description for m codes3

8/10/2019 Description for m Codes3

1/19

DESCRIPTION FOR M CODES:

M00 Program stop

Cycle operation is stopped after a block containing M00 is executed.

M01 Optional stop

Cycle operation is stopped after a block containing M01 is executed.

This code is only effective when the optional stop switch on the machine

control panel has been pressed. Example: M01

M02 End of program

M02 Halt program execution: The spindle speed is turned off and the

CNC program is terminated.

M03 Starts spindle

An M03 instruction starts forward spindle motion. It requires a speed

with in the range 100 to 3000 R.P.M

Example: M03 S2200

M04 Reverse Spindle

An M04 instruction starts reverse spindle motion. It requires a speedwith in the range of 100 to 3000 R.P.M

Eg: M04 S2200.


2/19

M05 Stop Spindle

An M05 instruction stops spindle.

M06 Tool Change

The M06 Instruction causes the Fanuc to change to different Tool.

The tool changing operation should be done in the home position only.

Eg: M06 T1.

M08 Coolant ON

M08 turns the Coolant on.

M09 Coolant OFF

M09 turns the Coolant OFF

M10/11 Work clamp open/close

M10 Opens the work clamp

M11 Closes the work clamp

M13 Coolant Spindle Forward

M13 turns the Coolant ON and starts Forward Spindle Motion.

Eg: M13 S1000.


3/19

M14 Coolant Spindle Reverse

M14 turns Coolant ON and starts a reverse Spindle Motion.

M25 Quill Extend

Extends the quill (tail stock)

M26 Quill Retract

Retracts the quill (tail stock)

M30 Program End & Rewind

Stops the spindle. Turns the coolant off. Terminates and resets the

CNC program. This command is used at the end of program to stop the

program and to bring the cursor to first line of program to repeat the

program once again.

M38/39 Door Open/Close

M38 Opens the door.

M39 Close the door.

Input /Output Commands for FMS

M62/65 Auxiliary output on.

M62 Sets Auxiliary output 1 on.

M63 Sets Auxiliary output 2 on.


4/19

M64 Sets Auxiliary output 1 off.

M65 Sets Auxiliary output 2 off.

COMMANDS DESCRIPTION

These commands are available in the machine side

The robot inputs can be switched on by sending the output signal

from machine side to robot side as a input signal.

M66/67 Waiting for Auxiliary Input 1/2 on

M66 Waiting for Auxiliary Input 1 on.

M67 Waiting for Auxiliary Input 2 on.

M76/77 Waits for Auxiliary 1/2 ON

M76 Waits for Auxiliary Input 1 to become off.

M77 Waits for Auxiliary Input 2 to become off.

Note: M66/67/77

These M codes are available in the machine side. The machine side

Inputs can be switched on by transferring the output signal from robot side

to machine side as an input signal.

The machine Inputs can be switched on by transferring the high

signal, which comes from the Robot side. The machine inputs can be

switched off by transferring the low signal, which comes from the robot

side.


5/19


6/19

G00 Rapid Traverse or fast Traverse

A G00 causes the tool to move to specified position at the maximum

speed.

Example: G00 X20 Z1

G02 Linear Interpolation or slow traverse

A G02 cause Linear Motion to the position at the last specified feed

rate from the current position. The feed rate for the linear motion should be

Example: G01 X20 Z1 F180

G02 Clockwise Circular Interpolation

A G02 causes a clockwise arc is cut. If the negative then the Longer

Arc is cut

Example: G02 X30 Z-20 R15 F80

GO3 Counter Clockwise Circular Interpolation

G03 causes counter clockwise circular motion

G04 Dwell

A Dwell of up to 500 seconds can be programmed.

Example: G04 X10


7/19

This causes a delay in machine of 10 seconds. This can be used for

drilling cycle.

Example: G04 P1500

This causes a delay in machine of 1500 milliseconds.

G20 Imperial Units

All future instruction parameters will be taken as imperial values. That

is, they will specify inches.

G21 Metric Units

All future instruction parameters will be taken as metric valuse.That is

they will specify millimeters. By default metric units will be taken for part

programming.

G28 Go to Reference Point

A G28 causes a fast traverse to the specified position and then

machine datum.

Example: G28 U0 W0

G40 Cancel Tool Radius Compensation

G40 Switched off any tool radius compensation activated by a G41

OR G42.

G41 Compensation Right


8/19

G41 enable tool nose radius compensation to the right of the

programmed path.

G42 Compensation Left

G42 enable tool nose radius compensation to the left of the

programmed path.

G50 Co-Ordinate Setting

G50 has two uses.

A co-ordinate setting block has X,Z,Uor W upon it.

A maximum spindle speed block dose not.

G50 Clamp Spindle

G50 sets the maximum spindle speed for constant surface speed

control.An X, Z, U or Wprefix must not be on the same block will be

interpreted as a coordinate setting block.

Example: G50 S2000

G50 creates a new coordinate system in which the tools current

position is set to the specified coordinates. The new coordinates can be in

absolute or incremental form.

Example: G50 X0 Z0 and G50 U-40

G70 Finishing cycle


9/19

A G70 causes a range of blocks to be executed, then the control

passes to the block after the G70.This will be used after the completion of

the roughing cycle.

