Hioki ST5540, Instruction Manual, Page: 153 / 326

8.4 Command Message Description
147
8
Chapter 8
Contro
lling the
Instru
ment From
a Comp
uter
Command
Syntax
The names of commands for the HiTESTER are as far as possible mne-
monic. Furthermore, all commands have a long form, and an abbreviated
short form.
In command references in this manual, the short form is written in upper
case letters, and then this is continued in lower case letters so as to con-
stitute the long form.
Either of these forms will be accepted during operation, but intermediate
forms will not be accepted. Further, during operation both lower case let-
ters and upper case letters will be accepted without distinction.
The response messages from the instrument are returned in long form and in
capital letters.
Headers
It is essential to prefix headers to program messages.
(1) Command program headers
There are three types of command : simple commands, compound com-
mands, and standard commands.
• Simple command header
This header is a sequence of letters and digits.
:HEADer
• Compound command header
This header is made up from a plurality of simple command type head-
ers marked off by colons "
:
"
:CONFigure:POLarity
• Standard command header
This header begins with an asterisk "
*
", and continues with a standard
command stipulated by IEEE 488.2.
*CLS
(2) Query program headers
These are for commands used for interrogating the instrument about the
results of operations, about measured values, or about the current states
of settings for the instrument. As shown by the following examples, they
can be recognized as queries by a question mark "
? " appearing after the
program header.
:MEASure?
:MEASure:MAXimum?
:NETWork
OK (long form)
:NETW
OK (short form)
:NETWO
Error
:NET
Error