Intermec CV30 Intermec Terminal Emulator (ITE) Programmer's Reference Manual - Page 14

Data Stream Commands and Orders, Screen Design Aid, Applications, 3270 Data Stream Commands

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Chapter 1 - About 3270 and 5250 Programming 3270 Data Stream Commands and Orders This section describes 3270 SNA/SDLC and asynchronous display data stream commands and orders that the host application can send to the computers. Orders govern format and data expectations within a data stream command. Also included in this chapter is information on formatting data to be displayed on the computers. This section is not intended as a specific guide for programming, but as a comparison with your existing system. The information helps identify differences between your screen-generating utilities and features supported by the computers. Screen Design Aid This section, along with your Screen Design Aid (SDA) documentation, can help you resolve occasional questions concerning discrepancies that may arise regarding attribute selection and the capabilities of the computers. You can use your SDA to do much, if not all, of the programming to handle commands and orders for the network. This information is provided to assure you have the most accurate and detailed information available and to describe variations from the 3270 data stream where they occur. If you are comfortable using the SDA on your host computer, you can flip through this chapter to find out which commands and orders the computers support. For more information, see "About Extended Commands" on page 86. Applications If you need to write applications specifically for the computer, Intermec recommends that you use the corner mode window onto the 3278 Model 2 Computer and write programs using the portion of the display available without moving the window. This is the most efficient method for developing custom applications for the computer. 3270 Data Stream Commands The 3270 data stream consists of application data, commands and structured field functions, and orders which are transmitted between the controller and the host system. The computers support a subset of the IBM 3270 command structure to display and accept keyboard or scanner input. 2 Intermec Terminal Emulator (ITE) Programmer's Reference Manual

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Chapter 1 — About 3270 and 5250 Programming
2
Intermec Terminal Emulator (ITE) Programmer’s Reference Manual
3270 Data Stream Commands and Orders
This section describes 3270 SNA/SDLC and asynchronous display data stream
commands and orders that the host application can send to the computers. Orders
govern format and data expectations within a data stream command. Also included
in this chapter is information on formatting data to be displayed on the computers.
This section is not intended as a specific guide for programming, but as a
comparison with your existing system. The information helps identify differences
between your screen-generating utilities and features supported by the computers.
Screen Design Aid
This section, along with your Screen Design Aid (SDA) documentation, can help
you resolve occasional questions concerning discrepancies that may arise regarding
attribute selection and the capabilities of the computers. You can use your SDA to
do much, if not all, of the programming to handle commands and orders for the
network.
This information is provided to assure you have the most accurate and detailed
information available and to describe variations from the 3270 data stream where
they occur.
If you are comfortable using the SDA on your host computer, you can flip through
this chapter to find out which commands and orders the computers support. For
more information, see
“About Extended Commands” on page 86.
Applications
If you need to write applications specifically for the computer, Intermec
recommends that you use the corner mode window onto the 3278 Model 2
Computer and write programs using the portion of the display available without
moving the window. This is the most efficient method for developing custom
applications for the computer.
3270 Data Stream Commands
The 3270 data stream consists of application data, commands and structured field
functions, and orders which are transmitted between the controller and the host
system. The computers support a subset of the IBM 3270 command structure to
display and accept keyboard or scanner input.