Intermec CK30

Display Data Stream—Chapter 6
259TE 2000
 5250 Terminal Emulation Programmer’s Guide
Data Stream Command Structure
The 5250 command structure enables the terminal to display prompts and
accept keyboard or scanner input. A second kind of command, called an
order, works with the Write-To-Display command to define display char-
acteristics, buffer sizes, and acceptable data types.
Display data stream commands form two categories: the input commands
and the output commands. The IBM 5250 Information Display System
Functions Reference Manual (IBM part number SA21-9247-6 provides
more detailed descriptions than those presented in this programmer’s
guide).
Input Commands and Hex Codes
Below are the input commands and hex codes. Page numbers reference
additional information about each command.
Input Commands (page references) Hex Code
Read Immediate (page 260) 72
Read Modified Immediate Alternate (page 261) 83
Read Input Fields (page 262) 42
Read MDT Fields (page 264) 52
Read MDT Alter nate (pa ge 266) 82
Read Screen (page 267) 62
Save Screen (page 268) 02
Write Stru c tured Field (page 269) f3
Output Commands and Hex Codes
Below are the output commands and hex codes. Pages reference additional
information about each command.
Outpu t Commands (page references) Hex Code
Clear Format Table (page 271) 50
Clear Unit (page 272) 40
Clear Unit Alternate Not supported
Restore S creen (page 273) 12
Roll (page 274) 23
Write Error Code (page 276) 21
Write to Display (WTD) (page 278) 11