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Chitu G code Explained

        Once again Scott Here to see if I can’t help you understand the something else I have seen questions about in the 3D printing community.  This Time around I’ll go over the G-code used By Chitu on their F mini control board and other custom made control boards used by Tronxy and several other companies now. This control board comes on the Tronxy X5SA, X5ST, X5S-E2, XY-3 and XY-2 to name a few.
 
PLEASE NOTE CHANGING THESE SETTING WILL change your printers behavior. Therefore I do not recommend changing settings yourself without understanding what each setting your adjusting does.

                So To start with G code files can not be written in word you are better off writing then in notepad because it does not leave artifacts in the background. Therefore any time you want to update the firmware you need to either edit the g code you have or start a new notepad document for it.

                I am going to do my best to explain each of the G codes in every day terms If I can think of how. Then if you want you can copy each line into a notepad document and edit and save it. Once saved to the SD card put the SD card into the control board and run that G code file as if it was a print and done. Make sure ever g code file you make has the save g code at the end.

                Please not that this is the first G code I have seen that is like this “ M8012 I200” in this case the M8012 is the code then “ I”  is the actual settings your adjusting  so in the above example it is 200.  The this example M8012 is the code for X Y max movement speed then the 200 is the mms. So if you wanted to slow down the max speed you could change it to 120 or 300 to speed it up depending on your printer.

 

Resume on power Lose

                M8000 I1  ; used if you have the resume on power lose module installed

                M8000 I0 ;   used if you do not have the resume on power lose module installed

Stepper Motor Direction

    X stepper motor

M8002 I-1 ;  current direction

M8002 I1 ;  Reverse direction

    Y stepper motor

M8003 I-1 ;  current direction

M8003 I1 ;  Reverse direction

    Z stepper motor

M8004 I-1 ;  current direction

M8004 I1 ;  Reverse direction

    E stepper motor

M8005 I-1 ;  current direction

M8005 I1 ;  Reverse direction

Movement configuration

    X axis Movement

M8005 X0 ; print head moves in X axis

M8005 X1 ; Bed moves in X axis

    Y axis Movement

M8005 Y0 ; print head moves in X axis

M8005 Y1 ; Bed moves in X axis

    Z axis Movement

M8005 Z0 ; print head moves in X axis

M8005 Z1 ; Bed moves in X axis

Speed settings:

speed is in mm/s; acceleration is in mm/ s^2 start speed. When the moving speed exceeds this speed, it takes this speed as the starting speed and begins to accelerate.Otherwise, it is in constant motion at the moving speed

            M8006 I120

JERK

            M8007 I10 ; Lower this is your getting ringing

ACCLELERATION

Acceleration, the larger the value is, the greater the actual average moving speed is.

            M8008 I1000

Axis Steps Per Millimeter

example, 1.8 degree stepper motor, pulley with 20 teeth, tooth pitch is 2.032mm, 1/16 microstepping are (20*2.032)/((360/1.8)*16)

            Set X and Y the same

M8009 S0.0125 ; adjust the 0.0125  to correct both at once

    independent X,Y stepper motor parameters

M8009 X0.0127 Y0.0127

    Z axis

    value of each step of Z. The calculation formula: lead /((360/1.8)*16),

M8010 S0.0025

    Extruder Calibration

    value of each step of E. This value is equal to the 1/3200 circumference of extruder gear. In addition

M8011 S0.010799

Max Movement / print speed

XY movement mm/s

M8012 I200

Z movement mm/s

M8013 I30

extruder mm/s

M8014 I120

Home Speed settings

    first home speed

Z-axis  

M8015 I8

X-axis and Y-axis

M8015 S30

    second home speed

 Z-axis returns

M8016 I4

X-axis and Y-axis

M8016 S5

Pre-extrusion before print

    Pre- extruded

M8017 I10

    max speed of pre-extrusion(mm/s)

     Feeding by non-reduction gear, max speed always above 100.

