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Intermec CV30 Intermec Terminal Emulator (ITE) Programmer's Reference Manual - Page 54

VT/ANSI Programming, Encoding Characters, About Character Sets, Multinational Character Set

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Chapter 2 - About VT/ANSI Programming VT/ANSI Programming The following information is for VT/ANSI programming: • The received codes the computers support. Received codes include C0 and C1 control characters, character sets, and computer modes. • The transmitted keyboard codes generated by the computer keys and sent to the host computer. • The capability of the computers to emulate VT/ANSI computer top-row function, main keypad, editing, and auxiliary keys. • VT340 applications supported by the computers. Applications include working in local editing and interactive modes, and creating text forms. • Printing bar code labels and RFID tags using Intermec Printer Language (IPL). Encoding Characters The implementation of VT/ANSI computer emulation supports both 7-bit and 8bit communications environments. The implementation consists of an 8-bit asynchronous character encoding scheme and a 7-bit code extension technique so that the computer is compatible with ANSI and ISO standards. All 8-bit codes can be referenced by using two-byte ESCape sequences in accordance with ANSI standard X3.41 -- 1974. The document referred to when ANSI is mentioned is ANSI X3.64 -- 1979, Additional Controls for Use With American National Standard for Information Interchange. The ANSI X3.64 standard controls character imaging devices such as the VT200 computer. About Character Sets The computer processes most characters it receives from the host computer based on characters whose codes and functions are defined and standardized by ANSI. The types are 7-bit and 8-bit character codes. Multinational Character Set The DEC multinational character set has C0, GL, C1, and GR codes. C0 and GL Codes The left half of the multinational character set consists of control characters (C0 codes) and graphic characters (GL codes). Control characters (C0 codes) are 7-bit compatible, non-displayable single-byte characters that perform specific functions during communications and text processing. C0 codes range from 00 to 1F hexadecimal including 7F (DEL) and can be used in a 7- or 8-bit environment. Graphic characters (GL codes) are 7-bit compatible, displayable characters that represent various alphanumeric characters, punctuation marks, and symbols that appear in the computer display. GL codes range from 21 to 7E hexadecimal. They can be used in a 7-bit or an 8-bit environment. The space character (20 hexadecimal) may be a graphic or a control character, depending on the context. 42 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

VT/ANSI Programming

The following information is for VT/ANSI programming:

•

The received codes the computers support. Received codes include C0 and C1

control characters, character sets, and computer modes.

•

The transmitted keyboard codes generated by the computer keys and sent to the

host computer.

•

The capability of the computers to emulate VT/ANSI computer top-row

function, main keypad, editing, and auxiliary keys.

•

VT340 applications supported by the computers. Applications include working

in local editing and interactive modes, and creating text forms.

•

Printing bar code labels and RFID tags using Intermec Printer Language (IPL).

Encoding Characters

The implementation of VT/ANSI computer emulation supports both 7-bit and 8-

bit communications environments. The implementation consists of an 8-bit

asynchronous character encoding scheme and a 7-bit code extension technique so

that the computer is compatible with ANSI and ISO standards. All 8-bit codes can

be referenced by using two-byte ESCape sequences in accordance with ANSI

standard X3.41 -- 1974.

The document referred to when ANSI is mentioned is ANSI X3.64 -- 1979,

Additional

Controls for Use With American National Standard for Information Interchange

. The ANSI

X3.64 standard controls character imaging devices such as the VT200 computer.

About Character Sets

The computer processes most characters it receives from the host computer based

on characters whose codes and functions are defined and standardized by ANSI. The

types are 7-bit and 8-bit character codes.

Multinational Character Set

The DEC multinational character set has C0, GL, C1, and GR codes.

C0 and GL Codes

The left half of the multinational character set consists of control characters (C0

codes) and graphic characters (GL codes).

Control characters (C0 codes) are 7-bit compatible, non-displayable

single-byte

characters that perform specific functions during communications and text

processing. C0 codes range from 00 to 1F hexadecimal including 7F (DEL) and can

be used in a 7- or 8-bit environment.

Graphic characters (GL codes) are 7-bit compatible, displayable characters that

represent various alphanumeric characters, punctuation marks, and symbols that

appear in the computer display. GL codes range from 21 to 7E hexadecimal. They

can be used in a 7-bit or an 8-bit environment. The space character (20 hexadecimal)

may be a graphic or a control character, depending on the context.