplexer Channel (Non-Byte Mode Operation):
If you choose to
attach the 3274 Model lA, IB, or lD to a block multiplexer or selector channel, the
following options should be selected:
1. Select the 100-Kb data rate (ModellA only).
2. Select burst mode for Model lA. No selection is required for Models IB and 10.
3. Select the priority that will produce the greatest channel efficiency with other
attached devices. Factory wiring
of high priority is recommended.
The 3274 Models lA, lB, and ID are designed to operate with disconnect command
chaining (DCC). Therefore, they will provide greater channel efficiency
on a block
multiplexer channel than on a selector channel.
Byte Multiplexer Channel (Byte Mode Operation):
If you choose to attach the 3274
Model 1
A, 1 B, or 1D to a byte multiplexer channel, the following considerations and
selections should be made:
1. a. Select byte mode for Model 1 A.
b. Select burst mode for Models lB and 10 only if the 3274 is the only device on
the channel. In all other cases select byte mode.
2. Select a priority that
is below all overrunnable devices on the channel. This can be
accomplished by channel cabling between devices and/or the channel priority
options.
3. On the Model
lA, select the data rate that will produce maximum channel utilization
with other devices attached to the same channel. There is no data rate selection
option on the Models IB and
10.
When choosing a control unit address for the 3274 Model lA, you may use anyone of
the 2S6 possible addresses. The 3274 ModelslB and 10 are very similar to the 3272. The
hexadecimal address
of the control unit must be a multiple of hex 10 (hex 00, hex 10,
hex 20, etc.). If more than 16 devices are attached, the control unit address must be a
multiple
of hex 20 (hex 00, hex 20, hex 40, etc.).
Chapter 1. Planning and Setup 1-3

Programming Support
Response Time
Configuration Support
1-4
The 3274 Models IS and 10 also require an address range. Calculate the number of
contiguous addresses as follows:
8 X Number
of Type A Terminal Adapters + 4 X Number of Type B Terminal
Adapters
For example, a control unit address of hex 20 with 2 Type A Terminal Adapters and 3
Type B Terminal Adapters Would be 16 + 12::: 28. Therefore, 28
is the number of
contiguous addresses. The 3274 Models IB and 10 will then respond to addresses hex 20
through hex 3B.
It is important to plan for proper programming support at the host system. The 3274
clusters can
be added to most 3270 display/printer systems with minimal impact on the
existing programs. In certain cases, however, host system 'definition (SYSGEN)
parameters will have to
be changed to accommodate attachment of a 3274 cluster.
Infonnation on programming requirements
is given in An Introduction to the IBM 3270
Information Display System, GA27-2739, Introduction to Programming the IBM 3270,
GC27-6999, and IBM 3270 Information Display System: Component Description,
GA27·2749.
In addition, it is recommended that for 3274 clusters you enhance your system
availability and serviceability
by installing the Online Test Executive Program (OLTEP) at
the host system. Contact your
IBM representative for information about OLTEP.
The response time (performance/throughput) of the devices (displays and printers)
attached to a 3274 can be significantly affected
by many factors. Some of these factors
are:
1. Inbound and outbound message lengths.
2. Frequency and content
of message. (tabbing, R/MOTs, selects, etc.)
3. Type
of channel and size of CPU.
4. Protocol (SNA or non-SNA; BSC or SOLC).
5. Cluster size, network content, and line speed.
6. Printer speed and type (with or without intelligence, matrix or line printing, LUI,
LU2,
or LU3 mode, and with or without color option).
7. Screen size and features (PS, color, etc).
8. The associated system control and application programs.
To assist you to determine response time during the early planning stages
of your 3274
display/printer subsystem,
it is recommended that you contact your IBM sales representa-
tive.
He has the tools and facilities to evaluate your 3274 subsystem response time.
There are multiple levels
of diskettes (Configuration Support levels) available for the
3274 Control Unit. These levels allow selection
of the diskettes (feature and system) that
will satisfy your requirements.
If you update your 3270 system with additional functions you may also have to change
your Configuration Support level. Consult your
IBM representative for specific functions
included in each Configuration Support level.

Configuration Support A
Configuration Support B (#9111)
Configuration Support C (#9112)
This configuration support is shipped with all 3274s unless configuration support B or C
is specified. It is the base level of 3274 support including base color on attached
terminals,plus support
of solicitation of summary maintenance statistics from a 3274
ModellC or 5lC with SNA/SDLC IML.
(Models
lA, lC, lD, 5lC only). This support provides support for all 3270 functions
included in configuration support A, plus the ability
to attach 3278 Display Station
Model 5's, and support for the following functions:
• Pacing of inbound message traffic (Models lA, IC/SNA, 5IC/SNA)
• Automatic session recovery in
both single and multidomain networks (Modell C/SNA)
• Host notification
of changes in the power on/off status at attached terminals (Models
IA and lC/SNA, 51C/SNA)
This support provides support for all 3270 functions included in configuration B plus
support for the following additional functions: .
• Structured field and attribute processing (SF
AP)
• Programmed symbols (PS) on attached terminals
• Extended color on attached terminals
• Extended highlighting
• Decompression of PS load data
• Switched network operation (SNA/SDLC)
•
BSC text blocking
• BSC transparency
Encrypt/Decrypt Feature (3274 Models
lC and SIC)
It is the customer's responsibility to install a copy of the secondary logical unit (LU) key
(the terminal master key) in the 3274 Control Unit Model IC or
51 C equipped with the
Encrypt/Decrypt feature (#3680). This should be done by someone in a position
of trust,
such
as a security officer. Once the terminal master key has been installed in the 3274,
the 3274 generates a verification pattern based on the terminal master key. A master-key
verfication procedure can be performed
by any operator without compromising the
security
of the Encrypt/Decrypt feature. A mercury battery, IBM Part 1743456, is
installed in the 3274 to sustain the terminal master key when the 3274 power is off.
Replacing this battery, or its equivalent,
is also a customer responsibility. Procedures to
install and verify the terminal master key, and
to replace the mercury battery, are
described in IBM
3274 Control Unit Operator's Guide, GA23-0023.
The Encrypt/Decrypt feature should be installed on a new 3274 before the initial
customizing
is performed. If it is installed on a customized 3274, recustomizing is
necessary after installation. ~1he response to sequence number 352 (Encrypt/Decrypt)
must be changed
to aI.'
Refer also to IBM Cryptographic Subsystem Concepts and Facilities, GA22-9063, for
background information, and
to IBM 3270 Information Display System: Component
Description, GA27-2749, for programming information.
Chapter 1. Planning and Setup 1-5