The controller
recognizes twenty two 32-bit variables, A through V. These variables may be used
to receive, store and process numeric values. The range of the variables is from
-2147483647 through +2147483647.

W, X, Y, and Z store the value of step counters.
These values are read only and may not be written to.

logical and mathematical operations

The following
operation may be performed on any two values or variables.