Mesa 5i25+7i77 plug-n-go configuration

Not quite that easy for the 5i25 board with PNCconf.
Do to missing XML descriptions in the hostmot2 firmware repo.
work around here:
www.linuxcnc.org/index.php/english/compo...ew&catid=39&id=21670
also make sure you have the latest bug fix 2.5.1

Before I go charging in and screwing it up, what is 'the latest bug fix 2.5.1.?
I have the official release 2.5.1

cmorley, thank you,
I followed your link and installed the files.
I picked the 5i25 at I/O Control Ports/Boards.
There is no parallel port listed.
The 5i25 is listed under Parport Address Search as
01:08.0 DPIO module: Device 2718:5125
Subsystem: Device 2718:5125
Flags: fast devsel, IRQ 11
Memory at fbdf0000 (32-bit, non-prefetchable) [size=64K]

I changed the file/folder permissions to the same as the 5i20 firmware. Not sure whether it made any difference.

Skipping a few pages to Mesa0 Config-Board, selected 7i77x2, accept changes, a bunch of I/Os and SSerial tabs appear.
At 'Sanity Check', there is no 7i77 to choose though the 7i33 is checked automatically.
I need to study these tabs for a while.

ok no need to have a parallel port listed.
No need to search for the 5i25 in the address search.

If you found the 7i77 firmware in the combo box all is well.
there is no sanity check for the 7i77 - just uncheck the default 7i33.

oh and the released 2.5.1 is what i was talking of. -all good

Servos are enabled but don't move I have the following from the terminal:

steve@Steve-lathe-cnc:~$ linuxCNC
linuxCNC: command not found
steve@Steve-lathe-cnc:~$ linuxcnc
LINUXCNC - 2.5.1
Machine configuration directory is '/home/steve/linuxcnc/configs/HARDINGE-HXL'
Machine configuration file is 'HARDINGE-HXL.ini'
Starting LinuxCNC...
INFO CLASSICLADDER- No ladder GUI requested-Realtime runs till HAL closes.
joint 2 following error
emc/task/taskintf.cc 614: Error on axis 2, command number 116
joint 0 following error
emc/task/taskintf.cc 614: Error on axis 0, command number 143

Following errors are to be expected before the servos are tuned

But before tuning, the following preliminaries need to be working:

1. Do the encoders read correctly in the Axis GUI? (correct scale and direction)
2. Can you enable and disable the drives via LinuxCNC
3. Can you drive the motors in the expected direction by applying a small input voltage (pncconfs open loop test can help here)
4. At this point you can begin to tune. For tuning you will need to increase the FERROR and MIN_FERROR parameters for the axis you are tuning so you dont just get instant following errors
about 1 inch or 25 MM is a good number for these. Also its probably best to start with linear axis in the middle of travel so you have time to hit ESTOP if something goes wrong

John Thornton has a nice velocity mode servo tuning guide here:

gnipsel.com/linuxcnc/tuning/servo.html

I downloaded the latest from the buildbot and now I'm able to move the servos in pnccon. It is really nice to see something move. but when finish I get the following errors and can save and exit.

PNCconf encountered an error. The following information may be useful in troubleshooting:

Traceback (most recent call last):
File "/usr/bin/pncconf", line 8428, in on_complete_finish
self.data.save()
File "/usr/bin/pncconf", line 3514, in save
self.write_halfile(base)
File "/usr/bin/pncconf", line 2875, in write_halfile
self.connect_axis(file, 0, 'x')
File "/usr/bin/pncconf", line 1842, in connect_axis
pwminvertlist = self.pwmgen_invert_pins(self.pwmgen_sig(let))
File "/usr/bin/pncconf", line 1810, in pwmgen_invert_pins
pin = int(pinnumber[10:])
ValueError: invalid literal for int() with base 10: 'al0_1pin49'

Very sorry.

I pushed the fix

Chris M