RS485 For Hypertherms

Update: I bought this one to test USB to RS-485. It should be here tomorrow, I'll test over the weekend as well, and report back. I chose this brand because it's what my RS-232 to RS-485 converter is, and that works perfect.

snowgoer540 wrote: Update: I bought this one to test USB to RS-485. It should be here tomorrow, I'll test over the weekend as well, and report back. I chose this brand because it's what my RS-232 to RS-485 converter is, and that works perfect.

Easy testing today. USB to RS485 showed up, hooked it up, ran Phill's pmx_test.py, selected the correct port, connected with no issues, everything works as it should. I would highly recommend we add this to the appendix for people who dont want to play with serial cards (which were more expensive and required a converter, etc.).

Screenshot of what I bought:

snowgoer540 wrote:

snowgoer540 wrote: Update: I bought this one to test USB to RS-485. It should be here tomorrow, I'll test over the weekend as well, and report back. I chose this brand because it's what my RS-232 to RS-485 converter is, and that works perfect.

Easy testing today. USB to RS485 showed up, hooked it up, ran Phill's pmx_test.py, selected the correct port, connected with no issues, everything works as it should. I would highly recommend we add this to the appendix for people who dont want to play with serial cards (which were more expensive and required a converter, etc.).

Screenshot of what I bought:

Thanks for testing I have found this one and seems to be the same www.aliexpress.com/item/4001038346231.ht...591356-08645-Y7bAZbY

I know this is off topic here but a quick question re connecting the Ohmic probe for the HP XP 65

Re this from the manual :-
Digital output. Optional, only required if using ohmic probing
Connected to the probe enabling input
This pin is used to arm the ohmic probe

How is this actual wired ie is it 24V + to TB-3 pin 14 then pin 13 to the probe on the shield of the torch to ground (plate)

If so does in need to be in series with a resistor to limit the current.

A diagram would be helpful.

Clive S wrote:
A diagram would be helpful.

More than a diagram, its actually in the docs.
linuxcnc.org/docs/2.8/html/plasma/plasma...r.html#ohmic-sensing

Clive S wrote: A diagram would be helpful.

It is a bit difficult to do that in the PlasmaC docs as there are several different ways of doing it, for instance there is the way Rod linked to plus there is the another method described in the primer using the ohmic component plus there is a method that uses a separate probe that is extended etc, etc. So all PlasmaC provides is an output and an input that hopefully will allow all these different methods to work.