Re: [Emc-users] THC

Yes, when I get some stock in. JT On 1/22/2016 6:05 PM, Jim Craig wrote: > John, > > Is the THCAD card going to be available in your store? > > Thanks, > > Jim > > On 1/22/2016 5:57 PM, John Thornton wrote: >> I use the Mesa THCAD card to convert volts to frequency then the thc >> component to

Re: [Emc-users] THC

I used the original THCAD card on my parallel port. You have to set the output frequency divider so the software can read the pulse stream. JT On 1/22/2016 6:15 PM, Jim Craig wrote: > Will the THCAD work with the paralell port? Will he need an FPGA card in > order to use the THCAD card? > >

Re: [Emc-users] THC

On 23 January 2016 at 03:07, Jim Craig wrote: > I think I answered my own question. Per the documentation output of the > THCAD is 100Khz to 1Mhz. Looks like it needs an FPGA encoder counter. It also says "The frequency output can optionally be divided by 32, 64 or

[Emc-users] THC

Second question of the day. A buddy of mine is getting ready to build a CNC plasma table. He has asked me to help with the LinuxCNC stuff and the CNC stuff in general. He is good with fabbing parts but not fully up to speed on the CNC side of things. I thought the following THC looked like a

Re: [Emc-users] THC

On 22 January 2016 at 21:56, Jim Craig wrote: > I thought the following THC looked like a good > piece.http://cnc4pc.com/motion-control/torch-height-control/non-contact-height-sensor-for-plasma-and-oxy-fuel-cutter.html#prodtabs-4 I think most folk have been using

Re: [Emc-users] THC

John, Is the THCAD card going to be available in your store? Thanks, Jim On 1/22/2016 5:57 PM, John Thornton wrote: > I use the Mesa THCAD card to convert volts to frequency then the thc > component to control my Z while cutting. About 1/5th the cost of that. > But if your using a Ox/Acc torch

Re: [Emc-users] THC

Will the THCAD work with the paralell port? Will he need an FPGA card in order to use the THCAD card? Thanks, Jim On 1/22/2016 5:57 PM, John Thornton wrote: > I use the Mesa THCAD card to convert volts to frequency then the thc > component to control my Z while cutting. About 1/5th the cost of

Re: [Emc-users] THC

I use the Mesa THCAD card to convert volts to frequency then the thc component to control my Z while cutting. About 1/5th the cost of that. But if your using a Ox/Acc torch then you need that. For plasma you want to control the height based on tip voltage. JT On 1/22/2016 3:56 PM, Jim Craig

Re: [Emc-users] THC

Oh I forgot my plasma build... http://gnipsel.com/shop/plasma/plasma.xhtml JT On 1/22/2016 3:56 PM, Jim Craig wrote: > Second question of the day. > > A buddy of mine is getting ready to build a CNC plasma table. He has > asked me to help with the LinuxCNC stuff and the CNC stuff in general. >

Re: [Emc-users] THC

I think I answered my own question. Per the documentation output of the THCAD is 100Khz to 1Mhz. Looks like it needs an FPGA encoder counter. On 1/22/2016 6:15 PM, Jim Craig wrote: > Will the THCAD work with the paralell port? Will he need an FPGA card in > order to use the THCAD card? > >

[Emc-users] THC filter cutoff frequency

Hi does anyone have an idea of what a good cutoff frequency for my THC tip voltage low pass filter should be? I have a 5th order Sallen-key Butterworth filter. -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype:

[Emc-users] THC and following error [was THC misbehavior]

Hello, folks! After my previous mail to the list I was encouraged by John Thornton to simplify thc.comp, and so I did. I removed several functions, including the idea that Z position is reported back without the offset added by thc. I would like thc to be as simple as possible - compare actual

[Emc-users] THC misbehavior

Hello, folks! I have a question to those EMC users that have experience with thc module. I have implemented all the necessary hardware, I have linked the pins according this page: http://www.linuxcnc.org/docview/html//man/man9/thc.9.html The result I am getting is that EMC receives the

Re: [Emc-users] THC misbehavior

No further configuration is needed than what is shown on the thc.9 man page. It should go up and down unless there is some kind of bug. I'll have to do some tests on my plasma to make sure there is not a bug. I assume you have thc.enable on... Does the nozzle return to the commanded position

Re: [Emc-users] THC - torch height control

On 2/19/2010 11:17 AM, Viesturs Lācis wrote: Dave wrote: Do you think you will have any issues with the ultrasonic sensor and the water mist from the waterjet? I was to work on a waterjet system next week but the project has been delayed. That machine has a constant mist/cloud of water

Re: [Emc-users] THC - torch height control

Dave wrote: Do you think you will have any issues with the ultrasonic sensor and the water mist from the waterjet? I was to work on a waterjet system next week but the project has been delayed. That machine has a constant mist/cloud of water vapor around it. Yeah, I was wondering about

Re: [Emc-users] THC - torch height control

hello! EMC only really understands digital signals, that is the problem. The sensors you show have analogue outputs. There are a number of ways to get analogue signals into EMC, but they all involve some form of signal conversion. The simplest is probably a voltage-frequency convertor IC

Re: [Emc-users] THC - torch height control

On 18 February 2010 08:15, Viesturs Lācis viesturs.la...@gmail.com wrote: ok, i understand that i need to convert sensor's output of 0-10V to digital signal. and i would prefer solution with lowest cost possible. is Pixsys DRR 245 controller suitable for this purpose? Not as far as I can see

Re: [Emc-users] THC - torch height control

On 2/18/2010 3:15 AM, Viesturs Lācis wrote: hello! EMC only really understands digital signals, that is the problem. The sensors you show have analogue outputs. There are a number of ways to get analogue signals into EMC, but they all involve some form of signal conversion.

