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C0 Control Characters and Computer Action

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Chapter 2 - About VT/ANSI Programming The next table lists the actions taken by the computer when a C0 code is received. C0 Control Characters and Computer Action Mnemonic Hex NUL 00 SOH 01 STX 02 ETX 03 EOT 04 ENQ 05 ACK 06 BEL 07 BS 08 HT 09 LF 0A VT 0B FF 0C CR 0D SO (LS1) 0E SI (LS0) 0F DLE 10 DC1 (XON) 11 DC2 12 DC3 (XOFF) 13 DC4 14 NAK 15 SYN 16 ETB 17 CAN 18 EM 19 Name Action Null Ignored. Start of heading Ignored. Start of text Ignored. End of text Ignored. End of transmission Ignored. Enquiry Generates Answerback message. Set number of characters in the message (0-30) through the computer firmware. If the computer is operating in ANSI mode, it ignores this character. Acknowledge Ignored. Bell Generates bell tone if bell is enabled. Backspace Moves cursor one column to the left, unless it is in Column 1. Horizontal tab Moves cursor to predetermined tab stop or to right margin. Line feed Causes LF or new line operation, based on LNM received code. Vertical tab Processes as LF (line feed). Form feed Processes as LF (line feed). Carriage return Moves cursor to Column 1 of the current row. Shift out (Lock Invokes G1 character set into GL. shift G1) Shift in (Lock shift G0) Invokes G0 character set into GL. Data link escape Ignored. Device control 1 Clears DC3 if XOFF support is enabled, which causes the computer to continue sending characters (keyboard unlocks). Device control 2 Ignored. Device control 3 If XOFF support is enabled, causes the computer to stop sending characters until it receives a DC1 control character. Device control 4 Ignored. Negative Ignored. acknowledgment Synchronous table Ignored. End transmission Ignored. block Cancel Terminates and cancels any sequence in progress. End of medium Ignored. 44 Intermec Terminal Emulator (ITE) Programmer's Reference Manual

