HP-UX TN3270 Users Guide, March 1998
Table Of Contents
- Audience
- Fast Path to TN3270 Emulation and File Transfer
- Organization of This Guide
- Typographic Conventions
- Motif Version and Character-Based Version
- Help Screens
- HP-UX SNAplus2 TN3270 Documentation Set
- Related Publications
- 1 Introducing the TN3270 Emulation Program
- Overview
- Support of TN3270 Features
- Sessions
- Model 2-5 Display Support
- File Transfer
- Background Operation
- Temporary Exit from TN3270 Emulation
- Type-Ahead during TN3270 Emulation
- Local Copy
- Keyboard Remapping
- Keystroke Recording and Replay
- International Language Support
- 3270 Status Line
- Printer Emulation
- File, Customize, and Control Menus
- HLLAPI Support
- Where Do You Go from Here?
- Overview
- 2 The TN3270 Emulation Program User Interface
- 3 Getting Started with 3270 Emulation
- Overview
- Specifying the Path to TN3270 Product Programs
- Fast Path to 3270 Terminal Emulation
- Starting the TN3270 Emulation Program
- Using Menus and Dialog Boxes
- Running 3270 Emulation in the Background
- Overview of 3270 Operations
- 3270 Data Fields
- Double-Byte Characters
- Keystroke Recording and Replay
- Running HLLAPI Programs
- Moving from the Menu Interface to TN3270 Emulation
- Exiting the TN3270 Emulation Program
- Automating the TN3270 Emulation Start-Up
- Where Do You Go from Here?
- 4 Controlling 3270 Emulation
- 5 Transferring Files
- Overview
- Fast Path to File Transfer
- Preparing to Transfer Files
- Monitoring File Transfer Status
- Transferring Files Using the Menu Interface
- Transferring Files from the HP-UX Command Prompt
- Stopping a File Transfer in Progress
- Finishing File Transfer
- 6 Customizing 3270 Emulation
- 7 Solving Problems
- Overview
- 3270 Could Not Initialize due to Failure to Fork a...
- 3270 Emulation Program Not Found
- Cannot Get from 3270 Session to TN3270 Emulation P...
- Cannot Run 3270 Emulation in Background
- Cannot Run 3270 Emulation without a Menu Interface
- Cannot Tell Which Terminal Keys Correspond to Vari...
- Characters on Display Do Not Match Keys Pressed
- Customize Menu Options Not Selectable
- Display Colors Are Different from Those Selected
- Display Is Incomplete or Hard to Read
- Error Message—3270 User Not Found
- Error Message—No 3270 Sessions
- Error Message—No 3270 Users
- Failed to Initialize Windowing System
- Fields Cannot Be Changed or Edited
- File Menu Options Not Selectable
- File Transfer Process “Hung”
- HLLAPI Application Does Not Work
- Host Response Times Option Not Selectable
- Last Transaction Time Indicator (LTTI) on Status L...
- Main Screen Invoked Instead of 3270 Session
- Model Type Radio Group Is Not Selectable
- Open Option Is Not Selectable
- Style File Contains Invalid Maximum Structured Fie...
- Unable to Obtain System Semaphores
- Overview
- Functions within Groups and Corresponding Keys
- Alphabetical List of Functions and Corresponding K...
- Overview
- How the Status Line Is Displayed
- Overview of the Status Line
- Session Status Messages
- Do Not Enter Messages
- Communications Check Codes
- Last Transaction Time Indicator
- Cursor Width Indicator
- Numeric Indicator
- Insert Indicator
- Printer Identifier
- Record/Replay ID
- Host Session
- Cursor Position Message
- Session ID
- Program Check Codes
- Overview
- Menu Interface File Transfer Messages
- Host File Transfer Messages
- Overview
- Command Format
- Output
- Error Messages
- Overview
- Overriding Host Domain Names
- Overview
- Specifying Output Method
- SPOF Format
- Model Control Commands
Chapter 1 23
Introducing the TN3270 Emulation Program
Overview
TN3270E features are supported only if both the host and any
intermediate communications product also support TN3270E. When a
session starts, the TN3270 product and the host, or the intermediate
communications product, negotiate which protocols to support. The
Status field in the Control Display Sessions dialog box indicates which
protocol is supported on the active session. For more information, see
“Controlling Display Sessions”.
Unless specifically noted, TN3270 is used in this book to mean both the
standard TN3270 features and the extended TN3270E features.
The following functions included in Internet RFC 1647: TN3270
Enhancements are not supported:
• The device type IBM-DYNAMIC is not supported. When you configure
the 3270 emulation program, you specify a display model; the
emulator uses the device type that corresponds to the display model
you configured.
• The TN3270 product responds to keep-alive messages, but it does not
generate them. Keep-alive messages are generated to prevent a lost
TCP connection from being left open indefinitely. However, if a TCP
connection is lost, the TN3270 product detects a failure when a user
presses a key that should cause data to be sent to the host.
Sessions
Depending on your configuration, you may have as many as ten
concurrent 3270 sessions per TN3270 emulation program.
These sessions can consist of any combination of the following:
• IBM 3278/79 host display sessions (used for emulation, file transfer,
and HLLAPI applications)
• IBM 3287 host printer sessions
Different sessions can be connected to the same host or to different hosts.
(For more information, refer to the HP-UX TN3270 Administrators
Guide.)
Model 2−5 Display Support
The TN3270 emulation program supports the 3270 display models
shown in Table 1-1, “3270 Display Models.”