As a postscript.
Looking at some other configs, it appears that setting max-velocity and
max-acceleration to zero
DOES work if the stepgen is set to type 1 (velocity stepgen).
I use that on a config to control a spindle through a speed board that
converts step frequency into an analogue
voltage signal to control a VFD
regards
On 30/01/2017 17:43, schooner30@btinternet wrote:
I did look at that, as all my configs have values there.
However it should just mean the maximum possible as you say, so it
didn't seem to be wrong.
Glad you have it sorted
On 30/01/17 17:31, Curtis Dutton wrote:
SOLVED!
Thanks for your help.
The stepgen maxaccel and maxvel values were being set to 0 in my
config.. In linux cnc this was ok. The documentation states in
machinekit and linuxcnc that when set to 0 that the stepgens will
only be limited to the step timing settings and otherwise are not
limited. This does not seem to be the case as when I set the values
of maxaccel and maxvel on the stepgen to more than 0, then the
stepgen works.
On Monday, January 30, 2017 at 11:22:35 AM UTC-5, Curtis Dutton wrote:
Ok I was running a rip build from master. Commit:
079b1ed4adb30c60079d0d43a173002201f34538. Which appears to be the
latest commit.
Do you know what commit your sim is running from? I'd like to
build that version and see if I get a better result.
So I guess the hm2 driver now just exposes everything in the
config of the 5i25 and doesn't need the commit string?
I'll try the sim here later today to see if it works for me.
Thanks,
Curt
On Sunday, January 29, 2017 at 6:33:44 AM UTC-5, Schooner wrote:
If you run the hm2_stepper sim you should see position-fb
updated when you jog, as per screen shot.
Does that work?
Your test does not run
*newthread servo-thread cpu=0 1000000*
is asking for a new thread called /servo-thread/, of a period
/cpu=0/
Next the hm2_pci config string
*loadrt hm2_pci config="num_mencoders=0 num_stepgens=5
num_pwmgens=1"*
AFAIK has not been used for some while and will also not run
hence
https://github.com/machinekit/machinekit/blob/master/configs/hm2-stepper/5i25.ini#L11
<https://github.com/machinekit/machinekit/blob/master/configs/hm2-stepper/5i25.ini#L11>
https://github.com/machinekit/machinekit/blob/master/configs/hm2-stepper/hm2-stepper-5i25.hal#L44
<https://github.com/machinekit/machinekit/blob/master/configs/hm2-stepper/hm2-stepper-5i25.hal#L44>
the configuration is whatever the 5i25 is flashed as.
All of which raises the question of what you are running and
on what platform.
On a recent pull of machinekit on a amd64 computer running
Jessie, the 5i25 works fine, I have used my
5i25/7i76 combo a lot just recently.
On 28/01/17 20:26, Curtis Dutton wrote:
Ok I have attached a halcmd file that demonstrates the issue.
The debug.txt contains the output of the halrun session.
Notice that after the position-cmd is set, position-fb has
not changed.
The firmware on the 5i25 is 5i25_7i85sspx2
Thanks,
Curt
On Saturday, January 28, 2017 at 2:43:18 AM UTC-5, Schooner
wrote:
Without seeing your configuration files, we cannot even
begin to guess.
If you have done the same as John Fairbanks on the 7i80
post, you may have omitted the trajectory planner
*loadrt tp*
after trivkins or whatever is loaded and not specified
*tp=tp kins=trivkins* at the end of the motmod
configuration line
These are specific to Machinekit and without them your
config will act more like a sim.
See the sample configs for using 5i25 with Machinekit
https://github.com/machinekit/machinekit/blob/master/configs/hm2-stepper/hm2-stepper-5i25.hal#L33
<https://github.com/machinekit/machinekit/blob/master/configs/hm2-stepper/hm2-stepper-5i25.hal#L33>
regards
On 27/01/2017 22:07, Curtis Dutton wrote:
I'm experimenting with running my laser engraver with
machinekit. Currently I'm running linuxcnc master and
have it set up and operating properly.
The trouble I'm having is that my stepgens and my
pwmgen doesn't seem to be working properly. The signals
are all wired up properly, I have my threads scheduled
properly etc....
The stepgen shows it is enabled.
Anyhow when I send my position command to the stepgen
nothing seems to happen The position-feedback from the
stepgen does not change.
I also have a 7I84 hooked up to the 5i25 through
sserial. All of those pins show up in hal so
communication is working properly there. I can set pins
on the 7i84 interface and have physically verified that
they are changing properly.
It looks like the 5i25 is not responding even though it
works properly under linuxcnc.
Any suggesstions on what could be going on? Any tips or
things I should do to debug this?
Thanks,
Curt
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