History
First released in 1990, SCPI originated as an additional layer for IEEE-488. IEEE-488.1 specified the physical and electrical bus, and IEEE-488.2 specified protocol and data format, but neither specified instrument commands. Different manufacturers, and even different models, of the same type of instrument would use different command sets. SCPI created a standard which could be common across all manufacturers and models. It requires use of the IEEE-488.2 data formats, but does not mandate the IEEE-488.1 bus.
In 2002-2003, the SCPI Consortium voted to become part of the IVI Foundation (Interchangeable Virtual Instruments).
Read more about this topic: Standard Commands For Programmable Instruments
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