Section 10: Instrument programming Series 3700A System Switch/Multimeter Reference Manual
10-16 3700AS-901-01 Rev. D/June 2018
Function and variable name restrictions
You cannot use Lua reserved words and top-level command names for function or variable names.
You cannot use the following Lua reserved words for function or variable names.
You also cannot use top-level command names as variable names. If you use these names, it will
result in the loss of use of the commands. For example, if you send the command digio = 5, you
cannot access the digio.* commands until you turn the instrument power off and then turn it on
again. These groups include:
Values and variable types
In Lua, you use variables to store values in the run-time environment for later use.
Lua is a dynamically-typed language; the type of the variable is determined by the value that is
assigned to the variable.
Variables in Lua are assumed to be global unless they are explicitly declared to be local. A global
variable is accessible by all commands. Global variables do not exist until they have been assigned a
value.
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