Re: [Emc-users] THC - torch height control

On 18 February 2010 14:22, Dave e...@dc9.tzo.com wrote: Another way to do it is to use a cheap PLC like the Automation Direct Click PLC that has onboard analog and connect to it via Modbus The controller that he already has is Modbus, but I am not sure how well that integrates with

Re: [Emc-users] THC - torch height control

On Thu, 2010-02-18 at 09:22 -0500, Dave wrote: ... snip Another way to do it is to use a cheap PLC like the Automation Direct Click PLC that has onboard analog and connect to it via Modbus and get the values that way. Sure the PLC is smart but who cares as it is dirt cheap. Better to

Re: [Emc-users] THC - torch height control

Kirk Wallace ha scritto: On Thu, 2010-02-18 at 09:22 -0500, Dave wrote: ... snip Another way to do it is to use a cheap PLC like the Automation Direct Click PLC that has onboard analog and connect to it via Modbus and get the values that way. Sure the PLC is smart but who cares as it is

Re: [Emc-users] THC - torch height control

On Thu, 2010-02-18 at 17:10 +0100, Marco Paolini wrote: ... snip +1 to the modbus+PLC solution If you use a serial port, the rtai serial driver and an rs232-rs422 converter, you end up with a real-time modbus communication Marco Paolini Does EMC2 use the RTAI serial driver? -- Kirk

Re: [Emc-users] THC - torch height control

Kirk Wallace ha scritto: On Thu, 2010-02-18 at 17:10 +0100, Marco Paolini wrote: ... snip +1 to the modbus+PLC solution If you use a serial port, the rtai serial driver and an rs232-rs422 converter, you end up with a real-time modbus communication Marco Paolini Does EMC2 use the RTAI

[Emc-users] THC - torch height control

hello! i have recently started getting familiar with EMC2 - it is wonderful software, developers have my thanks and all the respect :)) i have been following this mailing list for few weeks and due to my limited knowledge in CNC and computer literacy/programming now it is time for me to ask a

Re: [Emc-users] THC - torch height control

On 17 February 2010 19:38, Viesturs Lācis viesturs.la...@gmail.com wrote: i have searched for more information on THC implementation and what confuses me is that it seems like i would need some additional hardware EMC only really understands digital signals, that is the problem. The sensors

Re: [Emc-users] THC - torch height control

New on 2.4 is a THC comp designed to work with the Mesa THCAD High Isolation A-D Card. This card takes a 0-10v input and converts it to a pulse that is read by the 5i20 encoder input. The velocity output goes into my THC comp and controls the Z axis with offsets to maintain the desired input.

Re: [Emc-users] THC - torch height control

On 2/17/2010 4:01 PM, Andy Pugh wrote: On 17 February 2010 19:38, Viesturs Lācisviesturs.la...@gmail.com wrote: i have searched for more information on THC implementation and what confuses me is that it seems like i would need some additional hardware EMC only really understands

Re: [Emc-users] THC - torch height control

part of this implementation is Tool [torch] Height Control - i have ultrasonic sensor that i would like to use for nozzle height control. Datasheet of the sensor is here: http://info.bannersalesforce.com/xpedio/groups/public/documents/literature/110738.pdf i have searched for more

Re: [Emc-users] THC - torch height control

Dave wrote: Do you think you will have any issues with the ultrasonic sensor and the water mist from the waterjet? I was to work on a waterjet system next week but the project has been delayed. That machine has a constant mist/cloud of water vapor around it. Yeah, I was wondering

Re: [Emc-users] THC Systems for plasma?

though I wouldn't think it will be all that much longer. Alan -Original Message- From: Sasa Vilic [mailto:sasavi...@gmail.com] Sent: Friday, March 27, 2009 7:55 PM To: alano...@att.net; Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] THC Systems for plasma? I already

Re: [Emc-users] THC Systems for plasma?

On 29 Mar 2009 at 16:22, Glen wrote: Is there anything to stop the torch diving when it goes over the edge of the plate ? Glen. The programmer. John -- ___

Re: [Emc-users] THC Systems for plasma?

it will be all that much longer. Alan -Original Message- From: Sasa Vilic [mailto:sasavi...@gmail.com] Sent: Friday, March 27, 2009 7:55 PM To: alano...@att.net; Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] THC Systems for plasma? I already have one. It's good, but it has

[Emc-users] THC Systems for plasma?

Does anyone know good and reliable THC system for plasma table? Thanks, Sasa Vilic -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] THC Systems for plasma?

: Sasa Vilic [mailto:sasavi...@gmail.com] Sent: Friday, March 27, 2009 6:19 PM To: Enhanced Machine Controller (EMC) Subject: [Emc-users] THC Systems for plasma? Does anyone know good and reliable THC system for plasma table? Thanks, Sasa Vilic

Re: [Emc-users] THC Systems for plasma?

with one of these as soon as my table is ready too. Alan -Original Message- From: Sasa Vilic [mailto:sasavi...@gmail.com] Sent: Friday, March 27, 2009 6:19 PM To: Enhanced Machine Controller (EMC) Subject: [Emc-users] THC Systems for plasma? Does anyone know good and reliable THC