Re: [CAD_CAM_EDM_DRO] Question on weird output from parallel breakout board pin #16?

Jeff,
I am sure you know this but I always have to shut down Mach2 and re-start
to get it to take any spindle speed changes. Make sure nothing esle is
assigned to that same pin ( outputs or enables )
Jim

----- Original Message -----
From: "washcomp" <jeff@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, February 02, 2005 6:39 AM
Subject: [CAD_CAM_EDM_DRO] Question on weird output from parallel breakout
board pin #16?


>
>
> I am using an Axxus parallel port breakout board with MACH2 on my CNC
> Bridgeport. I have just wired up a variable frequency drive. I am
> controlling the speed of the drive with a Homman designs Digispeed
> with a PWM signal from MACH2.
>
> I selected pin #16 on the breakout board and I seem to be getting a
> voltage on it, but no pulse. I changed it in the software config to
> be a step signal and got the same. I then looked at the board's
> documentation and it says the following:
>
> "Pins 1 and 16 are 5V outputs and can be used to connect with TTL
> devices such as transistors, logic gates, or microprocessors."
>
> The Digispeed is supposed to work with an ACTIVE LOW pulse.
>
> I can always rewire a bunch of stuff and steal one of the pins
> normally used for a step signal, but I would have thougght that this
> would have worked.
>
> This is where I'm getting a little hazy. I always thought that step,
> PWM and other signals WERE 5V, so this should be OK. Am I confused?
>
>
> Thanks,
> Jeff
>
>
>
>
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
> [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
> if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>