M8018 I20

E max speed

Not sure why this one is here because M8014 does the same thing

            M8019 I50

Retract

    Distance

M8020 S1.5 ; will set the retract to 1.5mm no matter what the slicer says
M8020 S0 ; Follows slicer retract settings

   Speed

M8033 S8 ;  will set retract speed to 8mms

M8033 S0 ; Follows slicer retract speed settings

Filament Diameter

            M8021 S1.75

Max hotend temperature

            M8022 I260

Min Hotend Temperature for extruder to turn on

            M8022 T170

Maximum temperature of hot bed

            M8023 I120

Temperature error detection

            M8023 T0 ; Enable temperature error detection

            M8023 T1 ; Forbidding temperature error detection 

Maximum distance of X, Y, Z,

exceeding the distance will cause the buzzer to buzz

     X

M8024 I330

    Y

M8025 I330

    Z

M8026 I439

number of extrusion head Or use of second E stepper driver If the second driver chip set is there. (tronxy E2 versions only)  
             Set the number of extrusion headat least 1, at most 3 at present


             M8027 I1

            Whether it is 3 in 1 out nozzle or 2 in 1 out nozzle, these two nozzles share a temperature sensor, share a heating rod
            0: not 3/2 in 1 out nozzle       1: 3/2 in 1 out nozzle
            

            M8027 S0 

        The second extrusion head will be used as Z. For some large equipment, two Z axes will be needed. Therefore E2 can be used as Z axis. 
            This order will force the number of extrusion heads to be 1      0: double Z double limit mode, the second limit connect to X+,
            1£ºdouble Z single limit mode, only connect to one limit switch . if to enable this function, place a tick in front of the command.

            M8027 Z0
        the second extrusion head will be used as Y
            if to enable this function, place a tick in front of the command.


            M8027 Y0

       The second extrusion head is used as the first one, because some machines use two motors to feed the wire
            If you need to enable this feature, place a tick in front of the command


            M8027 E0

Heated Bed

            M8027 T1 ; enable hot bed

            M8027 T1 ; disable hot bed

Advanced Settings

    Extra pri after retract

M8028 S0.00 ; Add to the 0.00 to add extra length on the prime length after retract.

    Home location

            M8029 I0 ; front left

M8029 I1 ; Unilateral maximum point limit

M8029 I2 ; Bilateral limit

            M8029 I3 ; Limit in the left rear of the machine

types for limit switch

            M8029 T0 , limit switch normally open, when not triggered, the signal level is open

            M8029 T1:XYZ limit switch normally closed, when not triggered, the signal level is closed

Filament out Detection

Uses same plus as auto bed level sensor

            M8029 D0 ; ban fault detection

            M8029 D1 ; enabled fault detection

Limit switch type for filament out detection

            M8029 P1 ; same with XYZ limit type

            M8029 P-1 ;  opposite to XYZ limit type

part cooling Fan

M8030 I0 ; fan is controlled by slicing software
M8030 Ixxx ; setting a temperature that is larger than 0 fan controlled by firmware

Coldend Fan

            M8030 I0 ; full speed from powering on control board

            M8030 I50 T-1 ; allows you to set what speed and temp the coldend fan comes on at

SD card displayed on screen

            M8034 I1 ; Yes

            M8034 I0 ; No

Auto level point setup

The maximum is 5 as regard to leveling setting, X, Y are floating number, if X, Y are small than 1, then it indicates the corresponding proportion of journey. Otherwise, it indicates the absolute coordinates of X and Y, the unit is mm.

            M8035  I3 ; the number of instruction is same with that of point

            M8036  X-20 Y0 ;  start point

            M8036  X50 Y50 ; second point

            M8036  X250 Y250 , Third point

            M8036 X£» ; ends auto level

Machine type

            M8080 I0 ; Cartesian

            M8080 I2 ; Corexy

Thermistor type

            M8081 I0 ; Ideal NTC 100K 1% 3950 B

            M8081 I2 ; corresponding to the type 2 sensor of marlin

Auto leveling setting

            M8083 I0 ; ban auto leveling

            M8083 I1;  enable auto leveling (leveling switch connect Z)

Z Height Offset(TORONXY HAS THE ONSCREEN)

I skipped this because Tronxy has it onscreen. Height difference of Z leveling limit = Z zero position-Z position for leveling limit.    0: forbid deviation, the route of Z is determined by¡°set Z as zero¡±,the printed

G code doesn’t need the automatic high leveling order. It's recommended to use this mode.   Non 0:Z is automatically determined when the leveling limit is triggered. Under this mode,

G29 automatic leveling order must be after the return to zero of G28 and before begin print. If the extrusion head is near to main board during limitation, the value is positive.

            M8084 Z4

Boot Screen

The minimum is 100ms,the maximum is 6000ms

            M8085 I500

standby mode to shutdown

 This function can only be used for the equipment installed with the power module.  The unit is second(s). When the value is 0, it indicates forbidding the function of shutdown after standby.

