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send var to pyvcp

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7 years 1 month ago #144559 by sergiop
send var to pyvcp was created by sergiop
One question, I want to send the value of a variable # 20 to a pyvcp pin to show a number, how do I do ??

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7 years 1 month ago #144574 by pl7i92
Replied by pl7i92 on topic send var to pyvcp
depending on system you are you can do this via a Mcode
or using a INI Var
You can output the value of a parameter from G-code to a motion.analog-out HAL pin, and show that in the PyVCP.

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7 years 1 month ago #144584 by sergiop
Replied by sergiop on topic send var to pyvcp
I am making an engraving system and the idea is to see the serial number before executing the program (the serial number is stored in a variable)

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7 years 1 month ago #144600 by pl7i92
Replied by pl7i92 on topic send var to pyvcp
as the serial number is to be engraved
you shoudt see it on the screen as gcode

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7 years 1 month ago #144605 by sergiop
Replied by sergiop on topic send var to pyvcp
yes, but the surface to be engraved is irregular and it is difficult to see it from gcode

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7 years 1 month ago #145354 by andypugh
Replied by andypugh on topic send var to pyvcp
You would need to send your G-code variable #20 out to HAL using M68
linuxcnc.org/docs/2.7/html/gcode/m-code.html#mcode:m68
Then connect motion.analog-out-00 to the PyVCP input pin.

(G-code can (unreliably) read HAL values, but can't directly write to them.)

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