Intermec CV30 Intermec Terminal Emulator (ITE) Programmer's Reference Manual - Page 33

Chapter 1 - About 3270 and 5250 Programming Restrictions: Format: • Keyboard state • Any outstanding AID requests • Any outstanding Read commands This command must be the last command in the SNA chain and CD must be on. The command is rejected if the addressed LU is in either the system request or SS message state. Byte 5 and all remaining bytes contain the Save Screen information. The Save Screen (Immediate) command is formatted as follows: ESC Hex 04 Save Screen (Immediate) Hex 62 The returned data is formatted as follows: Byte 1 Escape Byte 2 Restore Screen Byte 3 Byte 4 Results: All data required to restore the display is sent to the host system. It must not be modified by the host system if the result of the Restore Screen command is to have integrity. Description: Format: Write Structured Field The Write Structured Field command introduces a data field into the SNA flow. The host system uses this type of data structure to support the following operations: • Generation of a pass-thru data stream • Receipt of 5250 device functional information • Control over display stations during text support operation The Write Structured Field command is formatted as follows: ESC Write Structured Field Length Class Query Flag Hex 04 Hex f3 xx xx xx xx xx Note: Only command classes 0xd8 and 0xd9 are supported. For command class 0xd8, only type codes of 0x20 and 0x21 for query are supported. For command class 0xd9, only type code of 0x70 for query is supported. Results: The next table describes the response to the command: Write Structured Field Command Results Bytes 0-1 2 3-4 5 Command Class 0x00 0x00 0x08 Definition Cursor row/column Inbound Write Structured Field aid Length of query reply Command class Intermec Terminal Emulator (ITE) Programmer's Reference Manual 21