5
IEEE-488 Reference
5.1
Introduction ...................................................................................................................................................... 5-1
5.2
IEEE-488 bus connections ............................................................................................................................... 5-2
5.3
Primary address selection ............................................................................................................................... 5-4
5.4
Controller programming................................................................................................................................. 5-4
5.5
Front panel aspects of IEEE-488 operation................................................................................................... 5-5
5.5.1
Error and status messages ...................................................................................................................... 5-5
5.5.2
IEEE-488 status indicators....................................................................................................................... 5-5
5.5.3
LOCAL key ............................................................................................................................................... 5-5
5.6
Status structure ................................................................................................................................................. 5-5
5.6.1
Standard event status .............................................................................................................................. 5-7
5.6.2
Operation event status............................................................................................................................. 5-8
5.6.3
Arm event status .................................................................................................................................... 5-11
5.6.4
Sequence event status ............................................................................................................................ 5-13
5.6.5
Trigger event status ............................................................................................................................... 5-15
5.6.6
Questionable event status ..................................................................................................................... 5-18
5.6.7
Queues ..................................................................................................................................................... 5-18
5.6.8
Status byte and service request (SRQ)................................................................................................. 5-18
5.7
Trigger model (IEEE-488 operation)............................................................................................................. 5-21
5.8
General bus commands ................................................................................................................................. 5-26
5.8.1
REN (remote enable).............................................................................................................................. 5-26
5.8.2
IFC (interface clear)................................................................................................................................ 5-27
5.8.3
LLO (local lockout) ................................................................................................................................ 5-27
5.8.4
GTL (go to local) and local.................................................................................................................... 5-27
5.8.5
DCL (device clear).................................................................................................................................. 5-27
5.8.6
SDC (selective device clear) .................................................................................................................. 5-28
5.8.7
GET (group execute trigger) ................................................................................................................. 5-28
5.8.8
SPE, SPD (serial polling) ....................................................................................................................... 5-28
5.9
Programming syntax ...................................................................................................................................... 5-29
5.10
Common commands...................................................................................................................................... 5-37
5.10.1
*CLS
clear status ................................................................................................................................ 5-39
5.10.2
*ESE
event status enable .................................................................................................................. 5-40
5.10.3
*ESE?
event status enable query ..................................................................................................... 5-42
5.10.4
*ESR?
event status register query ................................................................................................... 5-43
5.10.5
*IDN?
identification query............................................................................................................... 5-45
5.10.6
*OPC
operation complete................................................................................................................. 5-46
5.10.7
*OPC?
operation complete query ................................................................................................... 5-48
5.10.8
*OPT?
option identification query.................................................................................................. 5-50
5.10.9
*RCL
recall.......................................................................................................................................... 5-51
5.10.10
*RST
reset............................................................................................................................................ 5-52
5.10.11
*SAV
save ........................................................................................................................................... 5-54
5.10.12
*SRE
service request enable ............................................................................................................. 5-55
5.10.13
*SRE?
service request enable query................................................................................................ 5-57
5.10.14
*STB?
status byte query .................................................................................................................... 5-58
5.10.15
*TRG
trigger ....................................................................................................................................... 5-60
5.10.16
*TST?
self-test query ......................................................................................................................... 5-61
5.10.17
*WAI
wait-to-continue ..................................................................................................................... 5-62
5.11
:DISPlay subsystem........................................................................................................................................ 5-67
5.12
:OUTPut subsystem ....................................................................................................................................... 5-73
5.13
[:ROUTe] subsystem ...................................................................................................................................... 5-75
5.13.1
:CLOSe <list> ........................................................................................................................................... 5-76
5.13.2
:OPEN <list>|ALL.................................................................................................................................. 5-78
5.13.3
:SCAN <list> ............................................................................................................................................ 5-79
iii
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