DIN 66025: Comprehensive Guide to NC Programming Codes

DIN stands for “Deutsches Institut für Normung”, meaning “German institute for standardisation”.

CNC related DIN standards

• DIN 66025-1 Numerical control of machines, format; general requirements
• DIN 66025-2 Industrial automation; numerical control of machines; format, preparatory and miscellaneous functions

Din 66025 NC Programming Codes

RS-274-D – A version of the G-code computer numerical control language, standardized by EIA.
Or
RS-274D is the standard for numerically controlled machines developed by the Electronic Industry Association

NC Programming as per ISO (DIN 66025) and RS274

Din 66025 G-Codes

• G00 Rapid traverse
• G01 Linear interpolation with feedrate
• G02 Circular interpolation (clockwise)
• G03 Circular interpolation (counter clockwise)
• G2/G3 Helical interpolation
• G04 Dwell time in milliseconds
• G05 Spline definition
• G06 Spline interpolation
• G07 Tangential circular interpolation / Helix interpolation / Polygon interpolation / Feedrate interpolation
• G08 Ramping function at block transition / Look ahead “off”
• G09 No ramping function at block transition / Look ahead “on”
• G10 Stop dynamic block preprocessing
• G11 Stop interpolation during block preprocessing
• G12 Circular interpolation (cw) with radius
• G13 Circular interpolation (ccw) with radius
• G14 Polar coordinate programming, absolute
• G15 Polar coordinate programming, relative
• G16 Definition of the pole point of the polar coordinate system
• G17 Selection of the X, Y plane
• G18 Selection of the Z, X plane
• G19 Selection of the Y, Z plane
• G20 Selection of a freely definable plane
• G21 Parallel axes “on”
• G22 Parallel axes “off”
• G24 Safe zone programming; lower limit values
• G25 Safe zone programming; upper limit values
• G26 Safe zone programming “off”
• G27 Safe zone programming “on”
• G33 Thread cutting with constant pitch
• G34 Thread cutting with dynamic pitch
• G35 Oscillation configuration
• G38 Mirror imaging “on”
• G39 Mirror imaging “off”
• G40 Path compensations “off”
• G41 Path compensation left of the work piece contour
• G42 Path compensation right of the work piece contour
• G43 Path compensation left of the work piece contour with altered approach
• G44 Path compensation right of the work piece contour with altered approach
• G50 Scaling
• G51 Part rotation; programming in degrees
• G52 Part rotation; programming in radians
• G53 Zero offset off
• G54 Zero offset #1
• G55 Zero offset #2
• G56 Zero offset #3
• G57 Zero offset #4
• G58 Zero offset #5
• G59 Zero offset #6
• G63 Feed / spindle override not active
• G66 Feed / spindle override active
• G70 Inch format active
• G71 Metric format active
• G72 Interpolation with precision stop “off”
• G73 Interpolation with precision stop “on”
• G74 Move to home position
• G75 Curvature function activation
• G76 Curvature acceleration limit
• G78 Normalcy function “on” (rotational axis orientation)
• G79 Normalcy function “off”
• G80 – G89 for milling applications:
• G80 Canned cycle “off”
• G81 Drilling to final depth canned cycle
• G82 Spot facing with dwell time canned cycle
• G83 Deep hole drilling canned cycle
• G84 Tapping or Thread cutting with balanced chuck canned cycle
• G85 Reaming canned cycle
• G86 Boring canned cycle
• G87 Reaming with measuring stop canned cycle
• G88 Boring with spindle stop canned cycle
• G89 Boring with intermediate stop canned cycle
• G81 – G88 for cylindrical grinding applications:
• G81 Reciprocation without plunge
• G82 Incremental face grinding
• G83 Incremental plunge grinding
• G84 Multi-pass face grinding
• G85 Multi-pass diameter grinding
• G86 Shoulder grinding
• G87 Shoulder grinding with face plunge
• G88 Shoulder grinding with diameter plunge
• G90 Absolute programming
• G91 Incremental programming
• G92 Position preset
• G93 Constant tool circumference velocity “on” (grinding wheel)
• G94 Feed in mm / min (or inch / min)
• G95 Feed per revolution (mm / rev or inch / rev)
• G96 Constant cutting speed “on”
• G97 Constant cutting speed “off”
• G98 Positioning axis signal to PLC
• G99 Axis offset
• G100 Polar transformation “off”
• G101 Polar transformation “on”
• G102 Cylinder barrel transformation “on”; cartesian coordinate system
• G103 Cylinder barrel transformation “on,” with real-time-radius compensation (RRC)
• G104 Cylinder barrel transformation with center line migration (CLM) and RRC
