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a simple MDI move not working??
« on: October 31, 2012, 06:06:19 PM »
it was suggested that I check to see if I am actually moving as far as the DRO's say
when I put in G0X10 the axis moves from machine home to nearly the middle of the table
put the same in y axis it moves over to half way of the table...
it doesn't matter what length I put in it moves the exact same spot every time same
for both X and Y....I am set-up in mm's

what would cause this????

Offline BR549

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Re: a simple MDI move not working??
« Reply #1 on: October 31, 2012, 07:21:06 PM »
You do NOT use machine home for this move reference. You use  X0Y0(userHome) You move to a spot on the table then Zero X/Y. THEN make your MDI move of say G1X10 F10.  It should move from X0.000 to X10.000 AND that move should be 10mm if in metric or 10" if in imperial. Make SURE you are in G90 mode (absolute)

BUT if you want to do it your way then you need to set G91 to switch over to incremental moves. That way each time you call G1 X10 it moves 10 units to the right. Call it again and it moves 10 more units to the right.

(;-) TP
Re: a simple MDI move not working??
« Reply #2 on: November 01, 2012, 10:34:03 AM »
I been trying to figure out how to make sure I am in G90 absolute mode
I went to offsets and it says I am in G54 offsets...I didn't enter that it
must have picked that on its own....

how do I insure what mode I am in whether absolute G90 or incremental ??

Offline BR549

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Re: a simple MDI move not working??
« Reply #3 on: November 01, 2012, 10:55:58 AM »
Look on the main program screen upper right there is a MODE line that shows all the active modal values look for G90 for abs  and G91 for inc. They BOTH cannot be active at the same time.

From the MDI line just type in G91 then make your MOVE  G1 X10 F100 and it will be an inc move of 10.  WHen you are done make sure you switch it back to G90.

(;-) TP
Re: a simple MDI move not working??
« Reply #4 on: November 01, 2012, 11:37:29 AM »
let me ask,
when I am moving away from machine home should my DRO's
be reading in the negative or the positive...when I am at machine
home they all read + zero's and when I moving away into the table
they read in the negatives...this is right isn't it.....

thanks for help, I appreciate it...the instructional videos while I
appreciate them, they are confusing.....
Re: a simple MDI move not working??
« Reply #5 on: November 01, 2012, 12:22:21 PM »
okay,
I used the code that you send me
the moves were made now here's the crazy thing

instead of moving 10mm...it moved 10 inches....
the dro reads 254.0013 which practically right on 10 inches
the same if I use X12 it moves 12 inches and the dro says 304.800

the machine is set up in mm's

Offline ger21

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Re: a simple MDI move not working??
« Reply #6 on: November 01, 2012, 01:14:56 PM »
Try typing G21 in MDI.
Gerry

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