Simple question…

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Cohbra11
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Simple question…

Post by Cohbra11 »

I am new to the centroid controller, but I also have a Tormach which I am more familiar with. What I am trying to figure out is why I can issue an MDI command to Z0 with two different tools, each with different Z offsets, and the machine doesn’t move in Z at all? What am I missing?

For example:

G0 T1 Z0
or
G0 T2 Z0

T1 and T2 are more than 1/2” different in length, but there is no movement.

Thanks in advance for your help.

B
cnckeith
Posts: 7165
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Re: Simple question…

Post by cnckeith »

hello. do you have a mill, lathe or router?
i'll assume a mill.
using MDI

G43H1

will activate height offset value for tool 1
it is modal, then every move will be using that offset until you change it (which can also be done in the part setup menu)
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
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Cohbra11
Posts: 5
Joined: Sun Nov 10, 2019 8:44 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Simple question…

Post by Cohbra11 »

Awesome, thank you for your help!
tblough
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100327
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7804732B977B-0624192192
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Re: Simple question…

Post by tblough »

Point to note. Just issuing the G43 Hn will not cause Z to change position. The Z offset information will be added in the next commanded Z move.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
cnc_smith
Posts: 237
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Re: Simple question…

Post by cnc_smith »

tblough wrote: Tue Jan 25, 2022 8:55 am Point to note. Just issuing the G43 Hn will not cause Z to change position. The Z offset information will be added in the next commanded Z move.
For example when you turn the height offset on for the mill with a G43 H2 and there is an offset value in for that tool, say H2 has -2.0000 value, the machine does not move, but the DRO updates to the position that the tip of the tool would be at with that offset on. Example DRO displayed Z4 with height offset set to H0. Issuing a G43 H2 the DRO would change to Z6 and the machine would not move. In MDI you issue a Z4 after turning the height offset on the tool tip would go to the Z issued in MDI. Or If running the program the tool goes to that Z.

Side note: The Lathe works the same way using the T command. Z does not move, it just up dates the DRO when the T command is issued for the tool with the offset.
Dana

When requesting support, please ALWAYS post a current report.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
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