Mesa 7i43-U-4 with 7i33 + 7i37

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14 May 2016 18:14 #74654 by Falmeida
Hello, This is my first post here. My name is Fernando and write from Brazil.

I'm trying to set my Board 7i43 to control a Discovery 308: 3 analogical servos, 3 encoders, 1 stepper motor for the 4th axis. I will also need GPIO 7i37.

I do not have the firmware for this application. How can I get?

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14 May 2016 21:30 #74657 by andypugh
You can convert the stepgen PWM and encoder pins to GPIO by disabling some of the instances.

So I think you should be able to use the SVST firmware for your card, but only enable one step-generator to use the other pins on the 7i37 as GPIO

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14 May 2016 22:37 #74661 by PCW
Replied by PCW on topic Mesa 7i43-U-4 with 7i33 + 7i37
Yes, the standard SVST4_4 config should work for this set of daughtercards
Note that step rate will be limited by the 7I37

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21 May 2016 17:11 #74914 by Falmeida
Thank you for the tips.

I uploaded the firmware SVST4_4 and seems to work.
I did the test probe encoders and manual turning the servo axis, I can see the signal change from false to true normally.

I tried to enable the servo and jog +10V can see this value on test probe (PC screen) but can not measure this value in corresponding analog port (7i33 board).

what am I doing wrong?

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21 May 2016 18:32 #74918 by Falmeida
I tested my 7i33 board. Is ok! The problem is my SGDL Yaskawa driver wiring.

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