Intermec CK30

Using Terminal Emulation ApplicationsChapter —2
14 TE 2000
 5250 Terminal Emulation Programmer’s Guide
Signal Keys
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.
Special Control Keys
Use special control keys to change operator-generated information in the
display. The keys do not work when the keyboard is locked.
Del Deletes the characte r in the position wh e re the curs or was
located. All remaining characters in the field shift to the
left to fill the column.
Erase Input Clears all fields to nulls, and cursor moves to the first in-
put position on s creen. This command does not erase
protected fields. If you press this key when the screen
shows only protected fields, the curs or returns to th e
home position.
Error Reset Restores the original data on t he error line of the display
and resets the state.
Hex Enters hexadecimal codes from the keyboard to generate
any EBCDIC characters needed for input or display.
Home Move s th e cu rsor to the position specified by th e ins e rt
cursor (IC) address.
Insert Sets or turns off the insert mode for the inpu t field the
operator has the cursor in. The operator must reset the
insert state before exiting it, by either pressing [RESET]
or [INSERT] again.
Shift Lock Puts the keyboard into shift lock mode.
Special Host Key
The special 5250 host key is System Request.
Sys Req Data on the error line is saved, the e rror 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 colu mn 2 to begin polling keystrokes.