On Fri, 7 Oct 2011, Peter C. Wallace wrote:
> Date: Fri, 7 Oct 2011 08:10:29 -0700 (PDT)
> From: Peter C. Wallace <[email protected]>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <[email protected]>
> To: "Enhanced Machine Controller (EMC)" <[email protected]>
> Subject: Re: [Emc-users] Zero output from stepgen on 7i43
>
> On Fri, 7 Oct 2011, Viesturs L?cis wrote:
>
>> Date: Fri, 7 Oct 2011 17:52:14 +0300
>> From: "[UTF-8] Viesturs L?cis" <[email protected]>
>> Reply-To: "Enhanced Machine Controller (EMC)"
>> <[email protected]>
>> To: "Enhanced Machine Controller (EMC)" <[email protected]>
>> Subject: Re: [Emc-users] Zero output from stepgen on 7i43
>>
>> 2011/10/7 Peter C. Wallace <[email protected]>:
>>>
>>> Can you disconnect your external wiring and try the example HAL/INI file?
>>> (the
>>> hm2-stepper/7i43) then check the step/dir pins (check the dmesg or
>>> correct.PIN
>>> file for pinout)
>>
>> I removed the 50-pin header and tried to measure with multimeter -
>> direction pin changed from 0 to 3,2 V and back, when changed
>> directions, step pin changed from 0.02 to 0.08 and back, when motor
>> should had moved or no.
>>
>> Since step/dir pins for stepgen.0 was matching my wiring, I attached
>> the connector to see, if there would be any response from motor, but
>> nothing happened.
>
>
>
> If you get 0V when your drive is attached, you are very likely shorting out
> the 7I43 outputs somehow in your wiring...
I guess another possibiity is trying to use pins set to open drain mode
to source current (you wont get much since the pullups are ~3K Ohm)
>
> Peter Wallace
> Mesa Electronics
>
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Peter Wallace
Mesa Electronics
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------------------------------------------------------------------------------
All of the data generated in your IT infrastructure is seriously valuable.
Why? It contains a definitive record of application performance, security
threats, fraudulent activity, and more. Splunk takes this data and makes
sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-d2dcopy2
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