wrong scale thc of the z axis during cutting on qtplasmac

1. Can you post a backup of your config (created from the parameters tab)?  

2. At a minimum, if you can’t post the backup, can you tell us what version of QtPlasmaC are you on?  (It’s in the header of the program window)
 

billykid wrote:

This is the new configuration, it is much better but thc problem remains .. here I have the backup
latency error doesn't matter.
Thanks in advance

Your machine is a metric machine, so setting plasmac.thc-feed-rate to 100 is setting it to 100mm/min.  That is incredibly slow, so slow that I am surprised you consider it to be "working".  Especially when your Z axis is capable of 1500mm/min.

I see that your P and I gains are set to 500.  You should not have to set them that high, but in your case you do, because you set the plasmac.thc-feed-rate pin to 100.  

Try the following:
1. Delete plasmac.thc-feed-rate 100 from qtplasma2.hal.  
2. Open QtPlasmaC
3. Open HalMeter from the parameters tab
4. Look for plasmac.thc-feed-rate
5. Take a screen shot and post it here/report what value the pin is set to 

Depending what the results of 5 are, I will also recommend the following:
6. Change your P gain back to the default value of 10.  I've seen people report needing to set this to 20 to have it work to their satisfaction.  Most of us use the default value with 0 issues. 
7. Change your I gain back to the default value of 0

I also see that you don't use Auto Volts.  You might give that a try.  It can make things way easier as it takes away the need to guess at voltages for different materials. 

Perhaps I am missing something.

This is from qtplasma2.hal in the backup you posted:

as such, plasmac.thc-feed-rate is set in the qtplasma2.hal file. Were you suggesting pncconf added that? I thought you said earlier that you added it manually?