Introduction

This page gives detailed descriptions of the M-codes that you use to program your machine.

CAUTION: The sample programs in this manual have been tested for accuracy, but they are for illustrative purposes only. The programs do not define tools, offsets, or materials. They do not describe workholding or other fixturing. If you choose to run a sample program on your machine, do so in Graphics mode. Always follow safe machining practices when you run an unfamiliar program.

NOTE: The sample programs in this manual represent a very conservative programming style. The samples are intended to demonstrate safe and reliable programs, and they are not necessarily the fastest or most efficient way to operate a machine. The sample programs use G-codes that you might choose not to use in more efficient programs.

M-codes are miscellaneous machine commands that do not command axis motion. The format for an M-code is the letter M followed by two to three digits; for example M03. Only one M-code is allowed per line of code. All M-codes take effect at the end of the block.

Code  Description
M170 / M171 B-Axis Brake Engage / Disengage
M214 / M215 LT-Axis Brake Engage / Disengage
M219 Live Tool Orient
M373 / M374 Tool Air Blast On/Off
M388 / M389 Through-Spindle Coolant On/Off

Lathe - M-Codes

M- Code Description
M00 Stop Program
M01 Optional Stop Program
M02 Program End
M03 Spindle On Fwd
M04 Spindle On Rev
M05 Spindle Stop
M08 / M09 Coolant On / Off
M10 / M11 Chuck Clamp / Unclamp
M12 / M13 Auto Jet Air Blast On / Off (Optional)
M14 / M15 Main Spindle Brake On /Off (Optional C-Axis)
M17 Turret Rotation Fwd
M18 Turret Rotation Rev
M19 Orient Spindle (Optional)
M21 Tailstock Advance (Optional)
M22 Tailstock Retract (Optional)
M23 Chamfer Out of Thread On
M24 Chamfer Out of Thread Off
M30 End of Program and Reset
M31 Chip Auger Forward (Optional)
M33 Chip Auger Stop (Optional)
M35 Parts Catcher Part-Off Position
M36 Parts Catcher On (Optional)
M37 Parts Catcher Off (Optional)
M38 / M39 Spindle Speed Variation On / Off
M41 / M42 Low / High Gear (Optional)
M43 Turret Unlock (Service Use Only)
M44 Turret Lock (Service Use Only)
M51 - M56 Turn On Built-In M-Code Relay
M59 Turn On Output Relay
M61 - M66 M61 - M66 Turn Off Built-In M-Code Relay
M69 Turn Off Output Relay
M78 Alarm if Skip Signal Found
M79 Alarm if Skip Signal Not Found
M85 / M86 Automatic Door Open / Close (Optional)
M88 / M89 High Pressure Coolant On / Off (Optional)
M90 / M91 Fixture Clamp Input On / Off
M95 Sleep Mode
M96 Jump If No Signal
M97 Local Subprogram Call
M98 Subprogram Call
M99 Subprogram Return Or Loop
M104 / M105 Probe Arm Extend / Retract (Optional)
M109 Interactive User Input
M110 Secondary Spindle Chuck Clamp (Optional)
M111 Secondary Spindle Chuck Unclamp (Optional)
M112 / M113 Secondary Spindle Air Blast On / Off (Optional)
M114 / M115 Secondary Spindle Brake On / Off (Optional)
M119 Secondary Spindle Orient (Optional)
M121- M126 M121 - M126 Built-In M-Codes Relays with M-Fin
M129 Turn On M-Code Relay with M-Fin
M130 / M131 Display Media / Cancel Display Media
M133 Live Tool Fwd (Optional)
M134 Live Tool Rev (Optional)
M135 Live Tool Stop (Optional)
M138 Spindle Speed Variation On
M139 Spindle Speed Variation Off
M143 Secondary Spindle Forward (Optional)
M144 Secondary Spindle Reverse (Optional)
M145 Secondary Spindle Stop (Optional)
M146 / M147 Steady Rest Clamp / Unclamp (Optional)
M158 / M159 Mist Condenser On/Off
M170 / M171 Engage 4th Axis Brake / Release 4th Axis Brake
M214 / M215 Live Tool Brake On/Off
M219 Live Tool Orient (Optional)
M299 APL / Part Load / or Program End
M300 M300 - APL/Robot Custom Sequence
M334 / M335 P-Cool Increment / P-Cool Decrement
M373 / M374 Tool Air Blash (TAB) On/OFF
M388 / M389 Through-Spindle Coolant On / Off
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