engraving depth setting in realtime
18 Mar 2016 06:48 #71847
by wicki
Replied by wicki on topic engraving depth setting in realtime
thanks - I think halmodule is what I want
![;-) ;-)](/media/kunena/emoticons/wink.png)
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18 Mar 2016 09:22 #71849
by wicki
Replied by wicki on topic engraving depth setting in realtime
OK - it works.
thats nice... thank you.
Now it would be fine to start the script at startup of linuxCNC.
I tried
[PYTHON]
TOPLEVEL = /opt/emc2-dev/pytest.py
but it results in
...cant instantiate Python plugin....
the script is simple:
#!/usr/bin/python
import hal, time, serial
h = hal.component("passthrough")
h.newpin("in", hal.HAL_FLOAT, hal.HAL_IN)
h.newpin("Zdist", hal.HAL_FLOAT, hal.HAL_OUT)
h.ready()
f=1;
ser = serial.Serial('/dev/ttyUSB0', 115200, timeout=1)
try:
while 1:
s = ser.readline()
s=s[1]+s[2]+s[3]+s[4]
snum=float(s)/50
snum=int(snum)
print snum
f=f+1;
time.sleep(1)
h = snum;
except KeyboardInterrupt:
ser.close()
raise SystemExit
thats nice... thank you.
Now it would be fine to start the script at startup of linuxCNC.
I tried
[PYTHON]
TOPLEVEL = /opt/emc2-dev/pytest.py
but it results in
...cant instantiate Python plugin....
the script is simple:
#!/usr/bin/python
import hal, time, serial
h = hal.component("passthrough")
h.newpin("in", hal.HAL_FLOAT, hal.HAL_IN)
h.newpin("Zdist", hal.HAL_FLOAT, hal.HAL_OUT)
h.ready()
f=1;
ser = serial.Serial('/dev/ttyUSB0', 115200, timeout=1)
try:
while 1:
s = ser.readline()
s=s[1]+s[2]+s[3]+s[4]
snum=float(s)/50
snum=int(snum)
print snum
f=f+1;
time.sleep(1)
h = snum;
except KeyboardInterrupt:
ser.close()
raise SystemExit
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18 Mar 2016 10:38 #71853
by andypugh
That syntax is for re-mapping G-code commands.
Loading your new module is actually rather easier than that. just addto the HAL file.
You probably want to change the component name, and the file name and component name need to match. (ie, a file called zadjust.py and h = hal.component("zadjust")
Replied by andypugh on topic engraving depth setting in realtime
Now it would be fine to start the script at startup of linuxCNC.
I tried
[PYTHON]
TOPLEVEL = /opt/emc2-dev/pytest.py
That syntax is for re-mapping G-code commands.
Loading your new module is actually rather easier than that. just add
loadusr passthrough
You probably want to change the component name, and the file name and component name need to match. (ie, a file called zadjust.py and h = hal.component("zadjust")
The following user(s) said Thank You: wicki
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18 Mar 2016 18:05 #71876
by wicki
Replied by wicki on topic engraving depth setting in realtime
real nice ![;-) ;-)](/media/kunena/emoticons/wink.png)
I just added
HALCMD = loadrt offset
HALCMD = loadusr /opt/emc2-dev/python/zadjust.py
to the -ini-file.
this also works....
![;-) ;-)](/media/kunena/emoticons/wink.png)
I just added
HALCMD = loadrt offset
HALCMD = loadusr /opt/emc2-dev/python/zadjust.py
to the -ini-file.
this also works....
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23 Mar 2016 20:02 #72068
by wicki
Replied by wicki on topic engraving depth setting in realtime
The engraving-depth-probe is working now.
But I need some help again.
There is one question remaining:
A python-script sets the fine-position of the z-axis via z-offset when engraving.
But the fine-tuning took some time.
So, if the value of the z-axis reaches the engraving-depth, x/y-axes start to
move, but the fine-setting (by z-offset) is not finished.
What is the right way to pause x/y-move until z-offset-position is reached?
But I need some help again.
There is one question remaining:
A python-script sets the fine-position of the z-axis via z-offset when engraving.
But the fine-tuning took some time.
So, if the value of the z-axis reaches the engraving-depth, x/y-axes start to
move, but the fine-setting (by z-offset) is not finished.
What is the right way to pause x/y-move until z-offset-position is reached?
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27 Mar 2016 10:41 #72207
by andypugh
This might be a fundamental problem due to the XY moves being handled by the realtime system and the offset happening in a user-space Python module. Or it might not be anything to do with this.
Have a look at motion.feed-inhibit
linuxcnc.org/docs/2.7/html/man/man9/motion.9.html
Replied by andypugh on topic engraving depth setting in realtime
A python-script sets the fine-position of the z-axis via z-offset when engraving.
But the fine-tuning took some time.
So, if the value of the z-axis reaches the engraving-depth, x/y-axes start to
move, but the fine-setting (by z-offset) is not finished.
This might be a fundamental problem due to the XY moves being handled by the realtime system and the offset happening in a user-space Python module. Or it might not be anything to do with this.
What is the right way to pause x/y-move until z-offset-position is reached?
Have a look at motion.feed-inhibit
linuxcnc.org/docs/2.7/html/man/man9/motion.9.html
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28 Mar 2016 07:44 #72238
by wicki
Yes, it works - for all axes at the same time.
But its not possible to stop the movement of only a single axis with
motion.xxx - or I have not found these option....
Replied by wicki on topic engraving depth setting in realtime
Have a look at motion.feed-inhibit
linuxcnc.org/docs/2.7/html/man/man9/motion.9.html
Yes, it works - for all axes at the same time.
But its not possible to stop the movement of only a single axis with
motion.xxx - or I have not found these option....
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28 Mar 2016 09:47 #72239
by andypugh
That shouldn't matter, your Z-offsetting is not happening as an axis move, it is an offset to the motor position.
Replied by andypugh on topic engraving depth setting in realtime
Yes, it works - for all axes at the same time.
That shouldn't matter, your Z-offsetting is not happening as an axis move, it is an offset to the motor position.
The following user(s) said Thank You: wicki
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28 Mar 2016 10:24 #72240
by wicki
Yes! Thats it.
I had not tried to move z by offset while motion.feed-inhibit is true....
Thank you
Replied by wicki on topic engraving depth setting in realtime
That shouldn't matter, your Z-offsetting is not happening as an axis move, it is an offset to the motor position.
Yes! Thats it.
I had not tried to move z by offset while motion.feed-inhibit is true....
Thank you
![;-) ;-)](/media/kunena/emoticons/wink.png)
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