Intermec CK30

Display Data StreamChapter —6
260 TE 2000
 5250 Terminal Emulation Programmer’s Guide
Input Commands
Input commands consist of immediate and AID-associated Read com-
mands. Immediate commands are executed when the controller receives
the command. AID-associated commands are queued until the operator
presses an AID-generating key such as Enter/Rec Adv. O ther AID-generat-
ing keys are listed in the chapter for each terminal.
Read Immediate
Function
The Read Immediate command is similar to the Read Screen command,
except the data comes from the format table rather than the display. The
command sends back the contents of all the input fields on the display.
Restrictions
This command must be the last command in the chain and the controller
must have change of direction (CD). The command is rejected if the ter-
minal is in an error, system request, or SS message state.
Note: If the display supports a separate message line, and the message line
is selected, the command is rejected only f or the system request and SS
message states. The command is processed with the display in error state.
Format
The command takes the following f orm:
ESC Read Immediate Command
Hex 04 Hex 72
Results
Information associated with this command returns to the user in the
LU-LU nonexpedited flow. What the user receives when they issue this
command depends on the condition of the master modified data tag
(MDT) bit:
S If the MDT bit is not set, the user receives:
Cursor Address AID Code
S If the master MDT bit is set, the user receives:
Cursor Address AID Code Field Data
The field data consists of the contents of all input fields as they appear on
the display, unless resequencing has been specified. Any attributes con-
tained in a field are treated as data and returned as such. Field boundary
attributes are not considered part of the f ield. All nulls are converted to
blanks. If the specified field is a signed numeric field, the last character is
not sent.
If that same field is negative, the zone position of the next-to-the-last char-
acter is changed to hex D. In each case, the returned cursor addr ess indi-
cates the current location of the cursor and the AID code is hex 00.