• G105 Polar transformation “on” with polar axis selections
• G106 Cylinder barrel transformation “on” polar-/cylinder-coordinates
• G107 Cylinder barrel transformation “on” polar-/cylinder-coordinates with RRC
• G108 Cylinder barrel transformation polar-/cylinder-coordinates with CLM and RRC
• G109 Axis transformation programming of the tool depth
• G110 Power control axis selection/channel 1
• G111 Power control pre-selection V1, F1, T1/channel 1 (Voltage, Frequency, Time)
• G112 Power control pre-selection V2, F2, T2/channel 1
• G113 Power control pre-selection V3, F3, T3/channel 1
• G114 Power control pre-selection T4/channel 1
• G115 Power control pre-selection T5/channel 1
• G116 Power control pre-selection T6/pulsing output
• G117 Power control pre-selection T7/pulsing output
• G120 Axis transformation; orientation changing of the linear interpolation rotary axis
• G121 Axis transformation; orientation change in a plane
• G125 Electronic gear box; plain teeth
• G126 Electronic gear box; helical gearing, axial
• G127 Electronic gear box; helical gearing, tangential
• G128 Electronic gear box; helical gearing, diagonal
• G130 Axis transformation; programming of the type of the orientation change
• G131 Axis transformation; programming of the type of the orientation change
• G132 Axis transformation; programming of the type of the orientation change
• G133 Zero lag thread cutting “on”
• G134 Zero lag thread cutting “off”
• G140 Axis transformation; orientation designation work piece fixed coordinates
• G141 Axis transformation; orientation designation active coordinates
• G160 ART activation
• G161 ART learning function for velocity factors “on”
• G162 ART learning function deactivation
• G163 ART learning function for acceleration factors
• G164 ART learning function for acceleration changing
• G165 Command filter “on”
• G166 Command filter “off”
• G170 Digital measuring signals; block transfer with hard stop
• G171 Digital measuring signals; block transfer without hard stop
• G172 Digital measuring signals; block transfer with smooth stop
• G175 SERCOS-identification number “write”
• G176 SERCOS-identification number “read”
• G180 Axis transformation “off”
• G181 Axis transformation “on” with not rotated coordinate system
• G182 Axis transformation “on” with rotated / displaced coordinate system
• G183 Axis transformation; definition of the coordinate system
• G184 Axis transformation; programming tool dimensions
• G186 Look ahead; corner acceleration; circle tolerance
• G188 Activation of the positioning axes
• G190 Diameter programming deactivation
• G191 Diameter programming “on” and display of the contact point
• G192 Diameter programming; only display contact point diameter
• G193 Diameter programming; only display contact point actual axes center point
• G200 Corner smoothing “off”
• G201 Corner smoothing “on” with defined radius
• G202 Corner smoothing “on” with defined corner tolerance
• G203 Corner smoothing with defined radius up to maximum tolerance
• G210 Power control axis selection/Channel 2
• G211 Power control pre-selection V1, F1, T1/Channel 2
• G212 Power control pre-selection V2, F2, T2/Channel 2
• G213 Power control pre-selection V3, F3, T3/Channel 2
• G214 Power control pre-selection T4/Channel 2
• G215 Power control pre-selection T5/Channel 2
• G216 Power control pre-selection T6/pulsing output/Channel 2
• G217 Power control pre-selection T7/pulsing output/Channel 2
• G220 Angled wheel transformation “off”
• G221 Angled wheel transformation “on”
• G222 Angled wheel transformation “on” but angled wheel moves before others
• G223 Angled wheel transformation “on” but angled wheel moves after others
• G265 Distance regulation – axis selection
• G270 Turning finishing cycle
• G271 Stock removal in turning
• G272 Stock removal in facing
• G274 Peck finishing cycle
• G275 Outer diameter / internal diameter turning cycle
• G276 Multiple pass threading cycle
• G310 Power control axes selection /channel 3
• G311 Power control pre-selection V1, F1, T1/channel 3
• G312 Power control pre-selection V2, F2, T2/channel 3
• G313 Power control pre-selection V3, F3, T3/channel 3
• G314 Power control pre-selection T4/channel 3
• G315 Power control pre-selection T5/channel 3
• G316 Power control pre-selection T6/pulsing output/Channel 3
• G317 Power control pre-selection T7/pulsing output/Channel 3