            M8085 P0

Max Fan speed

Max 256 with more noise, which can be adjusted through this parameter

            M8489 I256

Disable steppers  and turn off all heating after printing

            M8489 P0 ; Turn off all

            M8489 P1 ; G Code Controlled        

PID
I have not used these one will more than likely be hotend the other the bed

            M301 P22.2 I1.08 D114 ; enables PID

            M303 E0 S150 C5; enables PID

Laser Engraver

            M8520 I0 ; do not support the laser engraving

            M8520 I1 ; support laser engraving, there are more buttons inside to set speed

Wifi Setup

    Replace the  word networkname with your network's name leaving the quotation marks, Replace the word Password with your networks     password leaving quotation marks.

           M9005 '"Networkname","Password"'

SAVE

MUST DO THIS IN EVER G CODE SET YOU SEND THE PRINTER

            M8500




below is an example of a Gcode I personally used to do basic update to the X5SA. 


;Speed settings: speed is in mm/s; acceleration is in mm/ s^2 
;start speed.When the moving speed exceeds this speed, it takes this speed as the starting speed and begins to accelerate.
;Otherwise, it is in constant motion at the moving speed c3d
M8006 I120
; ==================================
;
;JERK
;
;maximum speed while turning a corner. There there will be a large number of reciprocating motion while filling.
;The noise is loud while this value is large. When the value is small, the speed is slow c3d
M8007 I10
; ==================================
;ACCLELERATION
;
;acceleration, the larger the value is, the greater the actual average moving speed is.
;However, the noise is loud. The actual speed is small when the value is small c3d
M8008 I3000
; ==================================
;MAX MOVEMENT / PRINT SPEED.
;
;maximum speed of various parameters. In order to ensure the stabilization of the machine, 
;please make settings according to the measured results
;maximum speed of XY movement mm/s
M8012 I200
; ==================================
;maximum speed of Z movement mm/s
M8013 I30
; ==================================
;maximum speed of the extruder mm/s
M8014 I120
; ==================================
;Z-axis home speed.When using makerware software,the home speed will be ignored while slicing,
;because gcode specified the home speed
;first home speed when Z-axis returns to zero, higher
M8015 I8
; ==================================
;first home speed when X-axis and Y-axis returns to zero, higher
M8015 S30
; ==================================
;second home speed when Z-axis returns to zero, slower
M8016 I4
; ==================================
;second home speed when X-axis and Y-axis returns to zero, slower
M8016 S5
; ==================================
;Thermal Protection.
;
; Tronxy Has this turned off
;Forbidding temperature error detection. The default temperature error detection will pop up the warning when the temperature 
;sensor is not well plugged in or the heating power is too small. Strongly suggest not forbidding this function
;1: Forbidding temperature error detection                  0: Enable temperature error detection
M8023 T0
; ==================================
;MAX TRAVEL (adjusted because I have bed lowering installed).
;
;maximum distance of Z
M8026 I439
; ==================================
;the duration of the boot screen,the minimum is 100ms,the maximum is 6000ms c3d
M8085 I500
; ==================================
M117 PRINTER NOW CUSTOMIZED
;SAVE
;
;¡¾Save command¡¿ This parameter must not be less, otherwise all parameters can not be saved to the device
;save the configuration
M8500

 

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Comments 93

Pavel Fedotov on Tuesday, 17 March 2020 19:57

Hello! You have a good site. Thanks to you, I was able to understand the commands and settings of my X5SA. It prints, however, much slower than the mechanics of CoreXY could allow. My printer could not work with an acceleration greater than 250. It overloads when I try to print at a higher acceleration .... But I will tolerate this. Perhaps you know how to implement the "Linear advance" function? I was tormented by the curve print of the corners and the influx at the seams of the ring .....

Hello! You have a good site. Thanks to you, I was able to understand the commands and settings of my X5SA. It prints, however, much slower than the mechanics of CoreXY could allow. My printer could not work with an acceleration greater than 250. It overloads when I try to print at a higher acceleration .... But I will tolerate this. Perhaps you know how to implement the "Linear advance" function? I was tormented by the curve print of the corners and the influx at the seams of the ring .....
Scott Worthington on Tuesday, 17 March 2020 21:06

Sorry there is no linear advance in chitu. It sounds like you have one of the newer control boards and I have been hearing issues with them printing fast but chitu and tronxy both have not given me any updated gcode list to see what has changed.

Sorry there is no linear advance in chitu. It sounds like you have one of the newer control boards and I have been hearing issues with them printing fast but chitu and tronxy both have not given me any updated gcode list to see what has changed.
Pavel Fedotov on Tuesday, 17 March 2020 21:10

In your opinion, is it possible to fix the problem with blurry angles in some other way? I tried to change the speed dol very low, but the problem remains. The printer cannot smoothly reduce the pressure of molten plastic with a decrease in speed. I think this is the reason. But how to win?

