Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Drawbar on January 30, 2007, 12:58:35 PM

Title: Input question
Post by: Drawbar on January 30, 2007, 12:58:35 PM

I'm using Mach 3 version 2.0.39.

When I go into Config, Ports & Pins, under the Input Signals tab, there is an input called 'Timing'.  It's way down in the list past all the OEM inputs.  I can't find any info in the PDF about this input.  Can anyone enlighten me on what it does?

Brian

Title: Re: Input question
Post by: Graham Waterworth on January 30, 2007, 03:14:49 PM

The timing signal is for reading the spindle speed using a multi slotted disk and sensor.

Graham.

Title: Re: Input question
Post by: Drawbar on January 30, 2007, 10:51:52 PM

Whereas the index input is to be used with a sensor that generates only one pulse per revolution?

Brian

Title: Re: Input question
Post by: Graham Waterworth on January 31, 2007, 03:24:27 AM

You got it.

Graham.

Title: Re: Input question
Post by: camivic on April 03, 2007, 04:14:21 PM

Hi Brian,
where i can found i circuit diagram to make an index pulse for Mach ?

Thanks.

Vincenzo-Italy

Title: Re: Input question
Post by: Hood on April 03, 2007, 04:43:20 PM

I use one of these http://rswww.com/cgi-bin/bv/rswww/searchBrowseAction.do?obs=sObs&name=SiteStandard&No=0&N=0&Ntk=I18NAll&Ntt=4550896&Nty=1&D=4550896&Ntx=mode%20matchpartial&Dx=mode%20matchpartial&callingPage=/jsp/homePage/homePage.jsp&BV_SessionID=@@@@0639305413.1175635841@@@@&BV_EngineID=ccdcaddkigemhhlcefeceeldgkidhgj.0&cacheID=uknetscape&Nr=avl:uk
and a 220 Ohm resistor. You have 5V going to the resistor then to the Anode, 5V goes to the VCC,Cathode and ground are connected together and go to your 5V supplies ground and finally the output is connected to a pin on the breakout ( or parallel port).
Hood

Title: Re: Input question
Post by: camivic on April 03, 2007, 04:55:34 PM

Hi Hood, and thanks for your reply.
What is the differences between your solution and this http://www.dakeng.com/threading.html.

Thanks - Vincenzo

Title: Re: Input question
Post by: Hood on April 03, 2007, 05:00:40 PM

Quote from: camivic on April 03, 2007, 04:55:34 PM

Hi Hood, and thanks for your reply.
What is the differences between your solution and this http://www.dakeng.com/threading.html.

Thanks - Vincenzo

 Probably not a lot except cost ;) I use a disc with a slot in it but doing it the other way that they do it should work just the same. It was John P (Mach manual Ghuru) that told me what to use when I first converted my mill a few years back and it has served me well.
Hood

Title: Re: Input question
Post by: Hood on April 03, 2007, 05:05:17 PM

Heres a pic of it on my Bridgeport. Rusty washers are optional, new ones work just as well LOL
(http://mysite.wanadoo-members.co.uk/hoodsmachiningpages/BOSScomplete/SpeedSensor.jpg)

Title: Re: Input question
Post by: camivic on April 03, 2007, 05:26:03 PM

Ok Hood, i use your solution.
I have some OPB 825, OPB 861and a Sharp GP1S53; think you can i adapt it on your scheme?

Thanks anither time.