Response Messages; Response Data Types; Getting A Response Message; Multiple Response Messages - Keithley 2230G-30-3 User Manual

Series 2230G Triple-Channel Power Supplies User's Manual

Response messages

A response message is the message sent by the instrument to the computer in response to a query
command.

Response data types

Character strings returned by query statements may take any of the following formats, depending on
the length of the returned string.
Symbol
<CRD>
<AARD>
<SRD>

Getting a response message

After sending a query command, the response message is placed in the output queue. When the
Series 2230G is then addressed to talk, the response message is sent from the output queue to the
computer.

Multiple response messages

If you send more than one query command in the same program message (see
in a message
2230G is addressed to talk. The responses are separated with semicolons (;) and are sent in the
order that the query commands were sent. Items within the same query are separated by commas
(,).
The following example shows the response message for a program message that contains four
single-item query commands:
0; 1; 1; 0

Response message terminator (RMT)

Each response is terminated with an LF (line feed) and EOI (end or identify). The following example
shows how a multiple response message is terminated:
0; 1; 1; 0; <RMT>
2230G-900-01 Rev. A / June 2018
Description
Character response data; permits the return of character strings
Arbitrary ASCII response data; permits the return of undelimited 7-bit ASCII
This data type has an implied message terminator
String response data; returns string parameters enclosed in double quotes
(on page 4-6)), multiple response messages are sent to the computer when the Series
Section 4: Introduction to SCPI
Multiple commands
4-9