Remote Operation
7.3 Introduction to Programming
All commands and response messages are transferred in form of ASCII codes. The
response messages must be read completely before a new command is sent, otherwise the
remaining response messages will be lost, and a query interrupt error will occur.
7.3.1 Conventions
Angle brackets < > Items in angle brackets are parameter abbreviations.
Vertical bar | Vertical bar separates alternative parameters.
Square brackets [ ] Items in square brackets are optional. For example,
OUTP [ : STATe] means that : STATe may be omitted.
Braces { } Braces indicate the parameters that may be repeated.
The notation <A> {<, B>} means that parameter “A” must
be entered while parameter “B” may be omitted or entered
once or more times.
7.3.2 Numerical Data Formats
All data programmed to or returned from the AC source are ASCII. The data can be
numerical or character string.
Numerical Data Formats
It is a digit with no decimal point. The decimal is
assumed to be at the right of the least significant digit.
It is a digit with a decimal point.
It is a digit with a decimal point and an exponent.
7.3.3 Boolean Data Format
The Boolean parameter <Boolean> takes only the form ON|OFF.
7.3.4 Character Data Format
The character strings returned by query command may take either of the following forms:
<CRD> Character Response Data: character string with maximum length of 12.
<SRD> String Response Data: character string.
7.3.5 Basic Definition
Command Tree Table:
The commands of the AC source are based on a hierarchical structure, also known as a tree
system. In order to obtain a particular command, the full path to that command must be
specified. This path is represented in the table by placing the highest node in the farthest left
position of the hierarchy. Lower nodes in the hierarchy are indented in the position to the
right, below the parent node.
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