Section	Page
Before You Begin	11
Global Services and Support	11
Warranty Information	11
Web Support	11
Telephone Support	11
Who Should Read This Manual	12
Related Documents	12
Chapter 1: About 3270 and 5250 Programming	13
3270 Data Stream Commands and Orders	14
Screen Design Aid	14
Applications	14
3270 Data Stream Commands	14
Erase All Unprotected	15
Erase/Write	15
Erase/Write Alternate	15
Read Buffer (RB)	15
Read Modified	16
Read Modified All	16
System Services Control Point (SSCP)	16
Write	16
3270 Data Stream Format	17
Computer Orders	19
Erase Unprotected to Address (EUA)	20
Insert Cursor (IC)	20
Program Tab (PT)	21
Repeat Address (RA)	21
Set Buffer Address (SBA)	22
Start Field (SF)	22
Start Field Extended	24
Set Buffer	25
Sending Data to the Host	26
3270 AID Keys	26
5250 Data Stream Commands and Orders	27
Screen Design Aid	27
Applications	27
Data Stream Command Structure	27
Input Commands	28
Read Immediate	28
Read Modified Immediate Alternate	29
Read Input Fields	29
Read MDT Fields	30
Read MDT Alternates	32
Read Screen (Immediate)	32
Save Screen (Immediate)	32
Write Structured Field	33
Output Commands	35
Clear Format Table	35
Clear Unit	35
Clear Unit Alternate	36
Restore Screen	36
Roll	37
Write Error Code	38
Write to Display (WTD)	40
5250 Data Stream Orders	42
Insert Cursor	42
Move Cursor	43
Repeat to Address	43
Set Buffer Address	43
Start of Field	44
Start of Header	49
Transparent Data	50
Asynchronous 5250 Prefixes	51
System Messages and Parameter Errors	51
Chapter 2: About VT/ANSI Programming	53
VT/ANSI Programming	54
Encoding Characters	54
About Character Sets	54
Multinational Character Set	54
DEC Special Graphics Character Set	60
National Replacement Character Sets	61
Character Set Selection	61
Received Codes	63
Select C1 Controls	63
Computer Modes	63
Cursor Positioning	66
Tab Stops	66
Character Rendition and Attributes	67
Select Graphic Rendition (SGR)	67
Select Character Attributes (DECSCA)	68
Line Attributes	68
Erasure Mode	69
Editing Sequences	70
Erasing Sequences	71
Scrolling Margins (Top and Bottom)	72
Printing	72
User-Defined Keys (DECUDK)	73
Using UDKs	73
UDK Memory Space	73
Programming UDKs	73
Loading UDKs	75
Down-Line Loadable Character Set	76
Reports	77
Device Attributes (DA)	77
Device Status Reports (DSR)	77
Identification	78
Computer Reset	78
Soft Computer Reset (DECSTR)	78
Hard Computer Reset (RIS)	79
Tests and Adjustments	80
VT52 Mode Escape Sequence	80
Define Area Qualification	80
Private Sequences	81
Proprietary Sequences	81
Line Edit and Character Modes	81
Norcompress	81
Scanner Lock Mode	81
VT340 Applications	82
Right Margin	82
Control Functions	82
Text Forms	82
IBM 330X Sequences	84
ANSI Mode Sequences	85
Cursor Positioning	85
Cursor Tabulation Control	85
Scrolling	86
Transmitted Keyboard Codes	86
Line Edit (Block) Mode	86
Character Mode	86
Transmitted Keypad Keys	87
Main Keypad	87
Editing Keypad	87
Auxiliary Keypad	88
Top-Row Function Keys	89
Local Edit Mode	89
Edit Mode and Interactive Mode	89
Local Editing Setup	90
Selecting Characters to Send	90
Guarded Area Transfer Mode (GATM)	91
Selected Area Transfer Mode (SATM)	91
Multiple Area Transfer Mode (MATM)	92
Defining Selected Areas	92
Local Edit Mode Keys	92
Scanning in Local Edit Mode	93
Set Transmit Termination Character (DECTTC)	93
Telxon Private Use	94
Using Intermec Printer Language (IPL)	95
Chapter 3: Extended Commands	97
About Extended Commands	98
Transmit and Receive On RS-232 Port (#F)	98
3270 and 5250 Data Streams	99
Return AID Key Characters	100
Return Codes for Transmit and Receive	101
Example of Transmit and Receive	101
VT/ANSI Data Stream	102
Conventional Method	103
Control Character Sequence Method	104
Flow Control	104
Return Codes for Transmit and Receive	105
Transmit Only On RS-232 Port (#P)	106
3270 and 5250 Data Streams	106
Return Codes for Transmit Only	107
Example of Transmit Only	107
VT/ANSI Data Stream	108
Conventional Method	108
Control Character Sequence Method	108
Flow Control	109
Return Codes for Transmit Only	110
Receive Only On RS-232 Port (#G)	110
3270 and 5250 Data Streams	110
Return Codes for Receive Only	112
Example of Receive Only	112
VT/ANSI Data Stream	113
Conventional Method	113
Control Character Sequence Method	113
Return Codes for Receive Only	115
Return Version (#V)	116
3270 Data Stream	116
5250 Data Stream	116
VT/ANSI Data Stream	117
Conventional Method	117
Control Character Sequence Method	117
Scan (#S)	118
Enabling and Disabling the Scanner	118
Conventional Method	118
Control Character Sequence Method	119
CC Byte 1	120
CC Byte 2	120
CC Byte 3	121
Bar Code Length	122
UPC	122
EAN Algorithms	123
Code 39	123
Plessey	123
Codabar	124
Code 11	124
Code 93	125
Code 128	125
Straight or Computer Identics 2 of 5	125
Interleaved 2 of 5	126
Return Codes for Scan Bar Code	126
Tone (#T)	127
3270 and 5250 Data Streams	127
VT/ANSI Data Stream	127
Conventional Method	127
Control Character Sequence Method	127
Return Codes for Tone	128
RFID Extended Commands	128
RFID (#A) Set Attributes command	128
3270, 5250, VT/ANSI Data Streams Conventional Method	128
VT/ANSI Data Stream Control Character Method	130
Return Codes for the RFID (#A) Set Attributes Command	130
RFID (#D) Define Format	131
3270, 5250, VT/ANSI Data Stream Conventional Method	131
VT/ANSI Data Stream Control Character Method	132
Return Codes for the RFID (#D) Define Format Command	132
RFID (#W) Write Tags	133
3270, 5250, VT/ANSI Data Streams Conventional Method	133
VT/ANSI Data Stream Control Character Method	134
Return Codes for the RFID (#W) Write Command	134
RFID (#J) Set Filter	135
3270, 5250, and VT/ANSI Data Streams Conventional Method	135
VT/ANSI Data Stream Control Character Method	136
Return Codes for the RFID (#J) Set Filter Command	136
About RFID Tags	137
Using Extended Commands to Print Custom Labels	138
Fingerprint Examples	138
Printing a Basic Label	139
Changing Print Orientation	139
Printing a Bar Code Label	139
ESC/P Examples	142
Using the #P Extended Command	142
Using the #F Extended Command	144
IPL Examples	145
Using #P and #F Extended Commands	145
Appendix A: Tables	149
Computer Font Set	150
Full ASCII Table	156
Decimal and Hexadecimal Values	159
Binary to EBCDIC Conversion Values	162
Appendix B: About RPC Implementation	165
About RPC XML in ITE	166
ITE Implementation	167
ITE Screen Contents	170
Attribute Definitions	174
Libraries and Linkage	175

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Chapter 2 — About VT/ANSI Programming

Intermec Terminal Emulator (ITE) Programmer’s Reference Manual

The next table lists the actions taken by the computer when a C0 code is received.

C0 Control Characters and Computer Action

Mnemonic

Hex

Name

Action

NUL

Null

Ignored.

SOH

Start of heading

Ignored.

STX

Start of text

Ignored.

ETX

End of text

Ignored.

EOT

End of

transmission

Ignored.

ENQ

Enquiry

Generates Answerback message. Set number of

characters in the message (0-30) through the

computer firmware. If the computer is operating

in ANSI mode, it ignores this character.

ACK

Acknowledge

Ignored.

BEL

Bell

Generates bell tone if bell is enabled.

Backspace

Moves cursor one column to the left, unless it is in

Column 1.

Horizontal tab

Moves cursor to predetermined tab stop or to

right margin.

Line feed

Causes LF or new line operation, based on LNM

received code.

Vertical tab

Processes as LF (line feed).

Form feed

Processes as LF (line feed).

Carriage return

Moves cursor to Column 1 of the current row.

SO (LS1)

Shift out (Lock

shift G1)

Invokes G1 character set into GL.

SI (LS0)

Shift in (Lock

shift G0)

Invokes G0 character set into GL.

DLE

Data link escape

Ignored.

DC1

(XON

)

Device control 1

Clears DC3 if XOFF support is enabled, which

causes the computer to continue sending

characters (keyboard unlocks).

DC2

Device control 2

Ignored.

DC3

(XOFF

)

Device control 3

If XOFF support is enabled, causes the computer

to stop sending characters until it receives a DC1

control character.

DC4

Device control 4

Ignored.

NAK

Negative

acknowledgment

Ignored.

SYN

Synchronous

table

Ignored.

ETB

End transmission

block

Ignored.

CAN

Cancel

Terminates and cancels any sequence in progress.

End of medium

Ignored.