Hello Guest it is January 26, 2021, 07:30:27 AM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Messages - Sparc

Pages: 1
Modbus / Controlling Hypertherm Plasma via ModBus
« on: January 08, 2014, 04:54:25 AM »
Hi everyone;

We've build our own cnc plasma cutter and controlling it via Mach3 with smootstepper and panasonic servos.

Everything works fine.

What we want to do next is, to control the plasma generators current setting from mach3 gcode ( s command ) via modbus.

The protocol that hypertherm needs to receive on his Rs485 port is ModBus ASCII.

I've read here in forums that Mach3 do not send ModBus data in Serial/ASCII format.

My Questions :

1. Does it help if we use a ModBus RTU to ModBUS ASCII converter ( Hardware ) ?

2. If yes where can i find detailed information how we must configure and setup Mach3, so an S command in G-Code ( or some other way ) will send a given command ( it is cleared in the Hypertherm documentation ) to the Hypertherm RS485 port.

A lot of thanks in advance.



We want to use mach3 with the G41 and G42 codes. The wish is that if we push feed hold the torch goes off and the thc rises up. And then if "start" pushed that the system goes again.

It this in any way possible.

It would be nice if a tool dia ( kerf ) change will take effect after the "start"

Any ideas ?

Many thanks in advance


General Mach Discussion / Re: "Hold" command for arc controller unit.
« on: March 16, 2013, 05:15:48 PM »
I want map in port and pins section the output 6 to an unused connector on the cnc interface card. Am I right?

General Mach Discussion / Re: "Hold" command for arc controller unit.
« on: March 16, 2013, 06:54:37 AM »
Yes this is how it works, freezes the Z.
It was successful.

But after so long i have changed the arc controller. The new one has a freezing option below 30V and works very good at the corners.
Check your arc controller, it may have this option ready.


Hi again.

The sensor phc has the input of "hold". That means if you send a signal to that port the thc will stop movind up and down. This is a little bit different like mach3 stop his own Z axis.

I have exprienced yesterday offline in mach3 plasma screen set, if the blended speed goes slower than the given one the output 6 goes active and then back again if the blended speed raises. That is all without a brain.
What you think ?

Best Regards

General Mach Discussion / Re: "Hold" command for arc controller unit.
« on: March 15, 2013, 08:09:00 AM »
Hi Giannis;

That's exactly what we are need at the moment. We want to use Hypertherm Sensor PHC ( It's a standalone THC with corner hold signal input ) and MACH3.

Can you please share your feedback. Was your application succesfull?

Best Regards in advance.

Was fixed with a brain as shown to the attached bitmap, (just saying if anyone wants to do the same.)
This software is amazing. Think of something you want to do with a 6 axis software and you can do it immediatelly...
Thanks mach3....  :) he he


We are planning to make our own plasma table. We will use the Hypertherm Sensor PHC.

The target is to use the internal anti-dive function of mach3.
But this function diables only the Z-Axis movement.

How we can modify the function so we can have a signal on a given output port if the movement speed goes below the percentage given in OEMCODE 82?

Or must we have a special script for this.

Any idea will be very helpful. Best Regards in advance.


Pages: 1