I am testing a 7i80.  The hardware encoder counters will read step/dir.  
I am using the position and velocity output for plotting and calculating 
acceleration.  (so - I just have one linuxcnc setup as if I had 
'step/dir' encoders hooked up to it.)

sam



On 02/25/2014 04:16 AM, Mark Wendt wrote:
> On Mon, Feb 24, 2014 at 11:03 PM, sam sokolik <sa...@empirescreen.com>wrote:
>
>> I am surprised people still put up with me...  I do have a lot of help
>> from the community.  The compact 5 configs using the latch and dual
>> stepgens would not have been possible if not for Jeff and Chris's
>> smarts..  (I am the big picture guy usually...)
>>
>> As far as machs acceleration violations.  I am pretty confident that
>> they are real.  (again unless I am doing something wrong)  If you want
>> to see some huge violations - run the tort.ngc program.  It has lots of
>> diabolical motion.  (granted - it is diabolical) I think though you
>> should be able to throw  any gcode to a control and is should process it
>> correctly.
>>
>> g21
>> G0 X0 Y0 Z20
>> G0 X5.394910 Y13.495489 Z20.332291
>> G19 G2 F500 (225 29) J5.656854 K5.656854 X10.394910 Y26.080547 Z29.989145
>> G19 G2 (75 14) J-0.258819 K-0.965926 X6.894910 Y26.787653 Z29.282038
>> G17 G2 (329 285) I-4.330127 J2.500000 X3.858878 Y24.458024 Z31.282038
>> G0 X0 Y0 Z20
>> m30
>>
>> when run through mach and logged shows this
>>
>> http://electronicsam.com/images/KandT/testing/MachViol.png
>>
>> that is 100 in/s^2 when it should be obeying 30.
>>
>> This is what it looks like
>>
>> http://electronicsam.com/images/KandT/testing/MachViol1.png
>>
>> sam
>>
> Sam,
>
> How are you getting LinuxCNC to monitor and log Mach's processes?
>
> Mark
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