Re:comp_file example

It should work with any extension. But you need the full filename in the INI file entry.

my .ini file has 
COMP_FILE=yscrew.comp
COMP_FILE_TYPE=0

and my yscrew.comp file is

10 10.1000 9.9000

but this file is not working 

Should I set other things for using compensation module??

You need at least two lines of numbers for a comp file (and preferably a lot more)
If you are only going to use a single value at one point then you might as well just use the BACKLASH entry.

" Points in between nominal values are interpolated between the two nominals."

I can't interpolate if the current commanded position is not between two positions in the comp file.

try:
0 0.10 -0.10
10 10.1000 9.9000

For example. (if this is an inch machine with 10 inches of travel, or a metric machine with 10mm of travel,,,)

andypugh wrote:

You need at least two lines of numbers for a comp file (and preferably a lot more)
If you are only going to use a single value at one point then you might as well just use the BACKLASH entry.

" Points in between nominal values are interpolated between the two nominals."

I can't interpolate if the current commanded position is not between two positions in the comp file.

try:
0 0.10 -0.10
10 10.1000 9.9000

For example. (if this is an inch machine with 10 inches of travel, or a metric machine with 10mm of travel,,,)


 

Hello

I control my servo drivers only in pos mode.
This means that the servo driver gets a position from LCNC and drives independently there.
Stegen etc. I do not have in the ini.
Do then the parameters backlash or a comp_file work at all?

Compensation can certainly work on position mode systems, it is commonly used on open-loop stepper systems.

In fact it is probably more common on such systems, as closed-loop velocity-mode systems generally have scales on the axes and automatically compensate for backlash and deflection.