LST format

An LST (List) file is a text-based report that represents the NC program in an expanded, readable form. It helps programmers, operators, and reviewers understand what the NC code will do, without running it on the machine.

While a DIN ISO 6983 file contains the raw G-code instructions, an LST file includes additional information such as line numbers, tool changes, feed rates, and comments. LST files often display the toolpath in a more human-readable format, making it easier to verify the program’s logic and identify potential issues before execution.

LST files are commonly used for documentation, review, and troubleshooting purposes in CNC machining. They can be generated from the NC code using various CAM software or post-processors, and they serve as a valuable reference for machinists and engineers to ensure the accuracy and safety of the machining process.