Standard Commands for Programmable Instrumentation
- Standard Commands for Programmable Instrumentation
The Standard Commands for Programmable Instrumentation (SCPI) (often pronounced "skippy") defines a standard set of commands to control programmable test and measurement devices in instrumentation systems.
The SCPI Standard specifies a command structure and syntax for programmable instruments control. The physical communications link, such as GPIB (IEEE-488) , RS232, USB, VXIbus etc, is NOT defined by SCPI. SCPI also includes standard command sets for several classes of instruments, e.g. power supplies, loads, and measurement devices such as voltmeters and oscilloscopes. A predecessor of SCPI, but with more limited scope, was IEEE 488.2 in 1987.
SCPI commands are ASCII textual strings, which are sent to the instrument over the physical layer, such as GPIB.
Two examples: With the command "SYSTem:COMMunicate:SERial:BAUD 2400" the baudrate of an RS232 interface can be set to 2400 bit/s. With the command "SYSTem:COMMunicate:SERial:BAUD?" the current baudrate of an RS232 interface can be queried. Commands can be abbreviated to their upper case parts, for instance "SYST:COMM:SER:BAUD?".
Some instrument manufacturers, notably Agilent and Tektronix, have implemented SCPI on many new general purpose instruments.
References
* [http://www.scpiconsortium.org/scpiinfo2.htm The SCPI consortium]
* [http://www.scpiconsortium.org/SCPI-99.pdf The SCPI standard from 1999]
* [http://www.jpacsoft.com/scpi_explained.htm SCPI explanation from JPA consulting]
* [http://epccs.org/indexes/Software/PyWinGPIB/ Python GPIB to try some SCPI with]
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Standard Commands for Programmable Instrumentation — Standard Commands for Programmable Instruments Pour les articles homonymes, voir SCPI. Le Standard Commands for Programmable Instruments (SCPI) (généralement prononcé skippy ) définit un ensemble de commandes standards permettant de contrôler un… … Wikipédia en Français
Standard Commands for Programmable Instruments — Pour les articles homonymes, voir SCPI. Standard Commands for Programmable Instruments (SCPI) (littéralement « commandes standard pour les instruments programmables » généralement prononcé [skippy]) définit une norme de langage… … Wikipédia en Français
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