Intermec CV30 Intermec Terminal Emulator (ITE) Programmer's Reference Manual - Page 29

Chapter 1 - About 3270 and 5250 Programming • If the MDT bit is not set, the user receives: • If the master MDT bit is set, the user receives: The field data consists of the contents of all input fields as they appear on the display, unless resequencing is specified. Any attributes contained in a field are treated as data and returned as such. Field boundary attributes are not considered part of the field. 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 character is changed to hex D. In each case, the returned cursor address indicates the current location of the cursor and the AID code is hex 00. Note: Queued Read commands and pending AID codes are not cleared. The format table, display annunciators, insert mode keying history, and display contents are not affected. Description: Format: Results: Read Modified Immediate Alternate The Read Modified Immediate Alternate command enables the host to read data from modified input fields without depending on the operator to press an AID request key. 04 72 (Hex) This command is processed the same as the Read Immediate command, except for these differences in the format of data sent to host: • Controller only returns data from those fields in the format table that have the MDT bit on. • Data field is delimited by Set Buffer Address (SBA) orders in the same way as the response data field for the Read MDT Fields command. • Leading/imbedded nulls in each field's data are not converted to blanks. • Trailing nulls within each field's data are suppressed. Description: Restrictions: Read Input Fields The Read Input Fields command causes the computer to wait for the operator to press an active AID-generating key, then sends the contents of all fields defined in the format table to the host. The operator must press an AID-generating key to execute this command. Also, CD in the Request/Response Header (RH) must be on before the AID byte can be serviced. This command is cleared if: • The host system issues a session control request (such as Unbind). • The host system issues a Clear Unit command and the controller executes it. • The host system sends another Read command to the same LU and overlays this command. • The Read command is executed. Intermec Terminal Emulator (ITE) Programmer's Reference Manual 17