PMPA Craftsman Cribsheet #148: G-Code Macro Arithmetic Operators by Controller

A breakdown of G-code macro keyword functions across a range of major controllers. 

Published March 1, 2026

By David Wynn, Director of Technical Services & Industry Affairs

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Notes: Exact availability can vary by software version and options. Use [ … ] for expression grouping (order of operations), parentheses ( … ) are comments on most controls. Some controllers require arithmetic operations to be executed inside brackets [ ].