Component Description for the IBM 3776 and 3777 .'

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Systems

I

GA27-3145-2 File No. S370-09

Component Description for the IBM 3776 and 3777 .'

Communication Terminals

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- - - -

_-~---_-~-.-

_- - - - - _---- ^----

^~--

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Federal Communications Commission (FCC) Statement

Warning: This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions manual, may cause interference to radio communications. It has been tested and found to comply with the Limits for a Class A computing device pursuant 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 expense will be required to take whatever measures may be required to correct the interference.

The FCC statement above applies to machines of the following types which are newly manufactured after January 1, 1981, and which will be used in the United States.

Third Edition (January 1981)

2502 Card Reader 3203 Printer Model 3 3262 Printer Models 2 and 12 3411 Magnetic Tape Unit 3501 Card Reader 3521 Card Punch

3776 Communication Terminal Models 3 and 4 3777 (all models) Communication Terminal 3782 Card Attachment Unit Model 1 3784 Printer Modell

Machines subject to part 15 of the FCC Rules will bear appropriate compliance labels. Other communication terminals mentioned in this manual are either out of production or are not in new production.

This is a major revision of and obsoletes GA27-3145-1 [and Technical Newsletters GN27-3246, GN27-3247, and GN27-3258. See the Summary of Changes page for brief descriptions of changes made to this publication by revisions and Technical Newsletters. A change to the text or to an illustration is indicated by a vertical line to the left of the change.

Changes are made periodically to the information herein; before using this publication in connection with the operation of IBM systems or equipment, consult the latest IBM System!370 and 4300 Processors Bibliography, GC20-000 1, 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 reader's comments is provided at the back of this publication. If the form has been removed, comments may be addressed to IBM Corporation, Information Development,

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Preface

This publication presents introductory and reference information about the IBM 3776 and 3777 Communication Terminals. It describes the capabilities and functions provided by these terminals for those concerned with planning for a data communications network or for integrating the terminals into an existing network. It is also a reference source for system and application programmers, and for personnel planning job setups for the 3776 and 3777 terminals. Although it describes the operating controls, this manual is not intended to provide detailed operating procedures. These controls are described here only to illustrate the capabilities, functions, and features of the 3776 and 3777 terminals. Application personnel planning job setups for these terminals will also require a copy of the appropriate Operating Procedures Guide. (See "Related

Publications". )

It is assumed that the reader of this manual understands the concept and application of the IBM System/370 in a data communications environment, and is familiar with data link control procedures-Synchronous Data link Control (SDLC) or Binary Synchronous Communication (BSC), whichever is used. General information about data link control procedures can be found in the General Information manuals for SDLC or BSC listed in

"Related Publications". Specific information about BSC and SDLC required by system and application programmers is contained in this Component Description publication.

Information about publications concerning host processor programming systems can be found in the publication IBM System/370 and 4300 Processors Bibliography, GC20-0001.

Other publications pertinent to the 3770 terminals are listed in "Related Publications".

Chapter I of this publication is an introduction to the IBM 3776 and 3777 Communica- tion Terminals; Chapter 2 describes the 3776 Models I and 2/3777 Modell Communica- tion Terminals; Chapter 3 describes the 3777 Model 2 Communication Terminal; and Chapter 4 describes the 3776 Models 3 and 4/3777 Models 3 and 4 Communication Terminals.

Chapter 5 describes the I/O devices attachable to the 3776 and 3777 terminals. Chapter 6 provides information about Binary Synchronous Communications (BSC) as it applies to the 3776 Models and 2/3777 Model I terminals. Chapter 7 provides information about System Network Architecture/Synchronous Data Link Control (SNA/SDLC) Communi- cations as applied to the 3776 Models I and 2, and 3777 Modell. Chapter 8 provides information about SNA/SDLC communications applied to the 3776 Models 3 and 4/3777 Models 3 and 4.

The appendixes supply reference information (codes, character sets, card specifications, throughput, and data format) and recommended handling procedures for IBM diskettes and magnetic tape.

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Related Publications

• Introduction to the IBM 3770 Data Communication System, GA27-3144

• Operating Procedures Guide: IBM 3776 Communication Terminals, GA27-3107

• IBM 3776 Communication Terminal Reference Summary, GA27-3108

• IBM 3776 Models 3 and 4 and IBM 3777 Model 3 Communication Terminals Operator's Guide, GA27-3165

• IBM 3777 Model 4 Communication Terminal Operator's Guide, GA27-3309

• IBM 3776 Models 3 and 4 and IBM 3777 Model 3 Communication Terminals Operator's Reference Summary, GA27-3166

• Operating Procedures Guide: IBM 3777 Modell Communication Terminal, GA27-3124

• IBM 3777 Modell Communication Terminal Reference Summary, GA27-3125

• IBM 3777 Model 2 Communication Terminal Operator's Guide, GA27-3129

• IBM 3777 Model 2 Communication Terminal Reference Summary, GA27-3130

• IBM 3203 Printer Component Description and Operator's Guide, GA33-1515

I •

IBM 3262 Printer Models 2 and 12 Component Description, GA24-3737

• IBM 3410/3411 Magnetic Tape Subsystems Component Description, GA32-0022

• IBM 3410/3411 Operator's Guide, G232-0004

• Component Description/or the IBM 3771,3773,3774, and 3775 Communication Terminals, GA27-3146