The P and Q values specify the N block numbers at the start and end ofthe profile.

Example: G70 P20 Q50

P-First block of the cycle

Q-Last block the cycle

G71 Multiple Turning Cycle

A G71 causes a range of blocks to be executed for turning operation.

G71 U R

G71 P Q U W F

G71 U R

U -depth of cut in mm

R -radial tool retraction in mm

G71 P Q U W F

P -starting block number

Q -end block number

U -finishing allowance in X direction in mm

W -finishing allowance in Z direction in mm


10/19

F -feed rate

G72 Multiple Facing Cycle

A G72 causes a range of blocks to be executed for facing operation.

G72 W R

G72 P Q U W F

G72 W R

W -depth of cut in mm

R -radial tool retraction in mm

G72 P Q U W F


Q -end block number



F -feed rate

G73 Pattern Repeating Cycle

A G73 causes a range of blocks to be executed for turning operation.

G73 U W R

G73 P Q U W F


11/19

G73 U W R

U -difference in radius in mm

W -axial relief amount, which is zero for turning

R -total number of passes to be executed

G73 P Q U W F


Q -end block number



F -feed rate

G74 End Face Pack Drilling Cycle

A G74 is drilling cycle with in-built pecking action. After every peck of

the specified amount the tool will he retracted to the specified amount.

G74 R

G74 X Z P Q F

G74 R

R -radial retraction of the tool in mm

G74 X Z P Q F

X -center of the hole, always zero


12/19

Z -total depth of the hole in mm

Q -depth of cut for each peck in microns

F -feed rate

G75 Grooving Cycle

This cycle is used to make an axisymmetric groove of desired depth

and thickness using grooving tool.

G75 R

G75 X Z P Q F

G75 R

R -radial retraction of the tool in mm

G75 X Z P Q F

X - target point, lower left corner of the groove

Z - target point, lower left corner of the grove

P - depth of cut in X direction for each peck in micron

Q - axial shift of the tool in Z direction in microns when the groove

width is more than the tool width

G76 Multiple Threading Cycle

This cycle performs the multiple thread cutting operation in one call

G76 P Q R


13/19

G76 X Z P Q F

G76 P Q R

P - the first two digit - number of finishing cycles

Next two digit - tool pull out angle, normally 15

Q - maximum depth of cut at start in microns

R - finishing allowance in mm

Ex: G76 P031560 Q150 R0.15

G76 X Z R P Q F

X - minor diameter of the thread in mm

Z - length of the thread in mm

R - must be zero

P - height of the thread in microns

Q - minimum depth of cut in microns

F - lead of the thread in mm (lead = pitch; for single start thread)

G90 Turning Cycle

A G90 is the diameter cutting cycle. It is the equivalent of

Rapid to X position

Feed to Z position

Feed to start Z position


14/19


If an R value is specified tapering will be performed. The initial

rapid move will be to the position plus the R value (Ratio)

Examples: G90 U-4.0 W-40

G90 X 20 Z-8.0

G92 Threading Cycle

G92 performs one threading pass.

The position specified is that of the end of the thread.

The F value specifies the pitch, NOT the feed.

Example: G92 U-0.25 W-20 f1.5

G94 Box Facing Cycle

A G94 is an end face cutting cycle.

It is the equivalent of

Rapid to Z position

Feed to X position


Rapid to start X position

If an R value is specified tapering will be performed. The initial

rapid move will be to the Z position plus R value.

Example: G94 U-4.0 W-2.0 R-8.0 F140


15/19


16/19

The billet definition should be placed at the start of the program, after the

measure has optionally been set.

Example: G21

Sets the measure to metric

[BILLET X30.0 Z50.0

Defines the billet as 50mm long with a diameter of 30mm.

Subprogram directive

This directive allows a program with a non-numeric name to be called as asubprogram.

Example: [subprogram 2222

M987 P0012222

Clear Directive

This directive clears the tutorial message windows.

Example: [CLEAR

Step Directive

This directive switches over to single step execution on-screen and

when linked to the Fanuc machine.

Single step off Directive


17/19

This directive switches off single step execution on-screen and when

linked to the Fanuc machine.

Example : [NOSTEP

Show Directive

This directive allows the operations to be simulated.

Example : [SHOW

Enable simulation

This directive allows the operations to be simulated.

Example : [SHOW

Disable simulation

This directive stops the operations being simulated.

Example: [NOSHOW

Tutorial Message

Tutorial message instructions being with the ! Exclamation mark

which is followed by some text.

When the CNC program is executed your text will appear in the

Tutorial window at the bottom of the screen.

Example: ! Using tool 2


18/19

Tutorial pause.

Tutorial pause instructions begin with ? question mark which is followed

by some text.

When the CNC program is executed your text will appear in the Tutorial

window at the bottom of the screen. You will then be prompted to press a

key to continue.

Example: ? Check the position directive

There are a selection of Directives used within the CNC program for

controlling the simulation and the manual control select one of them fromthe menu for more information.

Comments

Use the (as the first character to specify a comment)

Tutorials

Interactive lessons can be developed through the Tutorials facility,

messages and questions can be embedded within the CNC program.

! Displays message without stopping

? Displays message but stops for key press.

**********


19/19

description for m codes3

Documents