Hi Peter
Yes, the dro reads "0" but the travel was more than the requested
amount. In one direction only.
The process is like this:
- Home the x axis
- G0 X6000
- Measure the travel = 6000
- G0 X0
- measure the travel = -70
On 2013/05/04 06:55 PM, Peter C. Wallace wrote:
> On Sat, 4 May 2013, Marius Liebenberg wrote:
>
>> Date: Sat, 04 May 2013 09:08:40 +0200
>> From: Marius Liebenberg <[email protected]>
>> Reply-To: "Enhanced Machine Controller (EMC)"
>> <[email protected]>
>> To: [email protected]
>> Subject: [Emc-users] Creep in X axis
>>
>> Hi All,
>> I have a problem on a machine that is confusing me (not to difficult to
>> do these days). It is a servo system using mesa 5i23 and 7i33 cards. I
>> have calibrated the x axis and during testing I find that the x axis
>> will go from the home position (using G0 x6000) to the correct distance.
>> Then when I say (G0 x0) it will go to x-70. It has a linear overshoot
>> across the range but just in one direction. Now from that same position
>> if I go (G0 x6000) it will travel exactly 6000mm. So it would seem that
>> the calibration figures are correct.
>> I did the PID tuning and it is pretty close to perfect. Any suggestions
>> where to look?
>
>
> Are you saying the physical position overshoots by ~1% (and the DRO
> reads 0) when you do the G0 x0?
>
>
>
>
>
>
>>
>> --
>> Regards / Groete
>>
>> Marius D. Liebenberg
>> MasterCut cc
>> Cel: +27 82 698 3251
>> Tel: +27 12 743 6064
>> Fax: +27 86 551 8029
>> Skype: marius_d.liebenberg
>> Skype Me^(TM)! <skype:marius_d.liebenberg?call>
>> Get Skype <http://www.skype.com/go/download> and call me for free.
>>
>>
>>
>>
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>>
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>
> Peter Wallace
> Mesa Electronics
>
> (\__/)
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--
Regards / Groete
Marius D. Liebenberg
MasterCut cc
Cel: +27 82 698 3251
Tel: +27 12 743 6064
Fax: +27 86 551 8029
Skype: marius_d.liebenberg
Skype Me^(TM)! <skype:marius_d.liebenberg?call>
Get Skype <http://www.skype.com/go/download> and call me for free.
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Tested on: 2013/05/05 08:27:40 AM
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