Moderator: twehr
iGull wrote:The problem is to do with the system zero - I have my stage zero at the top left hand side and the page zero also at the top left hand side.
I have the origin currently set at 10mm x+y away from stage zero.
Everything operates in the correct sense.
However, if I draw say a 50mm rectangle (it's own ref pos is top left) and move it to say 100mm,100mm on the lasercad 'page', download it to the dsp, it always draws it at the origin, not at it's actual position ????
Further, when the system is powered up, it drives to the home switches, then goes to it's last origin (wherever that may have been), not a preset position of (say) 10mm offset from stage zero.
I didn't understand what was happening when I first powered it up, it homed correctly, then screamed across in X at breakneck speed with me fiendishly looking for the off switch Surely this is not the normal operation ? (I'm assuming that the test technician had set this before despatch to catch the unwary )
twehr wrote:In one of the control panel menus, you set whether you want the the output position controlled by the software (what you are expecting) or the control panel origin. Obviously, it is currently set to the latter. Change it to the software positioning and it will as you were expecting.
twehr wrote:There is also a menu in the control panel that lets you set where you want the head to move to on startup. Set that according to your wishes.
iGull wrote:Thanks for the speedy reply Tim.twehr wrote:In one of the control panel menus, you set whether you want the the output position controlled by the software (what you are expecting) or the control panel origin. Obviously, it is currently set to the latter. Change it to the software positioning and it will as you were expecting.
OK, setting it to 'software origin' in the LCD menu allows this, thanks. However, it causes other issues ...twehr wrote:There is also a menu in the control panel that lets you set where you want the head to move to on startup. Set that according to your wishes.
I've searched, but can't find this elusive setting
I've plugged in a couple of well used origins into the origin1 and 2 settings on the LCD. It would be nice at boot up to have it choose one of them.
Maybe I need to change my operating strategy - I'm so used to knowing EXACTLY where the head will go if I reset it .
Having a 'software origin' creates a new origin issue in that it now grabs this origin as the latest and greatest - however, maybe as I said, I need to rethink the way I use this.
The important part is that at switch on, it moves to a consistent fixed position.
Cheers
Neil
iGull wrote:Essentially, what I am looking for is a 'scenario 3' I just want to ensure that the head parks itself about 10mm away from mechanical stage zero when it is powered up - I don't want it flying off to some previous unknown datum that has been set. There are a few reasons for this - I use various jigs that can interfere with the mechanics of the head, and if I forget and leave them (and other stuff) lying about on the table after it is powered down, I don't want the system to go flying into them. Besides, it makes good operational sense to have the system initialise itself into a known state at power up.
I'm really quite surprised that there isn't a checkbox to tick that says 'move to nn,nn at startup' - I can't think of any of the cnc software I have that doesn't do that in some way.
...
Regarding bugs and feature requests for LaserCAD, where is the best place to do this ? There is a forum at Lightobject of course but no-one seems to be interested in improving the software? I have a bug list that is at least ten line items - some of them quite 'serious' (under normal circumstances that is - stuff I would get my backside kicked for if I had written it ). I also have a feature list that is longer LOL. Having played with a few of the other software controllers, I think LaserCAD is well down the feature/bug list sadly. It would be nice to get it up to the top of the list - I'm sure it would be in Marco's interest ?.
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