• General Information-Binary Synchronous Communications, GA27-3004

• Synchronous Data Link Control General Information, GA2 7 -3093

• Systems Network Architecture General Information, GA27 -3102

• Introduction to Advanced Communication Function, GC30-3033

• IBM Remote Multiplexers and Communications Terminals Installation Manual- Physical Planning, GA27-3006

• IBM 3262 Printer Site Planning and Preparation Guide, GA24-3734

• IBM 3770 Physical Planning Template, GX27-2917

• Printer Forms Layout Sheets, GX20-1816

• Forms Design Reference Guide for Printers, GA24-3488

I •

IBM System/370 and 4300 Processors Bibliography, GC20-0001

• Planning and Installation of a Data Communication System Using IBM Line Adapters, GA24-3435

• IBM 3863 Modem Models 1 and 2;IBM 3864 Modem Models 1 and 2: Setup Instructions and User's Guide, GA27-3216

• IBM 3865 Modem Models 1 and 2 Setup Instructions and User's Guide, GA27-3218

• IBM 3872 Modem User's Guide, GA27-3058

See also the "Related Publications" section in Chapter 7 of this manual for specific SNA manuals. See also the Bibliography section of Introduction to the IBM 3770 Data Communication System, GA27-3144.

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..

ASP Remote Job Processing Support . OS/VS2 JES2 Generation •

Installing JES2 • JES2 Initialization Remote Job Entry • . Default Parameters Other Parameters OV /VS2 ASP Generation •

ASP Requirements for RJP Terminals OS/VS2 JES3 Generation .

JES3 Initialization Card Parameters •

• 2-18 2-18

• 2-19

• • 2-19

· • 2-19

• • 2-19

• 2-19 2-19 2-19 2-20

• • 2-20

• • • 2-21

• . 2-21

• 2-21 2-21

• . 2-21

• 2-21

· 2-21

· • 2-23 2-23

· 2-24

• 2-26

· 3-1 3-1 3-2 3-2 3-2

· 3-3 3-3 3-3

· 3-3 34 34

· 34 3-5

• 3-6

· 3-6 3-7 3-7 3-7 3-8 3-8 3-8 3-9 3-9 3-10 3-10 3-10 3-10 3-11 3-11 3-11 3-11 3-12 3-12 3-13 3-13

• 3-13

• 3-13 3-15

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RSCS Requirements for RTP Program Functional Characteristics (3777 Model 2) Workstation Controller. • • • • •

Job Control •

Data and Space Compression/Expansion • Problem Determination . • • • Error Logging • • • • Operator Attention Speaker Keyboard

Features and Accessories (3777 Model 2) Console Display . . . • •

Messages. . HoldMode .

Retrieving Previous Messages • Keyboard Input •

Keyboard Input-System Requests. • Console Display Spooling •

Diskette Create Function • Spooling Diskette Records. • Spooling Diskette Data Sets No Spool Function. • • Print Messages Operation Diskettes.

Diskette Input Device . .

·0

· 3-15

• 3-16 3-16

• 3-16 3-16 3-17 3-17 3-17 3-17

• • • • 3-18 3-18 3-18 3-19 3-19 3-19 3-19 3-20 3-20 . 3-20 3-21 3-22 3-22 . • 3-22 3-22

· 3-23 Input Diskette Data Sets •

List Diskette Function . . • • • • • 3-24

Door Keylock Keylock . Audible Alarm . Operator ID Reader . Katakana Character Set

Keyboard

Print Train Arrangements • Interface Features •

EIA RS-232C Interface CCITT V.24/.28 Interface . High-Speed Digital Interface CCITT V.35 Interface •

V.35 Interface/High-Speed Local Attachment to 3705-11 • Operating Controls (3777 Model 2) • •

Auxiliary Operator's Panel. • . • • Keyboard Switches, Keys, and Lights

Switches. .

Keys.

Lights

Chapter 4. 3776 Models 3 and 4/3777 Models 3 and 4 SNA Multiple Logical Unit Workstations.

Multiple Sessions Concatenated Input Data

Functional Characteristics (3776 Models 3 and 4/3777 Models 3 and 4) . 3777 Model 4 Exception Summary .

Procedure Definition Prompts.

Print Trains . U sel Save/Restore Trace.

Forms Length Forms Alignment Power On.

Features Controller

• • • • 3-24 3-24 3-24

• • 3-24 3-24 3-24 3-24

• 3-25 3-25 3-25 3-25

• 3-25

· 3-25 3-26 3-26 3-27 3-27 3-28 3-30

• 4-1

· 4-2

· 4-5

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Remote Job Processing.

Local Job Processing

Data and Space Compression/Expansion • Data Decompaction .

Problem Determination Error Logging

Operator Attention Speaker . Keyboard/Console Display

Messages.

Message Area of Display Screen Message Area of Display Screen Entry Area of Display Screen • Line Printer .

