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grbl-mode [2017/01/25 16:12]
arthur
grbl-mode [2018/05/24 13:55] (current)
146.90.249.51
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 = Using Smoothie in grbl_mode = Using Smoothie in grbl_mode
 +
 +(Or CNC mode)
  
 Smoothie'​s main job is to interpret G-code and to convert it into movement and actions. Smoothie'​s main job is to interpret G-code and to convert it into movement and actions.
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 Smoothie supports two different G-code "​dialects"​ :  Smoothie supports two different G-code "​dialects"​ : 
  
-* The "​reprap"​ dialect, for 3D printing +* The "​reprap"​ dialect, for 3D printing ​(NOT NIST compliant) 
-* The "​grbl"​ dialect, for CNC milling+* The "​grbl"​ dialect, for CNC milling ​(Generally NIST compliant)
  
 The "​grbl"​ dialect is the closest to the "​normal"​ Gcode standard ( NIST ), and is adequate and useful for CNC milling. The "​grbl"​ dialect is the closest to the "​normal"​ Gcode standard ( NIST ), and is adequate and useful for CNC milling.
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 Therefore, we support both formats. Therefore, we support both formats.
  
-The way you choose which format Smoothie will interpret the G-code you send to it as, is by changing the {{grbl_mode}} option.+The way you choose which format Smoothie will interpret the G-code you send to it as, is by changing the <kbd>grbl_mode</​kbd> ​option.
  
-If you set it to {{true}} : +If you set it to <kbd>true</​kbd> ​:
  
-[[code]]+<code>
 grbl_mode ​   true grbl_mode ​   true
-[[/code]]+</code>
  
 Then Smoothie will interpret the G-code you send to it the same way GRBL or LinuxCNC does, as "​normal"​ CNC G-code. Then Smoothie will interpret the G-code you send to it the same way GRBL or LinuxCNC does, as "​normal"​ CNC G-code.
  
-If however you set it to {{false}} +If however you set it to <kbd>false</​kbd> ​
  
-[[code]]+<code>
 grbl_mode ​   false grbl_mode ​   false
-[[/code]]+</code>
  
 Then Smoothie will interpret the G-code you send to it the same way Reprap-type firmwares interpret it, as "3D printing"​ G-code. Then Smoothie will interpret the G-code you send to it the same way Reprap-type firmwares interpret it, as "3D printing"​ G-code.
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 Smoothie has a special "​CNC"​ build with some special CNC features and adaptations. Smoothie has a special "​CNC"​ build with some special CNC features and adaptations.
  
-This special build has {{grbl_mode}} enabled ( set to "​true"​ ) by default.+This special build has <kbd>grbl_mode</​kbd> ​enabled ( set to "​true"​ ) by default.
  
-You can get the special CNC build pre-compiled at [[[getting-smoothie]]|or compile it yourself at [[compiling-smoothie]]]+You can get the special CNC build pre-compiled at [[getting-smoothie]] or compile it yourself at [[compiling-smoothie]]
  
 </​callout>​ </​callout>​
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 This page only mentions 3D printers and CNC mills. Lasers are neither. This page only mentions 3D printers and CNC mills. Lasers are neither.
  
-Traditionally,​ Lasercutting software ( like [[[laserweb]]|or [[visicut]]] ) have learned to talk to Smoothie in it's 3D printing mode.+Traditionally,​ Lasercutting software ( like [[laserweb]] or [[visicut]] ) have learned to talk to Smoothie in it's 3D printing mode.
  
 However, more CNC oriented software can also be used to control lasers ( they are virtually similar to a CNC mill with a very thin tool and no Z axis ), this is the case for example of [[bcnc]]. However, more CNC oriented software can also be used to control lasers ( they are virtually similar to a CNC mill with a very thin tool and no Z axis ), this is the case for example of [[bcnc]].
 </​callout>​ </​callout>​
 +
 +Typical differences between 3d mode and CNC mode are:-
 +
 +1. Error messages are different
 +2. G28 goes to park position and is NOT home, $H homes in CNC mode
 +3. Many GCodes may be differently interpreted in CNC mode than in 3D mode, please check your gcode references (Linuxcnc has a good GCode reference, do not use the reprap gcode reference for CNC mode)
 +
 +**NOTE** you cannot generally use pronterface to control CNC/grbl mode, as Pronterface is for 3D printers and uses a different dialect of gcode, it also does not allow you to send commands such as $H to home. It also tends to truncate commands like G28.2 by not sending the .2 part.
 +