Ascii code details…… 89, Characteristics…… 89, Ucg characteristics…… 89 – Measurement Computing Digital488/80A User Manual
Page 95: Ascii code details
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.
Digital488/80A User's Manual
Appendix B 89