Use Commands; Types Of Commands; Device-Dependent Commands; Common Commands - Fluke 5502A Operator's Manual

Use Commands

Communications between the controller and the Calibrator is made of commands,
queries, and interface messages. Although the commands come from the 488.2 standard,
they can be used on the IEEE-488 or RS-232 interface, but for some specified RS-232
commands given in "Commands for RS-232 Only." (For more about command
structures, see the IEEE 488.2 standard.)
See Chapter 6, "Remote Commands" when more information about command references
used this chapter are necessary.
All commands and units can be recorded in UPPER or lower case.
There are four remote control configurations that use commands, queries and interface
messages: IEEE-488, RS-232 Terminal Mode, RS-232 Computer Mode, and RS-232
Pass-Through Mode. (set up and verify each mode is given in this chapter.)
IEEE-488 Mode The IEEE-488 mode is used when the Calibrator is operated by
computer program. In this mode, necessary information is shown by query, and interface
messages are queued and returned by command.
RS-232 Terminal Mode The RS-232 terminal mode is an interactive mode where an
operator inputs commands, with immediate indications for requested information
(queries) and interface messages.
RS-232 Computer Mode The RS-232 computer mode is used when the Calibrator is
operated by computer program. In this mode, requested information is shown by query,
and interface messages are queued and returned by command.
RS-232 Pass-Through Mode The RS-232 pass-through mode is used to move
commands from the PC to a UUT, but with the Calibrator. This configuration is used
when the UUT has an RS-232 port. Commands are sent to the UUT with the UUT_SEND
command, shows use the UUT_RECV? query, and UUT_FLUSH cleans the UUT receive
buffer in the Calibrator.

Types of Commands

The commands for the Calibrator can be grouped into one or more categories, depending
on how they operate. Each category is given below.

Device-Dependent Commands

Device-dependent commands are unique to the Calibrator. An example of a
device-dependent command is,
OUT 100 V, 1 A, 60 HZ
this tells the Calibrator to source 100 watts of ac power.

Common Commands

Common commands are specified by the IEEE 488.2 standard and are common to most
bus devices. Common commands always start with an * character. Common commands
are available is you use the IEEE-488 or RS-232 interface for remote control. An
example of a common command is,
*IDN?
this tells the Calibrator to give the instrument identification string.
5
Remote Operation

Use Commands

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