Xantrex Technology XDC manual IEEE-488.2/SCPI Syntax and Style, Scpi Command Hierarchy

SCPI Command Reference

IEEE-488.2/SCPI Syntax and Style

IEEE-488.2/SCPI Syntax and Style

Parameters Units of Measure and Multipliers

Refer to IEEE 488.2, section 7.7.3 for the definition of units of measure.

The default units of measure include:

•V (Volt – voltage)

•A (Ampere – current)

•W (Watt – power)

•S (seconds – time)

The supported optional multipliers include:

•m (milli)

•k (kilo)

Note The SI standard for these multipliers is specifically lowercase, while the IEEE standard specifies uppercase. Both combinations are supported.

SCPI Command Hierarchy

SCPI is an ASCII-based command language designed for use in high-technology test and measurement equipment. The command structure is organized around common roots, or nodes, which are the building blocks of SCPI subsystems. An example of a common root is CALibration, and some of the commands that reside in the CALibration subsystem are shown below.

CALibration

:CURRent

[:DATA] <numeric value> :LEVel {MINMAX}

[:SECure]

:CODE <new code>

:STATe {OFFON}, <code> :STATe?

CALibration is the root keyword of the command. CURRent and SECure are second-level keywords, and DATA, LEVel, CODE, and STATe, are third-level keywords. A colon (:) is used to separate a command keyword from a lower-level keyword.

194 Operating Manual for XDC Series Power Supply