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Isolating an Input Problem
« on: July 25, 2008, 05:42:49 PM »
:)
External E-Stop, NC Pushbutton, OEM Trigger, Input 15, Active LOW.
C11 BoB with on-board Analog OUT to a VFD.
When the part program starts, it calls M3 S1200 and within seconds, "External E-Stop Requested".
Set debounce to 2000, within 10 seconds...same thing.
REMOVED the input wiring from the BoB and put a 2" jumper, 5V to 15.  Same thing happens.
Moved the jumper to 5V and 12....NO TRIP.
Set the debounce back to 10....NO TRIP>
Wired the button back to 5V and 12, debounce at 10....runs forever.
Does this positively isolate the problem to the BoB ?
Or is there anything else any of you know of that I could check ?
Thanks,
RC

Offline Hood

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Re: Isolating an Input Problem
« Reply #1 on: July 25, 2008, 05:55:06 PM »
Sounds like it, maybe just too much going on in these multi function BOBs?

Hood
Re: Isolating an Input Problem
« Reply #2 on: July 25, 2008, 06:04:38 PM »
Thanks for your input Hood.
"All on One Board" is a cool concept and really saves on space.
But I'm with you....maybe one shouldn't have "All Eggs in One Basket".
RC

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Re: Isolating an Input Problem
« Reply #3 on: July 25, 2008, 06:37:47 PM »
Yes compact is nice but sometimes its not the best. Not saying that is the case here, was just kind of thinking aloud but I dont even use the relays on my BOB, prefer to have relays mounted a bit further away :) Maybe I just go a bit overboard on trying to make sure I dont have noise issues  ::)

Hood
Re: Isolating an Input Problem
« Reply #4 on: July 25, 2008, 06:43:31 PM »
I agree...All on one board does is introduce the possibility if nothing else.
You using a PDM Extra..or something like that ?
Good luck so far ?
RC

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Re: Isolating an Input Problem
« Reply #5 on: July 25, 2008, 06:44:51 PM »
PDM Extra?

Hood
Re: Isolating an Input Problem
« Reply #6 on: July 25, 2008, 06:47:58 PM »
pmdx...pdmx...p?????? I think the X is for extra...maybe not

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Re: Isolating an Input Problem
« Reply #7 on: July 25, 2008, 06:58:33 PM »
ah OK yes I have the PMDX 122, its a basic board in as much as theres only one relay on it but as I said I dont use the relay, just dont fancy switching anything greater than 5v on the breakout as it has the possibility of introducing noise. I do like the PMDX it is high on quality from what I see, it was the second BOB I owned after getting a recommendation from a guy who knows his stuff (Yes you John P ;) ) First BOB was from eBay and it caused me no end of grief, have never seen these BOBs again so maybe that is why LOL. Only other BOB I have used was Eds from CNC Building Blocks, another excellent board with the nice Index homing feature, sadly he is no longer making them :(

Hood
Re: Isolating an Input Problem
« Reply #8 on: July 25, 2008, 07:20:05 PM »
http://www.pmdx.com/PMDX-122/
eXpress.......not eXtra.
Are you using the SS with this ?
RC

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Re: Isolating an Input Problem
« Reply #9 on: July 25, 2008, 07:27:06 PM »
Yes, have the PMDX on the Bridgeport with the SS, also have a PMDX and Acustep on the Lathe but not used the SS on that yet as the spindle syc is not implemented  and I do a lot of threading. The Beaver mill that I am doing also has a PMDX and an Acustep with SS but again I have not run that yet.
Hood