Vertical Format Control Horizontal Format Control Printer Control Characters • Forms Enclosure (3776 Only) . International Print Support (3777 Only) Terminal Operator Commands

System Job-Processing Commands Enable Communications (ENABLE) Enter Cryptographic Key (KEY) . Initiate Host Input Data (INPUT)

Assign a Host Output Destination (OUTPUT) . Printer Set Up (PRINT)

Specify Punch Check Option (PUNCHECK) • Cancel Device Operation (CANCEL). . Request Shutdown (RSHUTD)

Defmition Commands for Stored Procedures Types of Defmition Commands

Meanings of Words .

Specification Common to Deflinition Commands . Defme the Terminal Initialization Procedure (TIP) . Defme an SSCP Message (SSCP) .

Defme a Host Input Procedure (HOSTlN) Defme a Host Output Relationship (HOSTOUT) Defme Printer Carraige Control (CARRAIGE) . Defme a Print Train Image (TRAIN) (3777-3 Only) Defme a Copy Procedure (UTILITY) .

Terminal Storage Space Used by Definition Commands Procedure-Related Commands

Execute a Stored Procedure (EXECUTE) Display Defmitions and Status (DISPLAY)

Dummy Devices for Procedure Delmition (DUMMYDEV) Save User Procedures (USERSAVE) .

Restore User Procedures «USERREST) Terminal Utility Commands .

Copy Data (COPY) . Create Diskette (CDISK)

Create Diskette Data Set (CDATA SET) • Change Diskette Data Set Label (CD LABEL) Delete Diskette Data Set (DELETE) List Diskette LabelS (LISTDISK) • List Spooled Messages (LISTSPOL) . List Error Log (LISTLOG)

Save/Restore Diskette (SAVEREST) . Find a Message (FIND) . . • . .

• 4-5 4-5

• • • 4-6

· • 4-6

· . • 4-6 4-7

· 4-7

· 4-8

• 4-8

• 4-9

· • • 4-10

· • 4-10

· 4-12

• 4-12 4-12

· 4-13

· 4-14

• • 4-14

• 4-15

• 4-17

· • 4-18

• 4-20

· • 4-22 4-22

· 4-23 4-23

· 4-24

· 4-24 4-24

· 4-25 4-26 4-26 4-26 4-28

· 4-28

• 4-29 4-31 4-33 4-33 4-33 4-34.1

· 4-35 . • • • 4-35

• 4-36

· 4-36 . • . • • 4-36

• 4-36

· 4-37

• 4-37

• • 4-37

· 4-38

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Write/Print Tape Volume Label (TLABEL) . Control Tape (TAPE) .

Miscellaneous Commands . Execute Tests (TESTS) Line Trace (TRACE) Line Statistics (LINE) . Tape Statistics (TSTAT) Terminal Status (STATUS) Power Off Terminal (POWEROFF) Set Date and Time (SET) .

Set/Change Security Code (SECURITY) .

Features and Accessories (3776 Models 3 and 4/3777 Models 3 and 4) Magnetic Diskette Storage .

Operations . Diskette Records Diskette Data Sets Data Set Labels . Basic Exchange Format Diskette Create Function . Diskettes.

Data Set Allocation . Starting Record Number Operator ID Reader.

Front Feed (3776 Only) Door Keylock

Keylock . ASCII

Cryptographic (Encrypt/Decrypt) Feature Cryptographic Subsystem Functions by Product Preparing the Terminal for Cryptographic Sessions . Establishing a Cryptographic Session with the Host Inbound Cryptographic Data (MLU to Host) Outbound Cryptographic Data (Host to MLU) Communication/Interface Features . .

EIA RS-232C Interface (U.S.A. and Canada) CCl1"T V.24/V.28 Interface

CCITT V.35 Interface .

CCITT X.21 Interface (World Trade) . High-Speed Digital Interface .

Digital Data Service Adapter (DDSA-U.S.A. only) . V.35 Interface/High-Speed Local Attachment to a 370S-II Switched Network Backup (U.S. and Canada)

Katakana Feature

Additional Print Belts (3776 Only)

Additional Print Trains (3777/3203 Only) . Additional Print Bands (37774/3262 Only) .

Operating Controls (3776 Models 3 and 4/3777 Models 3 and 4) . Auxiliary Operator's Panel and Battery Enclosure .

Keyboard Switches, Keys, and Lights (Figure 4-6 & 4-7) Switches

Keys.

Lights.

Chapter 5. I/O Attachments IBM 3203 Printer Model 3 .

3203 Printer Characteristics 3203/1416 Character Set Trains 3203 Speed Enhancement Feature IBM 3262 Printer Models 2 and 12

3262 Printer Characteristics Printing Method .

Printer Addresses and Selection Print Command .

IBM 2502 Card Reader.

4-38

• 4-38 4-39 4-39 4-39 4-39

· 4-39

· 4-39 4-39

· 4-39

• 4-40

· 4-41 4-41 4-41 4-42 4-42 4-43 444 444 444

· 4-44 4-44 4-45 4-45 445 4-45

· 445 446 446 448 4-48 4-49 4-49 4-51 4-51 4-51 4-51 4-51

· 4-51 4-52

· 4-52

· 4-52 4-52 4-52.1 4-52.1

4-53 4-53 4-55 4-55 4-55 4-60 5-1 5-1 5-1 . 5-2 . 5-3 5-3 5-4 5-4 5-5 5-5 5-5

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2502 Functional Characteristics 2502 Special Features . 2502 Operator's Panel .

