Changing M5i20 Output signals

[TZak]

Ok getting closer to getting this machine working however.

Here is my situation.

I have EstopWrite hooked up to a relay to my amps. So if there is a failure to the system power is stopped to the amps. At least that what the comments are on the mesa_io.hal file tell me. However I am getting no output signal on m5i20.0.out-07. Please if someone has an idea of how I can hook this up correctly it would be appreciated. Or should I connect this to a different output.

Here is the current area of the code that I am trying to modify.

# Connect e-stop write/sense to I/O controller.
#
# The estop from the opto module should be jumpered to one of the
# m5i20 estop pins. This will notify the motion of the estop condition
# and it will zero the DACs and turn off all output even if the PC
# has crashed.
#
newsig EstopSense bit
newsig EstopWrite bit
# create a signal for the estop loopback -- remove for external
#linkpp iocontrol.0.user-enable-out iocontrol.0.emc-enable-in


# use this if you have an external estop switch
#linksp EstopSense <= m5i20.0.estop-in-not
linksp EstopSense <= m5i20.0.in-15-not
linksp EstopSense => iocontrol.0.emc-enable-in
linksp EstopWrite => m5i20.0.out-07
linksp EstopWrite <= iocontrol.0.user-enable-out


Also does anyone know how to invert a output signal on the mesa. I also need to change the spindle output from 3.5v at startup which it is now, to 0v. And then when I run the program my relay can turn on the spindle.

Here is that code from the mesa_io.hal

# Connect spindle fwd/rev to I/O controller.
newsig SpindleFwd bit
linksp SpindleFwd => m5i20.0.out-00
linksp SpindleFwd <= motion.spindle-forward

The current system is running emc2 2.2.8 on Ubuntu 8.04

I hope this makes sense and someone can help.

[DonnieET]

Hi

I'm fairly new at this too. Are you getting any outputs? I haved a problem with the watchdog not get set the file I started with had watchdog commented out.

On inverting the output is something like this

Setp m5i20.0.out-00.invert 1

Mine is a little different in that I use the 5i23 with a 7i33 and 7i37 card and the hostmot2 driver were you have the orginal hostmot witch I should have used.

Donnie

[123CNC]

Bringing back fond memories.

I am not using HOSTMOT2, rather the default (older) EMC 5i20 configuration. To invert an input just add '-not' to the signal.

Here are the modifications I made to make a functional e-stop.

# Connect amp enables to motion controller.
linksp Xenable => m5i20.0.out-03
linksp Yenable => m5i20.0.out-09
linksp Zenable => m5i20.0.out-04

# 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

# use this if you have an external estop switch
linksp EstopSense <= m5i20.0.in-15-not
linksp EstopWrite <= m5i20.0.in-15
linksp EstopSense => iocontrol.0.emc-enable-in
linksp EstopSense => m5i20.0.out-07

I am not using the watchdog.

The amp enables get tied into the internal e-stop logic. I also tie the amp's ac power to the m5i20.0.out-07 signal, physically. The enables only should cover you, but I like to kill power all the way down to life support on an e-stop, i.e. controller only thing alive.

In my case, I don't believe the EstopWrite has any functionality.

This part just didn't make any sense to me,
linksp EstopWrite => m5i20.0.out-07
linksp EstopWrite <= iocontrol.0.user-enable-out

[DonnieET]

With Hostmot2 you have no choice on the watchdog, pet it or die.

[Seb]

It's a bummer that first example hostmot2 config had the watchdog commented out in the .hal file... I think that confused lots of folks.

The new hostmot2 configs in 2.3 all have the watchdog working right.

[123CNC]

With Hostmot2 you have no choice on the watchdog, pet it or die.

How about, 'my watchdog doesn't bite...that's not MY watchdog.'

The last post sounds like the 'watchdog' Donnie was referring to got hauled to the pound.

I have a 5i23? board waiting in the wings for a future install on another machine, but want to allow others the golden oppurtunity to blaze a new trail. So PLEASE keep us updated with your journeys.

[DonnieET]

123CNC

The thing about that watch dog, he was one of the silent type never heard or saw him just felt the bite

Donnie

[TZak]

Ok I have an update

I figured out how to do the invert output

setp m5i20.0.out-00-invert 0 or 1

thanks everyone for the help


so I have all my safety signals working correctly and also the spindle. The problem now is I am not get a PID on the X and Z channels. I have checked and I am just getting a High signal on the X and Z.

I know all my amps are working as I have switched the working y axis to the two other channels and it works.

The only thing I can think of is the mesa 5i20 board has a problem. Mind you I am getting all the other outputs and inputs working on it? If someone knows how I can test the card to see if it is in working order. I know all my settings work as I have had this system working to cutting parts.

Again help is always appreciated

[chester88]

Here is a test panel:
http://wiki.linuxcnc.org/cgi-bin/emc...vcp_Test_Panel

[TZak]

How do you set up the test panel correctly?

[PCW_MESA]

Ok I have an update

I figured out how to do the invert output

setp m5i20.0.out-00-invert 0 or 1

thanks everyone for the help


so I have all my safety signals working correctly and also the spindle. The problem now is I am not get a PID on the X and Z channels. I have checked and I am just getting a High signal on the X and Z.

I know all my amps are working as I have switched the working y axis to the two other channels and it works.

The only thing I can think of is the mesa 5i20 board has a problem. Mind you I am getting all the other outputs and inputs working on it? If someone knows how I can test the card to see if it is in working order. I know all my settings work as I have had this system working to cutting parts.

Again help is always appreciated

Our experience is that a failed (damaged by excessive I/O voltage) 5I20 card will almost always completely fail (will not even configure). Having just a few bad I/O bits is possible but really unlikely. If you can configure the card and the majority of I/O works, It is most likely your problem lies elsewhere.

If you can boot DOS or Windows (requires driver installation) on your test computer, we can supply a GPIO or loop-back test program. Or you can send the card back to us for evaluation and repair/replacement if needed.

Another way to check for open/damaged I/O pins is to use a Digital Volt Meter (DVM) that has a diode check function. Unplug the 5I20 card from the PC and remove all 50 pin cables, then with the DVM set to diode-check function, connect the positive DVM lead to 5I20 ground and check each of the I/O pins. They should all have similar voltage drops (~.5v), a bad pin will normally show open or shorted (higher or lower than a diode drop voltage) You are checking the I/O protection diodes in the FPGA

[TZak]

if you could let me know how to get a test program that would be great.

I have downloaded the support software on the mesa electronicssite, however Im not exactly sure how to test the board,

I have a spare windows machine that I can check it on I just need to know how to configure the software to test it.

If you could let me know what I need that would be great.

thanks.