4
Command Syntax
General Syntax Rules
1. Separate parameters with commas.
2. Numeric parameters up to 15 significant digits
and exponents in the range ±1.0E ± 20.
3. Null parameters cause an error, e.g., the
adjacent commas in OUT 1V, ,2A.
4. Expressions, for example 4 + 2 ∗ 13, are not
allowed as parameters.
5. Binary Block Data can be in one of two IEEE
488.2 formats:
Indefinite Length Format Accepts data bytes
after #0 until the ASCII Line Feed character is
received with an EOI signal (for RS-232, a line
feed or carriage return will terminate the block).
Definite Length Format The data bytes are
preceded by #n and an n-digit number, which
identifies how many data bytes follow.
6. One space after a command is required. You
can insert extra spaces or tabs between
commands and arguments.
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