IBM 3501 Card Reader (3776 Models 1 and 2 Only) 3501 Functional Characteristics

3501 Operator Controls IBM 3521 Card Punch •

3521 Functional Characteristics 3521 Special Features' . 3521 Operator's Panel .

IBM 3411 Magnetic Tape Unit Modell . Operations

Tape Records Tape Files (Data Sets) Labeled Tape Contents . Unlabeled Tape Contents . Variable Length Records . Tape Usage Considerations

Chapter 6. BSC Programming Considerations for 3776 Models 1 and 2/3777 Modell .

2770 Compatibility with the 3776-1/3776-2/3777-1 3780 Compatibility with the 3776-1/3776-2/3777-1 BSC Data Link Control Characters

SOH (Start of Heading)

ITB (End of Intermediate Transmission Block)

WACK (Wait Before Transmit Positive Acknowledgment) • RVI (Reverse Interrupt)

TTD (Temporary Text Delay) . NAK (Negative Acknowledgment) Abort Conditions

Transmitter Abort . Receiver Abort .

3770 Transmission of Null Buffer to Host Processor BSC Printer Control Characters

NL (New Line) .

IRS (Interrecord Separator) CR (Carraige Return) VT (Vertical Tab) . FF (Forms Feed) HT (Horizontal Tab) LF (Line Feed) BS (Backspace) . NUL (Null) .

IGS (Space Expansion) . BSC ESC (Escape) Sequences Horizontal Tab Format Message Vertical Tab Format Message • Forms Alignment Consideration BSC Component Selection

Point-to-Point Networks Multipoint Networks Exception Conditions . Selection Characters Inquiry Mode

Terminal Identification (Switched Network) Remote Power Off .

Chapter 7. SNA/SDLC Programming Considerations for 3776 Models 1 and 2, 3777 Modell

Introduction to 3770 SNA Components of the System

VT AM (Virtual Telecommunications Access Method) TCAM (Telecommunications 'Access Method)

5-6 5-8 5-10 5-12 5-12 5-14 5-14 5-14 5-15 5-16 5-17

· 5-17

• 5-17

· 5-18

· .5-18

· 5-19

· 6-1 6-1 6-1

• • 6-4

• 6-4 6-4

· 6-4 . . 6-6 6-6

· 6-6 . • • 6-6 6-6 6-7 . • . 6-7

• 6-7

· 6-8

• 6-8

· 6-8 6-9 6-9 6-9

• 6-9

· 6-9

• 6-9

· 6-9

· 6-11 6-11 6-12 6-12 6-12

· 6-15

• 6-15

• 6-15 6-16 6-16 6-17

7-1

· 7-1 7-1

· 7-2 7-2

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3770 SNA Characteristics . 3770 SNA Communications SNA Transmission Blocks PIU Formats.

Data Chaining Bracket Protocol Transaction Modes

Installing an IBM 3770lSNA System Related Publications

Introduction and General Information Manuals . Concepts, Facilities and Planning Manuals Program Generation and Installation Manuals Program Reference Manuals

Operator's Manuals .

Writing NCP Generation Macro Instructions .

System and Configuration Definition Macro Instructions Additional NCP/3770 Definition Considerations Generating the NCP Load Module

Filing NCP Instructions for Use by TCAM

Coding and Filing the VTAM Defmition Statements

Coding, Assembling, and Installing Application Programs that Use TCAM Activating and Loading the NCPs .

Activating 3770 VT AM Operator Commands Operational Considerations

Transmission Headers .

Sense Data - Inbound Error Response 3770 Considerations for the Bind Command

Function Management (FM) ProfIle Transmission Services (TS) Proflle Primary (Host) Protocol

Secondary (3770) Protocols Common Protocols . Responses

Definite Response (DR 1/2) Exception Response (EX) . Interactive Operator Interface.

ID Reader Secure Data .

Function Management Header.

FM Header Type 1 . FM Header Type 3 .

Inbound Data from 3770 to Host Processor.

Inbound Card Data . Inbound Disk Data . Inbound Keyboard Data

Outbound Data from Host Processor to 3770 Outbound Card Data

Outbound Diskette Data Outbound Printer Data.

SNA Format Controls . Set Horizontal Format (SHF) Set Vertical Format (SVF) . Horizontal Tab (HT) Vertical Tab (VT) Line Feed (LF) . Form Feed (FF) . Record Separator (IRS).

