Measurement Computing Analyzer488 - Manual (Page 107)

Section 4 Serial Controller
4.13
mode allows control of the IEEE 488 bus using high level commands.
Low Level Controller mode allows direct control over all data and bus
management lines using an alternate command set.
4.11.6 Bus States
This section describes the bus command and data transfers using
IEEE 488 bus mnemonics abbreviated as follows:
DIO lines
8 7 6 5 4 3 2 1
ATN Attention
data Data String
DCL Device Clear x 0 0 1 0 1 0 0
EOI End Or Identify
GET Group Execute Trigger x 0 0 0 1 0 0 0
GTL Go To Local x 0 0 0 0 0 0 1
IFC Interface Clear
LAG Listen Address Group x 0 1 a d d r n
LLO Local Lock Out x 0 0 1 0 0 0 1
MLA My Listen Address x 0 1 a d d r n
MTA My Talk Address x 1 0 a d d r n
PPC Parallel Poll Configure x 0 0 0 0 1 0 1
PPD Parallel Poll Disable x 1 1 1 0 0 0 0
PPE Parallel Poll Enable x 1 1 0 S P3 P2 P1
PPU Parallel Poll Unconfigure x 0 0 1 0 1 0 1
REN Remote Enable
SDC Selected Device Clear x 0 0 0 0 1 0 0
SPD Serial Poll Disable x 0 0 1 1 0 0 1
SPE Serial Poll Enable x 0 0 1 1 0 0 0
SRQ Service Request
TAG Talker Address Group x 1 0 a d d r n
TCT Take Control x 0 0 0 1 0 0 1
UNL Unlisten x 0 1 1 1 1 1 1
UNT Untalk x 1 0 1 1 1 1 1
(x = "don't care")