Fluke 5502A - Page 168

5502A
Operators Manual
5-26
MESSAGE
DESCRIPTION
DATA
BUS
HAND-
SHAKE
BUS
MANAGEMENT
M
N
E
M
MESSAGE
NAME
T
Y
P
E
C
L
A
S
S
D
I
O
8
D
I
O
7
D
I
O
6
D
I
O
5
D
I
O
4
D
I
O
3
D
I
O
2
D
I
O
1
D
A
V
N
R
F
D
N
D
A
C
A
T
N
E
O
I
S
R
Q
I
F
C
R
E
N
ACG Addressed Command Group M AC 0 0 0 1
ATN Attention U UC 1
DAB Data Byte M DD B8 B7 B6 B5 B4 B3 B2 B1 0
DAC Data Accepted U HS 0
DAV Data Valid U HS 1
DCL Device Clear M UC 0 0 1 0 1 0 0 1
END End U ST 0 1
EOS End Of String M DD B8 B7 B6 B5 B4 B3 B2 B1 0
GET Group Execute Trigger M AC 0 0 0 1 0 0 0 1
GTL Go To Local M AC 0 0 0 0 0 0 1 1
IDY Identify U UC 1
IFC Interface Clear U UC 1
LAG Listen Address Group M AD 0 1 1
LLO Local Lock Out M UC 0 0 1 0 0 0 1 1
MLA My Listen Address M AD 0 1 B5 B4 B3 B2 B1 1
MTA My Talk Address M AD 1 0 B5 B4 B3 B2 B1 1
MSA My Secondary Address M SE 1 1 B5 B4 B3 B2 B1 1
NUL Null Byte M DD 0 0 0 0 0 0 0
OSA Other Secondary Address M SE (OSA = SCG and MSA-NOT)
OTA Other Talk Address M AD (OTA = TAG and MTA-NOT)
PCG Primary Command Group M ---- (PCG = ACG or UCG or LAG or TAG)
PPC Parallel Poll Configure M AC 0 0 0 0 1 0 1 1
PPE Parallel Poll Enable M SE 1 1 0 B4 B3 B2 B1 1
PPD Parallel Poll Disable M SE 1 1 1 B4 B3 B2 B1 1
PPR1 Parallel Poll Response 1 U ST 1 1 1
PPR2 Parallel Poll Response 2 U ST 1 1 1
PPR3 Parallel Poll Response 3 U ST 1 1 1
PPR4 Parallel Poll Response 4 U ST 1 1 1
PPR5 Parallel Poll Response 5 U ST 1 1 1
PPR6 Parallel Poll Response 6 U ST 1 1 1
PPR7 Parallel Poll Response 7 U ST 1 1 1
PPR8 Parallel Poll Response 8 U ST 1 1 1
PPU Parallel Poll Unconfigure M UC 0 0 1 0 1 0 1 1
REN Remote Enable U UC 1
RFD Ready For Data U HS 0
RQS Request For Service U ST 1 0
SCG Secondary Command Group M SE 1 1 1
SDC Selected Device Clear M AC 0 0 0 0 1 0 0 1
SPD Serial Poll Disable M UC 0 0 1 1 0 0 1 1
SPE Serial Poll Enable M UC 0 0 1 1 0 0 0 1
SRQ Service Request U ST 1
STB Status Byte M ST B8 B6 B5 B4 B3 B2 B1 0
TCT Take Control M AC 0 0 0 1 0 0 1 1
TAG Talk Address Group M AD 1 0 1
UCG Universal Command Group M UC 0 0 1 1
UNL Unlisten M AD 0 1 1 1 1 1 1 1
UNT Untalk M AD 1 0 1 1 1 1 1 1
Figure 5-7. IEEE-488 Remote Message Coding