How to wait for X seconds in GCODE
06 Dec 2014 19:38 #53761
by gaeldk
How to wait for X seconds in GCODE was created by gaeldk
Hello,
When I start my program
I start with the following sequence
G17 G21 G90
G00 X0 Y0 Z9.999 M03
then the rest
How can I wait for 5 seconds after the M03 to be sure that my spindle manages to reach the required speed ? I know that it does so in 5 seconds.
Only the on/off of the spindle is digitally controlled on my setup.
When I start my program
I start with the following sequence
G17 G21 G90
G00 X0 Y0 Z9.999 M03
then the rest
How can I wait for 5 seconds after the M03 to be sure that my spindle manages to reach the required speed ? I know that it does so in 5 seconds.
Only the on/off of the spindle is digitally controlled on my setup.
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06 Dec 2014 20:12 - 06 Dec 2014 20:22 #53762
by gaeldk
Replied by gaeldk on topic How to wait for X seconds in GCODE
Considering doing this via an M1xx user defined command linked to a batch like this :
all this in a M101 file...
A bit violent, is there something smarter ?
#!/bin/bash
# wait for P seconds
sleep $1
exit 0all this in a M101 file...
A bit violent, is there something smarter ?
Last edit: 06 Dec 2014 20:22 by gaeldk.
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06 Dec 2014 20:26 #53763
by ArcEye
Replied by ArcEye on topic How to wait for X seconds in GCODE
Hi
www.linuxcnc.org/docs/devel/html/gcode/gcode.html#sec:G4-Dwell
G4 P5
will do what you want.
I do the same all the time to ensure spindle is up to speed on my lathe before commencing a program
regards
www.linuxcnc.org/docs/devel/html/gcode/gcode.html#sec:G4-Dwell
G4 P5
will do what you want.
I do the same all the time to ensure spindle is up to speed on my lathe before commencing a program
regards
The following user(s) said Thank You: gaeldk
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06 Dec 2014 20:41 #53764
by gaeldk
Replied by gaeldk on topic How to wait for X seconds in GCODE
Thanks ! So the cause of all this is my poor English...
I was looking for a sleep or wait command, had no idea what dwell meant....
I was looking for a sleep or wait command, had no idea what dwell meant....
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06 Dec 2014 21:11 #53766
by ArcEye
Replied by ArcEye on topic How to wait for X seconds in GCODE
I think it is called that because of the typical usage for it, which is to dwell at the bottom of a hole to ensure cut depth
or above a hole to allow swarf clearance etc
regards
or above a hole to allow swarf clearance etc
regards
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19 Dec 2016 15:54 #84416
by clunc
Replied by clunc on topic How to wait for X seconds in GCODE
As a non-daily CNC hobbyist/operator, I have an M0/Pause after M5, w/a (MSG, Paused for spindle to reach speed.)
I find this wait very helpful to compose myself for the havoc my code is about to unleash.
I find this wait very helpful to compose myself for the havoc my code is about to unleash.
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19 Dec 2016 17:13 #84417
by Badger
Replied by Badger on topic How to wait for X seconds in GCODE
I take a similar approach to double check possible conflicts and oversights before proceeding.
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20 Dec 2016 13:39 #84455
by andypugh
If you have spindle speed feedback then you can use the motion.spindle.at-speed input pin to get a more useful behaviour. The machine will make G0 positioning moves, but won't start the G1 feed moves until the spindle is at the requested speed.
(this is rather useful for constant-surface-speed operation on a lathe)
Replied by andypugh on topic How to wait for X seconds in GCODE
As a non-daily CNC hobbyist/operator, I have an M0/Pause after M5, w/a (MSG, Paused for spindle to reach speed.)
If you have spindle speed feedback then you can use the motion.spindle.at-speed input pin to get a more useful behaviour. The machine will make G0 positioning moves, but won't start the G1 feed moves until the spindle is at the requested speed.
(this is rather useful for constant-surface-speed operation on a lathe)
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