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This should be it.  

Yeh, my post must have broke. If you look a bit harder on eBay you will find better priced moduled for around $130. Some want stupid money. Don;t be frightened of buying from other countries...

Failed again to leave my workshop early.
Sorry i am blessed with writing jam at the moment, but good luck for recovery from the injury

version 2.9.4 did not get the change, only master branch.
You will need to save over the camview_widget with the supplied version again.

hey @rodw, was there something you wanted to add? looks like you just quoted my original post.... I know you have a lot of experience in this area, i have read more than a few of your posts so would love your input.

Thanks

The pierce delay starts from the beginning of arcOK so the delay turning the torch on makes no difference.
The internal relay will need a minimum current of 100 mA and the Mesa board generally can't deliver this. You need to add a pull down resistor as discussed in the qtplasmac docs.

bassti wrote:

At the moment, rotorhoming starts when i power on the machine.
The problem is that i want to home the z-axis first.

HOME_SEQUENCE in ini

Aforementioned docs references:

Reed relay:

linuxcnc.org/docs/devel/html/plasma/qtpl...l#plasma:reed-arc-ok

Contact loading schematic:

linuxcnc.org/docs/devel/html/plasma/qtpl...tact-load-schematics

Calculations:

linuxcnc.org/docs/devel/html/plasma/qtpl...asma:qt-contact-load

kworm wrote:

Unfortunately the relay in the unit is damaged and does not close. I ran through the diagnostics in the service manual to come to that conclusion and of course the service manual recommendation is to replace the inverter board which is half the cost of a new unit lol. It's also very difficult to access but some point down the road I will pull it apart and replace the relay on the board if possible. I'm going to try Tommy's suggestions and hopefully that will buy some time until I fix it or sell it and get another unit.

the most likely cause of a "damaged" relay is oxidisation because the current through the relay has  been below the minimum operating spec. Installing a HS10 1 K pulldown resistor is likely to fix the issue after a few operations once the oxide is burnt off. This is covered in the qtplasmac docs.

new features go into master branch (2.10) so this will never be in 2.9.4

Get a "reed contact" or "reed relay", make some 3 turns of the clamp wire around it.
That is it, cheap simple and never fails.
I am sure it was in the PlasmaC documentation, no idea if it is in QtPlasmaC.
See attached.

Unfortunately the relay in the unit is damaged and does not close. I ran through the diagnostics in the service manual to come to that conclusion and of course the service manual recommendation is to replace the inverter board which is half the cost of a new unit lol. It's also very difficult to access but some point down the road I will pull it apart and replace the relay on the board if possible. I'm going to try Tommy's suggestions and hopefully that will buy some time until I fix it or sell it and get another unit.

Sorry, I did see the previous post but it's from a year and a half ago. I guess I should have asked if it had been merged into 2.9.4 and/or master.

Changing the PWM scale changes the scaling of all PID parameters.
That is, a P term of 10 with a PWM scale of 10 is the same as a P term
of 1 with a PWM scale of 1, In both cases an error of 1 mm generates a
full scale (+ or - 10V)

There is no reason on a torque mode drive to change the default 
PWM scale of 10 (a scale of 10 means the PID output is scale in volts)
 

I need help. I tried converting the a-axis to w, making it leaner. However, I keep getting errors like dro_a and torch_a. Is there an easy way to add a w-axis as z2 ? I made it by editing the handler file and ui file  to overcome these errors; however, I can get it to show the z2,  i looked at the QtVCP library there is z2 there