KEPCO TMA 4882-27 - Manual (Page 35)

TMA 4882-27 021910
3-9
FIGURE 3-2. TREE DIAGRAM OF SCPI COMMANDS USED WITH TMA 4882-27 CONTROLLER
3.6.4 PROGRAM MESSAGE STRUCTURE
SCPI program messages consist of one or more message units ending with a terminator. The ter-
minator is not part of the syntax; it is defined by the way your programming language indicates
the end of a line. The message unit is a keyword consisting of a single command or query word
followed by a terminator (e.g., CURR?<newline> or TRIG<end-of-line>). The message unit may
include a data parameter after the keyword separated by a space; the parameter is usually
numeric (e.g., CURR 5<newline>), but may also be a string (e.g., OUTP ON<newline>). Figure
3-3 illustrates the message structure, showing how message units are combined. The following
subparagraphs explain each component of the message structure.
NOTE: An alternative to using the message structure for multiple messages defined in the fol-
lowing paragraphs is to send each command as a separate line. In this case each com-
mand must use the full syntax shown in Appendix B.
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?