New Line (NL) . Carriage Return (CR) Backspace (BS) . Inhibit Print (INP) . Enable Print (ENP) . Secure String Reader (SSR)

7-2 7-3 7-11 7-12 7-13 7-13 7-15 7-16 7-16 7-17 7-17 7-18 7-19 7-19 7-19 7-20 7-20 7-21 7-21 7-21 7-21 7-21 7-21 7-22 7-22 7-22 7-22 7-22 7-22 7-22 7-23 7-23 7-24 7-24 7-24 7-25 7-25 7-25 7-25 7-26 7-27 7-28 7-28 7-28 7-29 7-29 7-29 7-30 7-30 7-30 7-30 7-32 7-34 7-34 7-34 7-35 7-35 7-35 7-36 7-36 7-36 7-36 7-36

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Select (SEL) . . . . 7-36

Transparent (TRN) . 7-37

Undefined Graphics 7-37

SCS Error Summary 7-37

SDLC Considerations . 7-38

Terminal ID . . . . . 7-38

Outstanding Frames 7-38

Fan Out and SNBU 7-38

Remote Power Down " 7-38

Chapter 8. SNA/SDLC Programming Considerations for 3776 Models 3 and 4,

3777 Models 3 and 4. . . . 8-1 Installing an 3776/3777 MLU Terminal in an SNA System 8-1 Related Publications. . . . 8-1 NCP Generation Macro Instructions . . . . 8-1 NCP System and Configuration Definition Macro Instructions. 8-2

NCL Line and Terminal Definition Macro Instructions 8-2

OS/VSl RES Generation with the 3776/3777 MLU . . 8-3

RTAM Generation. . . . 8-4

Programming Considerations for VS 1 RES/R T AM . 8-4

DOS/VS POWER/VS Generation with the 3776/3777 . 8-5

Generating POWER/VS . . . . 8-5

Programming Considerations for DOS/VS POWER/VS 8-5

OSjVS2 1ES2 Generation with the 3776/3777 MLU 8-6

1ES2 Initialization . . . . 8-6

Programming Considerations for OS/VS2 JES2 . 8-7

OS/VS2 JES3 Generation with the 3776/3777 MLU 8-7

1ES3 Initialization. . . . 8-7 Logon to 1£S3 . . . . 8-8

Programming Considerations for OS/VS2 1ES3 . 8-8

Programming Considerations for R1E Throughput. . . 8-8

Pacing and Line Buffering. . . .• 8-9 Medium/Subaddress Considerations . . . . 8 .. 11 System Generation Considerations for Terminal Initialization . 8-11

3770 SNA Characteristics. . . . 8-12

37770 SNA Communications. 8-12

SNA Transmission Blocks. 8-14

PIU Formats . . . . 8-15

Data Chaining. . . . 8-16

3770 SNA Bracket Protocol 8-17

SNA Transaction Modes. . . 8-19

Transmission Headers . . . .

3770 Considerations for the Bind Command

Re~on~s . . . . Session Control Commands . . . . Data Flow Control Commands . . . . . Sense Data (Inbound Error Responses) Function Management Header Network Services.

Unattended Mode ..

Console Support . . . Remote Power Down Interactive Operator Interface

ID Reader . . . . Secure Data . . . ..

Operational Considerations for MLU Terminals Inbound Data from 3770 to Host Processor.

Concatenated Data . . . • . . . . .

Outbound Data from Host Processor to 3770. . . . SNA Fonnat Controls .

SDLC Considerations . . . .

8-19 8-19 8-21 8-22 8-30 8-32 8-35 8-37 8-40 8-41 8-41 8-41 8-41 8-41 8-42 842 843 843 844 849

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Appendix A. Code Charts . A-I

Appendix B. Character Sets B-1

Appendix C. Card Specifications C-l

2502 Punched Card Specifications. C-l

2502 OMR Card Specifications (3776-1/2 Only) . C-l

Reflectance Measurements C-l

Card Stock . . . . . . C-l

Marking Constraints C-2

OMR Columns . . . . C-2

OMR Fields. . . . C-2

3501 Card Specifications C-4

3521 Card Specifications C-4

Appendix D. Throughput. . . . D-l

Throughput Controlling Factors . . . . . D-l

3776 Console-Mounted Line Printer. D-l

Card Input/Output. . . . D-2

Diskette . . . . D-2

Communication Line Throughput D-2

System Performance. . . . D-4

One Input, One Output . . D-4

Two Inputs, Two Outputs. . D-7

Device Performance - Online . . D-9

3262 Model 2 Printer Performance. . D-17

Diskette Performance - BSC N on programmable Models. D-21 Appendix E. Data Format . . . . E-l Diskette Track Formats. . . . E-l

Track/Sector Assignment - 3776/3777 and other 3770 Non-Programmable

Models . . . : . . . . E-I

Track/Sector Assignment - Programmable 3770 Models. E-2

Diskette Volume Label E-3

Diskette Data Sct Label . E-4

Diskette Compatibility . . . E-5

Exchange Type Indicator E-5

Special Requirements Indicator E-5

Extent Arrangement Indicator . E-6

Owner Identification (lD) Field E-7

Card Image Formats. . . . E-IO

Magnetic Tape Formats . . . . E-13

Labeled Tape Contents . . . . . E-13

Magnetic Tape Volume Label. . E-14

Magnetic Tape Data Set Labell E-14

Magnetic Tape Data Set Label 2 E-15

Tape End-of-File and End-of-Volume Label Differences E-15

Unlabeled Tape Contents . . . . E-16 Appendix F. Features, Care, and Handling of IBM Diskettes. F-l Labels . . . . F-I

Permanent Diskette Label. . . . F-l

Temporary Adhesive Identification Label. F-l

Physical Features (Figure F-2) . . . . F-2

Index Hole . . . . . . . F-2

Drive Access Opening and Drive Spindle Hole F-3

Pressure Pad Slot and Head Slot . F-3

External Labels. F-3

Handling and Care . . . . . F-4

Storage . . . F-4

Shipping and Receiving F-4

Handling. . . . F-5

Diskette Replacement . F-5

Diskette and Associated Supplies Availability [0'-6

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Figures

Appendix G. ASCII Feature Difference . . . . Keyboard . . . . . . . . . . . . . 3521 Card Punch . . .

