IOtech MultiScan 1200, Руководство пользователя

Страница: 353 / 364

TempScan / MultiScan User's Manual Appendix 343
ASCII Code Details
Decimal Values 00 to 31 – ACG & UCG Characteristics
ASCII Control Codes (Decimal 00 to 31)
Dec
Value
Hex
Value ($)
Character &
Abbreviation
Name Bus Message
Addressed Command Group (
ACG
)
00 $00
None / NUL
Null None
01 $01
^A / SOH
Start of Header Go To Local (
GTL
)
02 $02
^B / STX
Start of Text None
03 $03
^C / ETX
End of Text None
04 $04
^D / EOT
End of Transmission Selected Device Clear (
SDC
)
05 $05
^E / ENQ
Inquiry None
06 $06
^F / ACK
Acknowledgement None
07 $07
^G / BEL
Bell Parallel Poll Disable (
PPD
)
08 $08
^H / BS
Backspace Group Execute Trigger (
GET
)
09 $09
^I / HT
Horizontal Tab Take Control (
TCT
)
10 $0A
^J / LF
Line Feed None
11 $0B
^K / VT
Vertical Tab None
12 $0C
^L / FF
Form Feed None
13 $0D
^M / CR
Carriage Return None
14 $0E
^N / SO
Shift Out None
15 $0F
^O / SI
Shift In None
Universal Command Group (
UCG
)
16 $10
^P / DLE
Data Link Escape None
17 $11
^Q / DC1
Device Control 1 Local Lockout (
LLO
)
18 $12
^R / DC2
Device Control 2 None
19 $13
^S / DC3
Device Control 3 None
20 $14
^T / DC4
Device Control 4 Device Clear (
DCL
)
21 $15
^U / NAK
Negative Acknowledgement Parallel Poll Unconfig (
PPU
)
22 $16
^V / SYN
Synchronous Idle None
23 $17
^W / ETB
End of Transmission Block None
24 $18
^X / CAN
Cancel Serial Poll Enable (
SPE
)
25 $19
^Y / EM
End of Medium Serial Poll Disable (
SPD
)
26 $1A
^Z / SUB
Substitute None
27 $1B
^[ / ESC
Escape None
28 $1C
^\ / FS
File Separator None
29 $1D
^] / GS
Group Separator None
30 $1E
^^ / RS
Record Separator None
31 $1F
^_ / US
Unit Separator None
Note: (1) ASCII control codes are sometimes used to “formalize” a communications session
between communication devices. (2)
DC1, DC2, DC3, DC4, FS, GS, RS,
and
US
all
have user-defined meanings, and may vary in use between sessions or devices. (3)
DC4
is
often used as a general “stop transmission character.” (4) Codes used to control cursor
position may be used to control print devices, and move the print head accordingly. However,
not all devices support the full set of positioning codes.