In your opinion, is it possible to fix the problem with blurry angles in some other way? I tried to change the speed dol very low, but the problem remains. The printer cannot smoothly reduce the pressure of molten plastic with a decrease in speed. I think this is the reason. But how to win?
Scott Worthington on Tuesday, 17 March 2020 21:18

Your slicer should have coasting and other options to handle this as well I have no problem printing at 150mms

Your slicer should have coasting and other options to handle this as well I have no problem printing at 150mms
Pavel Fedotov on Tuesday, 17 March 2020 21:23

Tomorrow I will show you the print photo and my settings. You might see my mistake. In general, I am inclined to think that I need to change the main board to another one that supports marlin on this printer. Now my old ANET A8 has great speed and accuracy of printing. Do you have experience in such a rework?

Tomorrow I will show you the print photo and my settings. You might see my mistake. In general, I am inclined to think that I need to change the main board to another one that supports marlin on this printer. Now my old ANET A8 has great speed and accuracy of printing. Do you have experience in such a rework?
Pavel Fedotov on Monday, 23 March 2020 21:27

Hello! finally, I was able to get out of work and go online ... Perhaps you can help with advice on how to get rid of such defects at the corners of the model?
I hope I correctly added the photo

Hello! finally, I was able to get out of work and go online ... Perhaps you can help with advice on how to get rid of such defects at the corners of the model?[url=https://photos.app.goo.gl/BAHjyhVs3wC3CTM96][/url] I hope I correctly added the photo
Pavel Fedotov on Monday, 23 March 2020 21:29
[img]https://photos.app.goo.gl/dsyUATYCUtdGcf1H6[/img]
Guest - Drew D Smith on Monday, 06 April 2020 16:37

Just found this site, thanks for putting this together.

I've been trying to get it to work with my TronXY X5SA Pro, and while I think I have it sorted out now, I was driving myself crazy because after each "reflash" of the settings, I would try to home the machine and it would just crash into the home switches.

Turns out you have to power down and restart the machine for the settings to fully take effect.

Thanks again! -Drew

Just found this site, thanks for putting this together. I've been trying to get it to work with my TronXY X5SA Pro, and while I think I have it sorted out now, I was driving myself crazy because after each "reflash" of the settings, I would try to home the machine and it would just crash into the home switches. Turns out you have to power down and restart the machine for the settings to fully take effect. Thanks again! -Drew
Guest - Yury on Monday, 27 April 2020 09:12

Hello good people! I have a question! I dug up the entire forum topic and didn't find an answer! Who has encountered the port configuration for ESP-01S? What command should I use to enable the port? Tell me who faced please! Thank you in advance!

Hello good people! I have a question! I dug up the entire forum topic and didn't find an answer! Who has encountered the port configuration for ESP-01S? What command should I use to enable the port? Tell me who faced please! Thank you in advance!
Scott Worthington on Monday, 27 April 2020 13:39

Chitu says they only have it set up to work with their wifi modules not for all modules. Once a chitu wifi module is installed use the gcodes in the article to turn on the modules and set up your wifi access using your wifi name and password.

Chitu says they only have it set up to work with their wifi modules not for all modules. Once a chitu wifi module is installed use the gcodes in the article to turn on the modules and set up your wifi access using your wifi name and password.
Guest - Sinnick on Sunday, 12 July 2020 22:15

Hello!

Thanks to your post I've understood how to change the E-Steps of my 3d printer. Thank you man! Great post

Hello! Thanks to your post I've understood how to change the E-Steps of my 3d printer. Thank you man! Great post
Guest - JULIAN on Monday, 19 October 2020 01:42

HI I CAN CHANG MY HOTEND TO DRAGON AND TERMISTAT FOR 500C AND 500K

HI I CAN CHANG MY HOTEND TO DRAGON AND TERMISTAT FOR 500C AND 500K
Scott Worthington on Monday, 19 October 2020 01:52

Not with the current list of thermistors in the settings code chitu has given out. If its not listed here chitu either does not have it in the firmware or has not given out the info needed. You might be able to if you switch over to marlin on the chitu board.

Not with the current list of thermistors in the settings code chitu has given out. If its not listed here chitu either does not have it in the firmware or has not given out the info needed. You might be able to if you switch over to marlin on the chitu board.
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Wednesday, 21 October 2020

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