2 common commands/queries, 3 scpi subsystem command/query structure, Common commands/queries -9 – KEPCO TMA VXI-27 User Manual

Page 26: Scpi subsystem command/query structure -9

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TMA VXI -27 101602

3-9

action; the controller may send a program message at any time. Response messages consist of
formatted data; the data can contain information regarding operating parameters, power supply
state, status, or error conditions.

3.5.2

COMMON COMMANDS/QUERIES

Common commands and queries are defined by the IEEE 488.2 standard to perform overall
power supply functions (such as identification, status, or synchronization) unrelated to specific
power supply operation (such as setting voltage/current). Common commands and queries are
preceded by an asterisk (*) and are defined and explained in APPENDIX A (see Table 3-3).
Refer also to syntax considerations (PAR.s 3.5.3 through 3.5.8).

3.5.3

SCPI SUBSYSTEM COMMAND/QUERY STRUCTURE

Subsystem commands/queries are related to specific power supply functions (such as setting
output voltage, current limit, etc.) Figure 3-4 is a tree diagram illustrating the structure of SCPI
subsystem commands used in the TMA VXI-27 with the “root” at the left side, and specific com-
mands forming the branches. The subsystem commands are defined and explained in Appendix
B (see Table 3-3).

FIGURE 3-4. TREE DIAGRAM OF SCPI COMMANDS USED WITH TMA VXI-27 CONTROLLER

INITiate

[:IMMediate]
:CONTinuous

INSTrument

:CATalog
:NSELect
:SELect
:STATe

MEASure

:CURRent?
:VOLTage?

OUTPut

[:STATe]

[SOURce:]

VOLTage

[:LEVel]

[:IMMediate]
:TRIGgered

CURRent

[:LEVel]

[:IMMediate]
:TRIGgered

FUNCtion

:MODE

ROOT : (colon)

STATus

:OPERation

:CONDition?
:ENABle
[:EVENt]?

:PRESet
:QUEStionable

:CONDition?
:ENABle
[:EVENt]?
:INSTrument?

:ENB
:ISUM

:INSTrument1?

:ENB

:INSTrument2?

:ENB

SYSTem

:COMMunication

:GPIB:ADDRess
:SERial

:BAUD
:ECHO
:PACE
:PROM

:ERRor?

:CODE?

:ALL?

:LANGuage
:SET
:VERSion?

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