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Chapter 3 Programming Your Universal Counter for Remote Operation
Using Multiple Commands
3-14 Programming Guide
Using Multiple Commands
Program Messages
Program Messages are a combination of one or more properly formatted SCPI
Commands. Program messages always go from a computer to the Counter. They
are sent to the Counter over the Counter’s HP-IB as a sequence of ASCII data
messages.
Program Message Syntax
Figure 3-4 shows the simplified syntax of a program message. You can see
Common Commands and Subsystem Commands in the same program message. If
you send more than one command in one message, you must separate adjacent
commands with a semicolon.
NOTE:
<new line> = ASCII character decimal 10
^END = EOI asserted concurrent with last byte
Figure 3-4. Simplified Program Message Syntax Diagram
When using IEEE 488.2 Common commands with SCPI Subsystem commands on
the same line, use a semicolon between adjacent commands. For example:
*RST;:INP:COUP AC
When multiple subsystem commands are sent in one program message, the first
command is always referenced to the root node. Subsequent commands, separated
by “;”, are referenced to the same level as the preceding command if no “:” is
present immediately after the command separator (the semicolon).