Note that some of the above G-codes are not standard. Specific control features, such as laser power control, enable those optional codes.

M codes

• M00 Unconditional stop
• M01 Conditional stop
• M02 End of program
• M03 Spindle clockwise
• M04 Spindle counterclockwise
• M05 Spindle stop
• M06 Tool change (see Note below)
• M19 Spindle orientation
• M20 Start oscillation (configured by G35)
• M21 End oscillation
• M30 End of program
• M40 Automatic spindle gear range selection
• M41 Spindle gear transmission step 1
• M42 Spindle gear transmission step 2
• M43 Spindle gear transmission step 3
• M44 Spindle gear transmission step 4
• M45 Spindle gear transmission step 5
• M46 Spindle gear transmission step 6
• M70 Spline definition, beginning and end curve 0
• M71 Spline definition, beginning tangential, end curve 0
• M72 Spline definition, beginning curve 0, end tangential
• M73 Spline definition, beginning and end tangential
• M80 Delete rest of distance using probe function, from axis measuring input
• M81 Drive On application block (resynchronize axis position via PLC signal during the block)
• M101-M108 Turn off fast output byte bit 1 (to 8)
• M109 Turn off all (8) bits in the fast output byte
• M111-M118 Turn on fast output byte bit 1 (to 8)
• M121-M128 Pulsate (on/off) fast output byte bit 1 (to 8)
• M140 Distance regulation “on” (configured by G265)
• M141 Distance regulation “off”
• M150 Delete rest of distance using probe function, for a probe input (one of 16, M151-M168)
• M151-M158 Digital input byte 1 bit 1 (to bit 8) is the active probe input
• M159 PLC cannot define the bit mask for the probe inputs
• M160 PLC can define the bit mask for the probe inputs (up to 16)
• M161-M168 Digital input byte 2 bit 1 (to bit 8) is the active probe input
• M170 Continue the block processing look ahead of the part program (cancel the M171)
• M171 Stop the block processing look ahead of the probe input part program segment (like a G10)
• M200 Activate the handwheel operation in the automatic mode (to introduce an offset in the program)
• M201-M208 Select the axis (by number from 1 to 8) for the handwheel operation
• M209 Activate the handwheel operation in the automatic mode, with PLC control of the axis selection
• M210 Deactivate the handwheel input while in the automatic mode
• M211 Deactivate this handwheel feature and also remove the handwheel offset (if any)
• M213 Spindle 2 clockwise
• M214 Spindle 2 counterclockwise
• M215 Spindle 2 stop
• M280 Switchable spindle/rotary axis, rotary axis on, first combination
• M281 Switchable spindle/rotary axis, rotary axis on, second combination
• M290 Switchable spindle/rotary axis, spindle enabled, first combination
• M291 Switchable spindle/rotary axis, spindle enabled, second combination

Note: Other machine functions, like tool change (usually M06) or coolant control, have their M-code value specified by the PLC application not by the CNC software. Most of the M-code values in above list are configurable.
Other M-codes (up to M699) can be handled by the PLC application based on the particular machine requirements.