9.2. Programming Methods

There is a large selection of commands and interfaces that can be used to program the Accessory. A computer can communicate with Accessory using either USB, RS485, Ethernet, or GPIB. A programmable logic controller can control Accessory operation through analog IO and digital IO pins exposed on the rear connector.

The Accessory implements Standard Commands for Programmable Instrumentation (SCPI), a protocol that communicates using simple ASCII commands through a standard serial port. These commands are detailed in SCPI Command Set. Simple digital and analog interfaces to the product are detailed in Operation: External User I/O.