
Overview of Messages
The information that is exchanged between the controller (computer) and the device (PAT-T
series) is called a message.
The PAT-T uses the SCPI language for the messages.
There are two types of messages, commands that are sent from the computer to the PAT-T
and responses that are sent from the PAT-T to the computer.
Command hierarchy
SCPI commands are ASCII-based commands designed for test and measurement devices.
The command hierarchy is structured around the common root or node, which is the
construction block of the SCPI sub system. A command consists of a program header,
parameters, and punctuations.
The hierarchy is explained using the SOURce subsystem as an example.
Program header parameter Hierarchy of node
SOUR: Root node
CURR Secound level
[:PROT] Third level
[:LEV] <numeric> Forth level
:STAT <bool> Forth level
VOLT Secound level
[:PROT] Third level
[:LEV] <numeric> Forth level
:STAT <bool> Forth level
A higher node is separated from a lower node using a colon (:).
Command Syntax
This manual denotes SCPI commands using the following format.
[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]
{<current>|MINimum|MAXimum}
SCPI commands can be issued using the short form. The short form of a SCPI command is
the section of the command written in uppercase.
SCPI commands can be sent in the long form or short form. Since SCPI commands are not
case-sensitive, CURR, Curr, and curr are all accepted as the short form of CURRent. In the
long form, CURRENT, Current, and current are all acceptable.
•A space is required between the program header section and the parameter section.
•Multiple parameters, when available, are concatenated using commas.
•Commands are concatenated using semicolons (compound command).
SOURce:CURRent MINimum;VOLTage MINimum
In the second command, SOURce is omitted. This is because the path is set to SOURce by
the first command SOURce:CURRent MINimum.
This compound command is the same as entering the following commands.
SOURce:CURRent MINimum
SOURce:VOLTage MINimum
An error occurs if a node that is not defined in the current path is designated.
Commands of different subsystems can be concatenated using a colon and a semicolon
together.
SOURce:CURRent MINimum;:MEASure:CURRent?
This compound command contains two root nodes, SOURce and MEASure.
When the second or subsequent command starts with a colon, the path specified by the
Overview
Introduction
Setup
Installing the VISA library
Interface Setup
Overview of Messages
Command Syntax
Parameters
Default settings
Command
(function search)
IEEE488.2 Common Commands
Output Setting
Protection and Clear the Alarm
System Configuration
Preset Memory Function
Setting Changes using triggers
Output On/Off Delay
Measurement
System
Register
Command
(ABC search)
A C F I M
O S T V *
Command
(Sub-system search)
SOURce
OUTPut
MEASure and FETCh
TRIGger
MEMory/ SENSe
SYSTem
STATus
IEEE488.2 Common Command
List (PDF)
Appendix
A List of Errors
Processing time of main
command
Tutorial
Turning the Power On and
Resetting the Instrument
Output programming
Using Triggers
Status Monitoring
Error Checking
Visual Basic 2008
PAT-T series Communication Interface Manual
KIKUSUI ELECTRONICS CORP.