4th axis angular need help from newbie!!!

Hi,

I built my 4 axis linear hot wire cutter (X,A axis horizontal, Y,Z vertical movement; X,Y right and A,Z left side). I am going to cut wings on it. I use motor driver board TB6560 ( is not the best, got to late) . I used for controlling the machine mach3. I didn't want to pay mach3 license for cutting wings for max. two aircraft per year. Therefore I decided to switch to linuxcnc (version 2.5 Ubuntu 10.4).

I configured in stepconfig 4 axis X,Y,Z A limit and home switches. I am able to home all axis but:(current Issues)

First Question
There is something wrong in my configuration one of the axis runs angular the remaining axis run linear. By homing the axis one motor sounded strange. All axis should run linear. What I have to change? ( ?change stepconfig INI file? How?)

Second Question
I had a issue in mach3 with motion mode. I had to switch from exact stop to constant velocity. Is there any configuration in linuxCNC for motion mode - constant velocity?

Thank you in advance for your help
Libor

Hi

1. The axis type must be set in the ini file. A defaults to rotary
www.linuxcnc.org/docs/html/config/ini_co...tml#sub:AXIS-section

2. I don't know what 'constant velocity mode' is in this context. That is Mach terminology presumably.
Suspect that as you refer to 'exact stop' in the same sentence, what you require is G61 or G64
www.linuxcnc.org/docs/html/gcode/gcode.html#sec:G61-G61_1

regards

Hi,

I have just normally set up as XY / UV. I found a tutorial here : code.google.com/p/emc2hotwinch/ Due to some issues I can not start linuxCNC now. See below.

Attached you will find the horkydraht.hal and horkydraht.ini and a file with an error message.
Could you anybody from you check the .hal and .ini file there must be a bug.

Thank you very much

best regards
Libor

Debug file information:
Can not find -sec MOT -var MOT -num 1
Can not find -sec IO -var IO -num 1
Can not find -sec LINUXCNC -var NML_FILE -num 1
Can not find -sec EMC -var NML_FILE -num 1
horkydrat.hal:7: Ini variable '[EMCMOT]SHMEM_KEY' not found.
1849
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

horkydrat.hal:7: Ini variable '[EMCMOT]SHMEM_KEY' not found.

that is the problem.

In your horkydrat.ini file under the [EMCMOT] section, add the line
SHMEM_KEY = 111


unfortunately, motmod (the module defined under [EMCMOT] doesnt have any info on the manual page about the key parameter.
So I'm not sure exactly what the number should be, but 111 seems to be a popular number.

If that doesn't work, you can try removing the "key=[EMCMOT]SHMEM_KEY " from the second line of your .hal file.

Hi,

I fix the problem with horkydrat.hal:7: Ini variable '[EMCMOT]SHMEM_KEY' not found.

Now I have another problem. See below:

Could anybody help to fix the problem. Thank you very much. Attached you will fine .hal .ini and debug file

Debug file:

Debug file information:
Can not find -sec MOT -var MOT -num 1
Can not find -sec IO -var IO -num 1
Can not find -sec LINUXCNC -var NML_FILE -num 1
Can not find -sec EMC -var NML_FILE -num 1
insmod: error inserting '/usr/realtime-2.6.32-122-rtai/modules/linuxcnc/hal_parport.ko': -1 Resource temporarily unavailable
horkydrat.hal:13: exit value: 1
horkydrat.hal:13: insmod failed, returned -1
See the output of 'dmesg' for more information.
5196
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

See the output of 'dmesg' for more information.

What is in dmesg?
Please post it

regards

Atteched you will find dmesg.

libas77 wrote:

Atteched you will find dmesg.

Nothing attached

Start linuxcnc, get the error and then run dmesg > dmesg.txt and attach the resultant dmesg.txt file
which will attach OK

regards