Operational Differences ..

Keyboard . . . .

RSC Space Compression/Expansion 2502/3782 with Optical Mark Read Control Characters ..

3776 Performance . . . . Appendix H. Tape Handling and Storage.

Tape Handling Tape Handling . . . .

G-l G-l G-l G-l G-l G-l G-l G-l G-2 H-l H-l H-l

Abbreviations. Abbr-]

Glossary. Glos-l

Index ..

1-1 1-2 1-3 14 1-5 1-6 1-7 1-8 1-9 1-10 2-1 2-2 2-3 2-4 2-5 2-6 2-7 3-1 3-2 3-3 3-4 3-5 3-6 3-7 4-1 4-2 4-3 4-4 4-5 4-6 4-7

IBM 3776/3777 Data Communication Terminals Summary (3 Parts) ..

IBM 3776 Communication Terminal Modell or 2 . . . . IBM 3777 Communication Terminal Model 1 Configuration . . . . 3776 Models 1 and 2/3777 Models 1 Operations . . . . IBM 3777 Communication Terminal Model 2 Configuration . . . . .

IBM 3776 Communication Terminal Model 3 or 4 Configuration.

IBM 3777 Communication Terminal Model 3 Configuration .. . IBM 3777 Communication Terminal Model 4 Configuration .. . 3776 Models 3 and 4/3777 Models 3 and 4 Operations . . . . Communications Facilities and Line Speeds. . . . . . . . . 3776-1/3777-2/3777-1 Dual Buffer Operation. . . . . . . .

3776-1/3776-2 with Diskette Storage Device 1 . . . . . . . 3776-1/3776-2 with Diskette Storage Device 2 . . . . . . . Operator ID Reader. . . . . . . . Modem Fan Out Configuration. . . . . . . . . . Auxiliary Operator's Panel. . . . . . . . 3776-1/3776-2/3777-1 Keyboard. . . . . . . . . Example of How MULTI-LEAVING Works . . . . IBM 3777 Communication Terminal Model 2 ConIIguration .. . 3777 Model 2 Console Display Feature . . . .

3777 Model 2 Console Display Spooling Feature. . . . 3777 Model 2 Diskette Input Device Feature . . . . Auxiliary Operator's Panel . . . .

3777 Model 2 Keyboard . . . .

Single and Multiple Session Example. . . . . .. . . . . . . Concatenated Data Example.. . . . . . . . . . . Console Display Areas and Uses. . . . . . . . . Example of Establishing a Cryptographic Session . . . . 3776/3777 MLU Auxiliary Operator's Panel and Battery Enclosure.

3776 Models 3 and 4 Keyboard. . .. . . .

3777 Models 3 and 4 Keyboard. . . ..

X-I

1-2 1-5 1-6 1-7 1-7 1-10 1-10 1-11 1-13 1-17 24 2-11 2-12 2-17 2-20 2-22 2-23 3-2 3-3 3-18 3-21 3-23 3-26 3-27 4-3 44 4-9 448 4-54 4-56 4-57

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5-1 IBM 3203 Printer Model 3. . . .. 5-1 5-2 IBM 3262 Printer. . . .. 5-4 5-3 IBM 2502 Card Reader Model AI, A2, or A3/3782 Card Attachment

Unit, Model 2. . . .. . . . .. 5-5 5-4 2502 Attachment to 3776/3777 Terminals. . . .. 5-6 5-5 Punched and OMR Data . .'. . . .. 5-9 5-6 2502 Operator's Panel . . . .. 5-11 5-7 IBM 3501 Card Reader. . . .. 5-12 5-8 IBM 3521 Card Punch/3782 Card Attachment Unit, Modell. . . . ~ 5-15 6-1 2770 Feature Summary Compared to 3776-1/3776-2/3777-1. . . .. 6-2 6-2 3780 Feature Summary Compared to 3776-1/3776-2/3777-1. . . .. 6-3 6-3 BSC Control Vocabulary. . . .. 6-5 6-4 BSC Escape Sequences. . . .. 6-10 6-5 Forms Alignment Considerations (2 Parts). . . .. 6-13 7-1 Example of an SNA Network. . . .. 7-1 7-2 Example of Establishing SNA Communications. . . .. 7-5 7-3 Example of Terminating SNA Communications. . . .. 7-5 7-4 SNA Network Commands (5 Parts). . . .. 7-6 7-5 PIU Formats in the 3770 SNA Network. . . .. 7-12 7-6 Examples of Bracket Protocol (2 Parts) . . . .. 7-13 7-7 Bracket Request Accept/Reject Table. . . .. 7-15 7-8 IBM 3770 Communication Terminal in an SNA/SDLC Network. . . .. 7-16 8-1 3776/3777 MLU Terminal in an SNA/SDLC Network. . . .. 8-1 8-2 Example of Establishing SNA Communications. . . .. 8-13 8-3 Example of Terminating SNA Communications. . . .. 8-14 8-4 PIU Formats in the 3770 SNA Network. . . .. 8-16 8-5 Examples of Bracket Protocol (2 Parts) . . . .. 8-17 8-6 Bracket Request Accept/Reject Table. . . .. 8-19 8-7 SNA Network Commands. . . .. 8-24 A-I EBCDIC Code Set (2 Parts) . . . .. A-2 A-2 ASCII Code Set. . . .. A-3 B-1 EBCDIC Printable Characters (4 Parts). . . .. B-2 B-2 ASCII Printable Characters . . . .. B-5 B-3 Katakana Character Set . . . .. B-5 B-4 Operator Identification Card Reader Character Set. . . .. B-6 B-5 EBCDIC Character Set for the Console Display Feature on 3776/3777

