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  5. How to reset 5221, 5222 and 5223 parameters (G54)?

How to reset 5221, 5222 and 5223 parameters (G54)?

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11 Dec 2017 23:49 - 11 Dec 2017 23:50 #102956 by nicokid
How to reset 5221, 5222 and 5223 parameters (G54)? was created by nicokid
Hi,
I save my coordinates G54 with:
G54 G10 L20 P1 x0 M100
G54 G10 L20 P1 y0 M100
G54 G10 L20 P1 z0 M100
These remain saved in linuxcnc.var and often I have to delete it.
What is the best way to reset these coordinates? I have problems especially when I use touch off with the z axis.

Thanks, Nicola.
Last edit: 11 Dec 2017 23:50 by nicokid.

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12 Dec 2017 01:41 #102960 by andypugh
Replied by andypugh on topic How to reset 5221, 5222 and 5223 parameters (G54)?
What does M100 do?

Why have a G54 at the start? (and why repeat it)

G10 L20 P1 X0 Y0 Z0
Is valid G-code too.
The following user(s) said Thank You: sou528

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12 Dec 2017 13:10 #102992 by nicokid
Replied by nicokid on topic How to reset 5221, 5222 and 5223 parameters (G54)?
Hi, I copied M100 somewhere:
#! /bin/sh
axis-remote --reload
exit 0

I use 3 separate lines because I have 3 separate buttons (x, y, z) in my gui.
Nicola.

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12 Dec 2017 13:58 #102996 by Todd Zuercher
Replied by Todd Zuercher on topic How to reset 5221, 5222 and 5223 parameters (G54)?
G10 L2 P1 X0 Y0 Z0 will reset the G54 offsets for XYZ back to 0.

Like Andy was trying to say The P after the G10 L2 (L20) command specifies the work coordinate system, and unless you specify P0 the current one selected is irrelevant so setting it before hand is not needed.

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17 Dec 2017 14:33 #103210 by nicokid
Replied by nicokid on topic How to reset 5221, 5222 and 5223 parameters (G54)?

G10 L2 P1 X0 Y0 Z0 will reset the G54 offsets for XYZ back to 0.

Uh, you're right, I've read the documentation better.

Like Andy was trying to say The P after the G10 L2 (L20) command specifies the work coordinate system, and unless you specify P0 the current one selected is irrelevant so setting it before hand is not needed.

OK! I got it.
With P0 I reset the current coordinates, while with the other numbers (P1, P2, ...) I reset the others (G54, G55, ...).

Another question: what is the difference between G10 L2 and G10 L20? The documentation says:
instead of setting the offset/entry to the given value, it is set to a calculated value that makes the current coordinates become the given value
I think I did not understand.:blink:

Thanks.
Nicola.

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17 Dec 2017 21:34 - 21 Dec 2017 14:04 #103251 by Todd Zuercher
Replied by Todd Zuercher on topic How to reset 5221, 5222 and 5223 parameters (G54)?
L2 sets the G5x offset to the values you specify. So X0 clears the X offset. L20 sets the current axis location to the value specified. Think touch off.
Last edit: 21 Dec 2017 14:04 by Todd Zuercher. Reason: Stupid typo error pointed out by nicokid below. thanks.

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21 Dec 2017 09:56 #103424 by nicokid
Replied by nicokid on topic How to reset 5221, 5222 and 5223 parameters (G54)?

G2 sets the G5x offset to the values you specify. So X0 clears the X offset. G20 sets the current axis location to the value specified. Think touch off.

I think you meant writing L2 and L20.
But I still do not understand the difference. What is the difference between these two commands?
G10 L20 P1 X0
G10 L2 P1 X0
In both cases I specify a value :blink:
Thanks.

Nicola.
The following user(s) said Thank You: Todd Zuercher

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24 Dec 2017 01:07 #103508 by andypugh
Replied by andypugh on topic How to reset 5221, 5222 and 5223 parameters (G54)?
One sets the #522x parameters to the given values
The other sets the #522x parameters such that the current machine position becomes the given values.

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26 Dec 2017 23:44 #103721 by nicokid
Replied by nicokid on topic How to reset 5221, 5222 and 5223 parameters (G54)?

One sets the #522x parameters to the given values
The other sets the #522x parameters such that the current machine position becomes the given values.

So in this case X0 works:
G10 L20 P1 X0

In this case X0 is wrong:
G10 L2 P1 X0
The right command is:
G10 L2 P1 X

I understood right?

Thanks and happy holidays.
Nicola.

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27 Dec 2017 00:04 #103722 by Todd Zuercher
Replied by Todd Zuercher on topic How to reset 5221, 5222 and 5223 parameters (G54)?
No, The X must have a number after it.
For example using this command to touch off the right side of the piece.
You would type G10L2P1X0, if you wanted that point to be 0 in your G54 work coordinate system.
If you were locating off a hole 1" from where you want the edge to be you could enter G10L2P1X1.

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  1. GCode and Part Programs
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  5. How to reset 5221, 5222 and 5223 parameters (G54)?
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