Implement IO judgment in NGC files?

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chen1234
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02 Mar 2022 03:26 #236153 by chen1234

Implement IO judgment in NGC files? was created by chen1234

I've been having trouble writing G-code recently and was hoping someone could give me some hints.
I need to implement IO judgment in a .ngc file, such as the function of M66, but it can be implemented directly in G code
test.ngc:

...
if M101 == ture
...

Is there a way to program it directly in the NGC file?

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MaHa
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02 Mar 2022 07:12 #236156 by MaHa

Replied by MaHa on topic Implement IO judgment in NGC files?

You can use this in a ngc file

M66 P1 L0
#<ABC> = #5399
   o803 IF     [#<ABC> EQ 1]
             ......
   o803 ENDIF

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chen1234
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02 Mar 2022 08:11 - 02 Mar 2022 08:12 #236157 by chen1234

Replied by chen1234 on topic Implement IO judgment in NGC files?

thanks,MaHa
I have other little questions
How many pins can M66 define? I see in the documentation that there are 3 each for digital and analog signals, is there any way to expand this number?
Or how to combine this function with PLC?

Last edit: 02 Mar 2022 08:12 by chen1234.

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andypugh
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02 Mar 2022 08:40 #236158 by andypugh

Replied by andypugh on topic Implement IO judgment in NGC files?

You can increase the io using the "num_dio" parameter to the "loadrt motmod" command.

Depending on the structure of your HAL / INI files this might need to be done either as a change to the HAL file, or to a parameter read in to the HAL from the INI.

linuxcnc.org/docs/2.8/html/man/man9/motion.9.html

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MaHa
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02 Mar 2022 08:41 #236159 by MaHa

Replied by MaHa on topic Implement IO judgment in NGC files?

In checked my config, end of this line the amount of analog and digital inputs are set, if you need more than available by default.

loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[KINS]JOINTS num_aio=16 num_dio=8

I have used this only from hal

net cb11      pyvcp.checkbutton11   motion.digital-in-01

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chen1234
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02 Mar 2022 08:53 #236160 by chen1234

Replied by chen1234 on topic Implement IO judgment in NGC files?

Thanks ，andy, MaHa
I will try to expand the number of IOs.
I have a new question, I want to add PLC function, how can this PLC be used with M66?

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andypugh
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02 Mar 2022 14:03 #236175 by andypugh

Replied by andypugh on topic Implement IO judgment in NGC files?

A real PLC or a soft PLC (ie, ClassicLadder)?

I think that you would connect the PLC inputs and outputs to the same motion pins that you are already using, in the HAL layer.

linuxcnc.org/docs/2.8/html/ladder/ladder-intro.html

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