Ieee 488 bus commands – Measurement Computing DAC488 v.1 User Manual
Page 100
94 Appendix
DAC488 User’s Manual
IEEE 488 Bus Commands
Bus State
IEEE 488 Bus Command
Data Transfer (DIO) Lines
(ATN is asserted “1”)
8
7
6
5
4
3
2
1
DCL
Device Clear
0
0
0
1
0
1
0
0
GET
Group Execute Trigger ($08)
0
0
0
0
1
0
0
0
GTL
Go To Local ($01)
0
0
0
0
0
0
0
1
LAG
Listen Address Group ($20-3F)
0
0
1
a
d
d
r
n
LLO
Local Lock Out ($11)
0
0
0
1
0
0
0
1
MLA
My Listen Address
0
0
1
a
d
d
r
n
MTA
My Talk Address
0
1
0
a
d
d
r
n
PPC
Parallel Poll Config
0
1
1
0
S
P2
P1
P0
PPD
Parallel Poll Disable ($07)
0
0
0
0
0
1
1
1
PPU
Parallel Poll Unconfig ($15)
0
0
0
1
0
1
0
1
SCG
Second. Cmd. Group ($60-7F)
0
1
1
c
o
m
m
d
SDC
Selected Device Clear ($04)
0
0
0
0
0
1
0
0
SPD
Serial Poll Disable ($19)
0
0
0
1
1
0
0
1
SPE
Serial Poll Enable ($18)
0
0
0
1
1
0
0
0
TAG
Talker Address Group ($40-5F)
0
1
0
a
d
d
r
n
TCT
Take Control ($09)
0
0
0
0
1
0
0
1
UNL
Unlisten ($3F)
0
0
1
1
1
1
1
1
UNT
Untalk ($5F)
0
1
0
1
1
1
1
1
Hexadecimal & Decimal Values
Hexadecimal Value
$80
$40
$20
$10
$08
$04
$02
$01
Decimal Value
128
064
032
016
008
004
002
001