The IEEE-488 interface is based on the IEEE Standards 488.1 and
488.2. For detailed information, refer to the IEEE-488.1 and IEEE-
488.2 standards.
9.6 Using Commands
Communications between the controller and the CL3001 consist of
commands, queries, and interface messages. Although the
commands are based on the 488.2 standard, they can be used on
either the IEEE-488 or RS-232 interface, except for a few specific RS-
232 only commands as described in the subsection Commands for
RS-232 Only below.
For more detailed information on IEEE command structures, see the
IEEE 488.2 standard.
Refer to section 10 for more detailed information about the
commands referenced in this section.
All commands, units, and text data may be entered in UPPER or
lower case letters. The CL3001 converts all lower case letters to
upper case before processing.
9.6.1 Types of Commands
The commands for the CL3001 can be grouped into the following
categories based on how they function.
a)
Device-Dependent Commands
Device-dependent commands are unique to the CL3001.
An example of a device-dependent command is:
OUT 1 V
This command instructs the CL3001 to source 1 volt DC.
b)
Common Commands
Common commands are defined by the IEEE 488.2
standard and are common to most bus devices. Common
commands always begin with an asterisk (*) character.
Common commands are available whether you are using
the IEEE-488 or RS-232 interface for remote control. An
example of a common command is:
*IDN?
This command instructs the CL3001 to return the
instrument identification string.
c)
Query Commands
Query commands request information, which may be
returned as the command executes, or may be placed in a
buffer until requested later. Query commands always end
with a question mark. An example of a query commands is:
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