CNC Absolute vs Incremental Programming: G90 & G91 Explained with Real Code In CNC programming, G90 (absolute) and G91 (incremental) codes define how position commands are interpreted.A misunderstanding between these two can cause severe crashes or dimensional errors — even ...
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Category: G-Code & M-Code Reference
Explore the complete list of G-codes and M-codes used in CNC machining. Understand commands, syntax, and machine responses with real-world examples and explanations.
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CNC Tool Length & Diameter Offsets: G43, G44, H & D Explained with Real Code
cnccodeCNC Tool Length & Diameter Offsets: G43, G44, H & D Explained with Real Code Tool length and diameter offsets allow CNC machines to compensate for tool size, wear, and geometry directly in the control — eliminating the need to ...
CNC Program Stop, End & Restart M-Codes: M00, M01, M02, M30 Explained
cnccodeCNC Program Stop, End & Restart M-Codes: M00, M01, M02, M30 Explained Program control M-codes manage when a CNC program stops, ends, or restarts.They are essential for safe tool changes, inspections, and automated cycle control. 📌 1. M00 — Program ...
CNC Tool Change & ATC M-Codes: M06, M61, M00 with Real Examples
cnccodeCNC Tool Change & ATC M-Codes: M06, M61, M00 with Real Examples Tool changes are controlled by M-codes that command the automatic tool changer (ATC).Understanding these commands ensures safe, efficient, and fully automated CNC operation. 📌 1. Standard Tool Change ...
CNC Spindle & Coolant M-Codes: Complete Reference (M03, M04, M05, M07, M08, M09)
cnccodeCNC Spindle & Coolant M-Codes: Complete Reference (M03, M04, M05, M07, M08, M09) Spindle and coolant control is handled by M-codes.These are universal across most CNC controls (Fanuc, Haas, Siemens, Heidenhain), though with slight variations. 📌 1. Spindle Control M-Codes ...
CNC Modal vs. Non-Modal G-Codes: Avoiding Costly Programming Mistakes
cnccodeCNC Modal vs. Non-Modal G-Codes: Avoiding Costly Programming Mistakes One of the most common sources of CNC programming errors is misunderstanding the difference between modal and non-modal G-codes. This guide explains how modal groups work, why they matter, and how ...
CNC Coordinate Systems (G54–G59, G92, G52): Complete Work Offset Guide
cnccodeCNC Coordinate Systems (G54–G59, G92, G52): Complete Work Offset Guide Work coordinate systems (WCS) define where the CNC machine “zero point” is located for each setup. By using offsets like G54–G59, G92, and G52, you can run multiple parts, fixtures, ...
CNC Canned Cycles vs. Custom Macros: When to Use G-Code Shortcuts
cnccodeCNC Canned Cycles vs. Custom Macros: When to Use G-Code Shortcuts Canned cycles (G81–G89) and custom macros (M98, M99, variables) are two different ways to simplify repetitive CNC tasks. But when should you use a built-in canned cycle versus writing ...
CNC Safe Start & End Blocks: G-Code Templates for Reliable Programs
cnccodeCNC Safe Start & End Blocks: G-Code Templates for Reliable Programs Every CNC program should begin and end with safe, reliable blocks that reset modal conditions and ensure machine safety. This guide explains Safe Start Blocks and End Blocks, with ...
CNC Subprograms & Macros (M98, M99, Variables): Advanced Programming Techniques
cnccodeCNC Subprograms & Macros (M98, M99, Variables): Advanced Programming Techniques Subprograms and macros transform CNC programming from simple part machining into parametric, reusable, and automated processes. This guide covers M98 (call subprogram), M99 (return/loop), and variables (#100, #500, etc.) with ...