Models (l,024-character display). . . .. B-7 B-6 AN Train Image Cards . . . .. B-8 B-7 EBCDIC Character Chart. . . .. B-9 B-8 EBCDIC Character Chart - National Use Differences (3 Parts). . . .. B-lO B-9 Print Band Characters . . . .. B-13 B-10 Canadian French 116-Character Set . . . .. B-14 B-ll Katakana Character Set . . . .. B-15 C-l Positioning ofM-5 and CF-4 Scores. . . .. C-l C-2 Marking Constraint Specifications . . . . C-2 C-3 OMR Input Card Specifications. . . .. C-3 D-l Character Rates and Representative Turnaround Delays. . . .. D-3 D-2 3776 Modell Line-to-Printer Throughput (BSC). . . .. D-9 D-3 3776 Modell Line-to-Printer Throughput (SDLC). . . .. D-lO D-4 3776 Model 3 Line-to-Printer Throughput (BSC). . . .. D-ll D-5 3776 Model 2 Line-to-Printer Throughput (SDLC). . . .. D-12 D-6 3777 Modell Line-to-Printer Throughput (BSC). . . .. D-13 D-7 3777 Modell Line-to-Printer Throughput (SDLC) . . . D-14 D-8 3777 Modell Line-to-Printer (1200 lpm) Throughput (BSC). . . .. D-15 D-9 3777 Modell Line-to-Printer (1200 lpm) Throughput (SDLC) . . . D-16 D-10 One 3262-2 Printer, 48 Character Band-Nominal Throughput. . . .. D-17 D-ll One 3262-2 Printer, 64 Character Band-Nominal Throughput. . . .. D-18 D-12 Two 3262-2 Printers, 48 Character Band- Nominal Throughput D-19 . D-13 Two 3262-2 Printers, 64 Character Band-Nominal Throughput. . . .. D-20

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£-1 Diskette Track Formats (2 Parts). . . .. £-1

£-2 Diskette Volume Label . . . ~ . . . .. £-3

£-3 Diskette Data Set Label . . . .. E-4

£-4 Diskette Compability (2 Parts) . . . .. . . . .. E-8

£-5 80 Column Card Data, BSC Non-Transparent. . . .. E-10

£-6 80 Column Card Data, BSC Transparent. . . .. £-11

£-7 Short Card Data, BSC Transparent. . . .. £-12

£-8 Labeled Magnetic Tape Contents. . . .. £-13

£-9 Magnetic Tape Volume Label . . . .. E-14

£-10 Magnetic Tape Data Set Labell. . . . E-14 E-11 Magnetic Tape Data Set Label 2. . . .. E-15

£-12 Magnetic Tape EOF and EOV Label Differences . . . .. E-15

£-13 Unlabeled Magnetic Tape Contents. . . .. E-16 F-1 IBM Diskette . . . .. . . . .. F-1 F-2 Diskette Features. . . .. F-2

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Summary of Amendments for GA27-314S-2

Information has been added on the 3777 Model 4 and the 3262 line Printer Models 2 and 12. These changes and additions affect mainly Chapters 1,4,5, and 8. Changes are indicated by a vertical bar to the left of the change.

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Chapter 1. Introduction

The IBM 3770 Data Communication System is a family of multi-purpose keyboard/printer terminals (fixed-function or programmable) and attachable I/O devices. This manual describes the remote job entry (RJE) terminals that are part of the 3770 system:

• The IBM 3776 Communication Terminal Models I and 2 and the IBM 3777Communica- tion Terminal Modell are medium-to=high-speed RJE terminals that use either BSC or SDLC communications (or both under switch control), for general RJE applications.

• The IBM 3777 Communication Terminal Model 2 is a high-speed RIE terminal operating with the BSC MULTI-LEAVING support provided by certaiil host RJE subsystems~ This terminal executes· the workstation program generated by the host system for an IBM System/360 Model 20 Submodel 5.

• The IBM 3776 Communication Terminal Models 3 and 4 and IBM 3777 Communica- tion Terminal Models 3 and 4 are medium-to-high-speed RJE terminals using the multiple logical unit (MLU) protocol. Systems Network Architecture (SNA) provides MLU protocol to interleave up to six independent data streams to and from the host.

