Syntax
3–24
VX1410 IntelliFrame Instruction Manual
In accordance with IEEE 488.2 and the VXIbus specification, the VX1410
IntelliFrame accepts any of the following message terminators:
H
LF^END
Linefeed code (hexadecimal 0A) with the END bit in the
Byte Available command asserted.
H
LF
Linefeed code
H
<dab>^END
Last data byte with the END bit in the Byte Available
command asserted.
A semicolon separates one command from another when the commands appear
on the same line. See Entering Commands.
Entering Commands
The standards that govern the command set for the VX1410 IntelliFrame allows
for a certain amount of flexibility when you enter command. For example, you
can abbreviate many commands or combine commands into one message that
you send to the mainframe. This flexibility, called “friendly listening,” saves
programming time and makes the command set easier to remember and use.
The mainframe is not sensitive to the case of command characters. You can enter
commands in either upper or lower case.
You can precede any command with white space characters. White space
characters include a space or any combination of the ASCII control characters
hexadecimal 00 through 1F except for the character 0A (new line). You must,
however, use at least one space between the parameter and the command header.
Most commands have a long form and a short form. The listing for each
command in this section shows the abbreviations in upper case. For example,
you can enter the query
simply as
(or
).
The brackets around a mnemonic indicate that the mainframe assumes this level
of the command header by default. It is not necessary, therefore, for this
mnemonic to appear as part of the header when you send the command. For
example, you can abbreviate the command
to
Because the mainframe assumes that a command at the beginning of a program
message starts from the root, you have the option of beginning the initial
command header with a colon (:).
Message Terminator and
Message Separator
Command Characters
Abbreviating Commands
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