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#define HOMING_FEEDRATE_Z (20*60)

Posted by luckyflyer 
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luckyflyer
#define HOMING_FEEDRATE_Z (20*60)
November 30, 2019 03:17PM
Can someone explain to me the line in marlin "#define HOMING_FEEDRATE_Z (20*60)" as it relates to changing the Z homing speed? I understand that changing the 20 number up or down changes the homing feedrate but I would like to know what 20"60 means regarding the Z feed rate in mm/m. To know this would be helpful in setting up a piezo z probe.
Thanks
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VDX
Re: #define HOMING_FEEDRATE_Z (20*60)
November 30, 2019 03:46PM
... 20mm/s or 1200mm/min (->20mm*60s) ...

Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]
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luckyflyer
Re: #define HOMING_FEEDRATE_Z (20*60)
November 30, 2019 04:33PM
Thanks, makes sense now.
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David J
Re: #define HOMING_FEEDRATE_Z (20*60)
December 01, 2019 07:56AM
I'm glad someone explained this - I was also puzzled...
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VDX
Re: #define HOMING_FEEDRATE_Z (20*60)
December 01, 2019 11:16AM
cool smiley

Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]
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doug_scott
Re: #define HOMING_FEEDRATE_Z (20*60)
December 15, 2020 05:58AM
Any idea what the purpose for defining the speed this way was? Can this also be entered directly as the mm/min number? The "20*60" format appears to be the default way to enter speeds now through-out the two config files, just wondering why.
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VDX
Re: #define HOMING_FEEDRATE_Z (20*60)
December 15, 2020 07:30AM
... it's mainly for "human readability", not so for calculation -- most folks around CNC-milling "think" in m/min, many technicians in mm/s smoking smiley

Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]
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