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References to "3770" in this manual, unless specifically noted otherwise, are intended to mean models of the 3776 and 3777.

Introductory information about these and other 3770 terminals is contained in Introduc- tion o[the IBM 3770 Data Communication System, GA27-3144. Component information, similar to that contained in this manual, for the general purpose 3770 terminals is contained in Component Description [or the IBM 3771,3773,3774, and 3775 Communi- cation Terminals, GA27-3146. Information for the progr~able 3773, 3774, and 3775 Communication Terminals is contained in IBM 3773, 3774, and 3775 Programmable Com- munication Terminals Programmer's Guide, GC30-3028.

Figure I-I is a summary of the remote job entry terminals, attachable input and output media, and features offered by each of these terminals. The Extended Binary Coded Dec- imal Interchange Code (EBCDIC) is standard on all terminals.

Component Description for the IBM 3776 and 3777 Communication Terminals 1-1

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Machine Description

Type (Basic Machine) Specify Features

3776 Keyboard and Control Panel Language Group

Printer Remote Power Off

Model 1 "':'160,230, or 300 Ipm using Keyboard 94-,64-, or 48 character Arrangement set respectively (3776-1) 48-, 64-, or 94- Model 2 -230, 300, or 400 Ipm using Character Set

94-,64-, or 48 character Print Belt in set respectively (3776-2) Standard Char-- 4800 bps Maximum Line Speed acter Set, or Operator Selectable Dual 48 Character Set

256- or 512-Byte Buffer Print Belt (in Electronic Forms Control EBCDIC) in HN Horizontal Format Control Character Set Automatic Answering 127 Character Set Data Compression/Expansion Print Belt

TerminallD (katakana)

Operator Attention Speaker Variable Width Forms Tractor Dual Data Path

Record Compression of Basic Exchange Diskette Records Transmission Reversal

3776 Keyboard and Control Panel Language Group

Printer Remote Power Off

Model.3 -160,230, or 300.lpm using Keyboard 94-, 64-, or 48, character Arrangement set respectively (3776-3) 48-, 64-, or 94- Model 4 -230, 300, or 400 Ipm using Character Set 94-, 64-, or 48 character Print Belt in set respectively (3776-4) Standard Char- 19.2 kbps Maximum Line Speed acter Set, or (20.4 kbps in World Trade) 48 Character Set 1024"Character Display for Print Belt (in

Console Message Display and EBCDIC) in HN

Operator Guidance Character Set

Console Message Spooling into 127 Character Set

Terminal Storage Print Belt

Stored Job Procedures in' (katakana) Terminal Storage

SNA/SDLC Communications with up to Six Concurrent Logical Unit Sessions

Electronic Forms Control Automatic Answering Operator Attention Speaker Variable Width Forms Tractor Data Compression/Expansion Data Decompaction

tAttach via the 3782 Card Attachment Unit. One card reader (2502 or 3501) can be attached. The 2502 may include the OMR feature. The 3521 Card Punch can have the Card Read and Card Print Special Features.

=l=Purchase Only Accessories

*Attach via the 3782 Card Attachment Unit. The 3521 Card Punch can have the Card Read and Card Print Special Features.

Other Attachable I/O Media

Magnetic Diskettp. Storage (two Devices:

485,376 Bytes) t2502 Card Reader

(150 or 300 cpm)

3501 Card Reader (50 cmp) t3521 Card Punch (50 cpm)

Magnetic Diskette Storage (two Devices:

485,376 Bytes) 3411 Magnetic Tape Unit

(1 Device)

*2502 Card Reader (150, 300, or 400 cpm)

*3521 Card Punch (50 cpm)

Figure 1-1. IBM 3776/3777 Data Comunication Terminals Summary (Part 1 of 3)

Special Features and Accessories

2400 bps I ntegrated Modem

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4800 bps Integrated Modem Switched Network Backup Modem Fanout

EIA-RS232C Interface CCITT V.24/.28 Interface CCITT X.21 Interface (nonswitched) Keylock

Operato~ I D Reader Door Keylock Audible Alarm Communication Driver

(Without Clocking) Communication Feature

SDLC

BSC Point-to-Point SDLC/BSC Switch Control BSC Multipoint Operation ASCII

Additional Print Belts:f Front (forms) Feed High-Speed Digital Interface EIA-RS232C Interface CCITT-V.24/V.28 Interface CCITT-V.35 Interface CCITT X.21 nonswitched Interface.

High-~peed Local Attachment to a 3705-11 using the V.35 Interface Feature

Digital Data Service Adapter (DDSA)

Keylock

Operator ID Reader Door Keylock Audible Alarm ASCII

Additional Print Belts=l=

Front (forms) Feed

Cryptographic (Encrypt/Decrypt) Mercury Battery=l=

Component Description for the IBM 3776 and 3777 .'

Systems

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Component Description for the IBM 3776 and 3777 .'

Communication Terminals

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Federal Communications Commission (FCC) Statement

Preface

Related Publications

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Contents

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Figures

Summary of Amendments for GA27-314S-2

Chapter 1. Introduction

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