Signal Keys; Special Control Keys; Special Host Key - Intermec CK30 Programmer's Manual

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Chapter 2 Using Terminal Emulation Applications

Signal Keys

Special Control Keys

Special Host Key

14
Signal keys cause a Signal command to go from the controller to the host
system. The following describes the signal keys.
Attn The operator presses this key to alert the host system the
function request (such as [ENTER]) is not honored. Attn is
valid when the keyboard is locked or unlocked. It does not
change the keyboard state or the cursor location.
Help (from error state) The operator uses this key to request that the host system
send data about the error to the display.
Use special control keys to change operator-generated information in the
display. The keys do not work when the keyboard is locked.
Del
Erase Input
Error Reset
Hex
Home
Insert
Shift Lock
The special 5250 host key is System Request.
Sys Req
TE 2000
Deletes the character in the position where the cursor was
located. All remaining characters in the field shift to the
left to fill the column.
Clears all fields to nulls, and cursor moves to the first in-
put position on screen. This command does not erase
protected fields. If you press this key when the screen
shows only protected fields, the cursor returns to the
home position.
Restores the original data on the error line of the display
and resets the state.
Enters hexadecimal codes from the keyboard to generate
any EBCDIC characters needed for input or display.
Moves the cursor to the position specified by the insert
cursor (IC) address.
Sets or turns off the insert mode for the input field the
operator has the cursor in. The operator must reset the
insert state before exiting it, by either pressing [RESET]
or [INSERT] again.
Puts the keyboard into shift lock mode.
Data on the error line is saved, the error line is cleared, a
column separator and underscore field attribute are sup-
plied to column 1 of the error line, and the cursor is lo-
cated under column 2 to begin polling keystrokes.
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5250 Terminal Emulation Programmer's Guide