Mesa 5i23/7i47 Wiring for Hydef plasma table

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24 Apr 2011 03:21 - 24 Apr 2011 05:32 #9294 by crmb
This is for a hydefinition plasma table retrofit based on a Komatsu KCR-0951 that we've installed Hypertherm's Hydefinition HD3070/HPR torch, Sensor PHC, and Mitsubishi J3 servo drives that we are running in positioning mode (configured for a step/dir signal) using a Mesa 5i23/7i47/7i37TA combination. The pcnconf assigned x-axis to pin 1/3 (step/gen) and 13/15 step/gen. Now 1 and 3 ended up being the TX4 / TX5 which wired up and perform flawlessly. 13 and 15 however seem to be RX1 & RX7, which are inputs? and aren't generating the correct output signals as far as I can tell. I am probably missing something simple, but I can't seem to get the signals to output correctly for the y-axis.

Help please!
Last edit: 24 Apr 2011 05:32 by crmb.

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24 Apr 2011 07:42 #9295 by crmb
I increased the number of step_gen=4 from 3, which gave me an additional pin assigment to use TX10/TX11 for the 4th step gen axis. The middle two step gens are assigned to RX blocks though and worthless. It seems like there needs to be a firmware built that directly supports the 7i47 as there is no way that I can figure out to get all 4 step gens to run off that board without building a custom cable and wiring the signals where they should go.

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24 Apr 2011 10:49 #9296 by Rick G
Hello,

Are you using the .bit file for the 7i47?
That should put all the connections where they should be.

For a 5i20 with a 7i47s and a 7i37ta I use ...
loadrt hm2_pci config="firmware=hm2/5i20/7i47s.bit num_encoders=1 num_pwmgens=1 num_stepgens=4"

And follow the wiring for the 7i47s in my case.

Rick G

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24 Apr 2011 13:59 - 24 Apr 2011 14:08 #9297 by PCW
For a plain 7I47 (not 7I47S) step configuration, the bit file would be named SVST2_4_7I47
This has 4 stepgens, 2 PWM/dir outputs and 4 encoders (with appropriate pin-out for the7I47)

BTW this bitfile may not be supported by pncconf, but you can just start with the hm2-stepper example HAL file and modify to suit your needs
Last edit: 24 Apr 2011 14:08 by PCW. Reason: additions

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