Re: [Emc-users] Help with Mesa 5i20 Card (Configuration Issues)

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Hello -

Its me again, still having problems ...

So I got Y and Z to jog, seems like the values for
FERROR for the X axis are not the same as those for Y
and Z in the /etc/emc2/sample-configs/m5i20/m5i20.ini

maybe that is not a big deal but I made them all the
same and still no jog on X-axis, getting following
errors.

My encoders have Index output but this is what I am
seeing:

bit       FALSE      Xindex
                         ==> axis.0.index-pulse-in
                         <== m5i20.0.enc-00-index
bit       TRUE       Yindex
                         ==> axis.1.index-pulse-in
                         <== m5i20.0.enc-01-index
bit       TRUE       Zindex
                         ==> axis.2.index-pulse-in
                         <== m5i20.0.enc-02-index

makes no sense ... I have tried swapping cables and
motors without any luck.  Help !

-ali

--- ali sayed <say...@ya...> wrote:

> Hi all-
> 
> OK, so I think I might have found the answer in the
> HAL Docs ...but I welcome further input from the
> list
> members.
> 
> Eric:
> 
> All of this is already configured correctly in the
> m5i20 configuration that is included in 2.0.5, but I
> checked it anyway to make sure, thanks for the
> response.
> 
> Peter:
> 
> I swapped the 12V supply with the 30V and checked
> the
> pins, they are low after hitting the F1, F2 sequence
> to turn on the machine. Thanks, the 7i31 is a big
> help.
> 
> Here is the part that made it work ...(HAL Handbook
> June 17, page 59)
> 
> (BIT) dac-<channel>-interlaced  ==> FALSE.
> 
> I have no idea what this really does but it seems to
> work, so I set these at the command line:
> 
> # set offset and scale so that +/-1.00 on output
> # signals is +/-10V at the physical DAC pins
> halcmd setp m5i20.0.dac-00-gain 10
> halcmd setp m5i20.0.dac-01-gain 10
> halcmd setp m5i20.0.dac-02-gain 10
> halcmd setp m5i20.0.dac-00-offset 0
> halcmd setp m5i20.0.dac-01-offset 0
> halcmd setp m5i20.0.dac-02-offset 0
> halcmd setp m5i20.0.dac-00-interlaced 0
> halcmd setp m5i20.0.dac-01-interlaced 0
> halcmd setp m5i20.0.dac-02-interlaced 0
> 
> I can jog the axis, except for X, might be a wiring
> issue, but no more following errors on Y and Z axis.
> 
> So in theory I should have gain set to 30 since I
> have
> a 30V supply ? or is that a bad idea.
> 
> 
> 
> --- "Eric H. Johnson" <ejo...@aa...> wrote:
> 
> > Ali,
> > 
> > By default, do you mean you are using the
> > configuration files in
> > /config/m5i20, or something else? One of the
> things
> > you have to do with the
> > m5i20 board is to enable the PWM. That is found in
> > the m5i20 configuration
> > in the m5i20_io.hal file, here:
> > 
> > # Connect amp enables to m5i20 dac enables
> > linksp Xenable => m5i20.0.dac-00-enable
> > linksp Yenable => m5i20.0.dac-01-enable
> > linksp Zenable => m5i20.0.dac-02-enable
> > 
> > The enables are in turn set in core_servo.hal
> here:
> > # connect the signals to the motion controller
> > linksp Xenable <= axis.0.amp-enable-out
> > linksp Yenable <= axis.1.amp-enable-out
> > linksp Zenable <= axis.2.amp-enable-out
> > 
> > If you are not getting TRUE on the amp-enable-out,
> > then you will not be able
> > to enable the m5i20 DACs (you can check this with
> > halcmd show pin). For the
> > time being, you could comment out the above lines
> > and then add:
> > 
> > sets Xenable TRUE
> > sets Yenable TRUE
> > sets Zenable TRUE
> > 
> > Also it looks to me (someone more familiar with
> > using this board for servo
> > control might correct me) as though 1.0 is the
> > maximum you will see on
> > halscope, because the OUTPUT_SCALE is set to 1.0.
> > Thus 0.0 => 0% duty cycle,
> > and 1.0 => 100% duty cycle.
> > 
> > Regards,
> > Eric
> > 
> > > Thanks for the response ...
> > > 
> > > What I meant was that the power is conncted to
> the
> > 7i30 motor 
> > > power connector and it is turned on.  The
> > > +5V for the encoders comes from the 50 pin
> > connector
> > > and that is why the encoders will always have
> > power.
> > > 
> > > So yes the power to the motors is on but the PWM
> > signal is 
> > > not going to the motors or is too low.  Also for
> > testing 
> > > purposes I have the 7i30 set to the 1A max.
> > setting.
> > > 
> > > As Peter mentioned in his response, 12V might be
> > too low, I 
> > > will try with 30V but I am affraid the results
> > will not be 
> > > too diffrent.  I suspect there is an issue with
> > the INI file 
> > > (I am using the default one for now).
> > > 
> > > I've been reading the HAL docs and there are
> some
> > things that 
> > > I will look at when I get back to my lab later.
> > Something 
> > > about setting OUTPUT SCALE for PWM drives.
> > > 
> > > I still don't get why halscope won't register a
> > signal 
> > > greated that 1V/div if I have MAX_OUTPUT set to
> 10
> > ?
> >  
> > 
> > 
> >
>
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