G51 fence reference to G901

Georgi Baltov · Post by **Georgi Baltov** » Thu, Aug 16 2007, 12:33PM

For the first time I decided to use the profile modeler on the CNC and create a custom shape there. Making the shape on eCabinets was some what a chanlenge but it's all done and clear now. I went to the CNC created a new tool group, generated the passes successfully and I wrote the code. I noticed that it uses a G51 reference and I test run it to see where it starts. Well it starts from the other side of the bed somewhere. I called Therwood programing support and I got some instrustions but unless I get it nicely written and explained I dont think I will be able to properly change everything. I usually use the G901 fence. But I also want to be able to use the G902 fence reference as well just because there's better suction inside the bed and because I will be able to lock the piece I want to run with some off-cuts around it. Thank you guys

Ryan Hochgesang · Post by **Ryan Hochgesang** » Thu, Aug 16 2007, 3:01PM

Hi Georgi,

I've attached some screen shots to help clear up the following information regarding fixture offsets used by our control, which work well for the profile modeler and control nesting. Please review the following information and attached picts, then let me know if you need additional assistance. You can reach me by email through: program@thermwood.com or phone: 1800 221 3865, ext. 247

You mentioned that when posting code through profile Modeler, that you are getting a G51 in cnc program for the Fixture offset, but would like to use the G901 and G902. You can use the same coordinates and offsets as G901 or G902 by selecting the G52 option in the Operation Defaults of Profile Modeler. To make this work, the following instruction will need to be followed:

First open the Profile Modeler and go into the Operation Defaults. Select the G52 option and place the number of the table you'll be accessing in the fixture offset table (The \"L#\" for G52 can range 1-100. Table can be accessed by selecting F4, F4 while at main Thermwood screen <THM software up to V6 or by selecting Edit, Fixture Offset, Fixture Offset Table <THM V7 and newer>) if popup pins or locating device is on other end of table, opposite x and y HOME, then you will need to place a check for the X and Y SHIFT option. As far as matching the G52L# offset to the G901 or G902 offset, you will need to access the \"Part Location Variables \"(located in the M999 macro) to copy the x and y values. There is more detail in the Thermwood 91000 manual on accessing information in the M999 macro. To find fixture offset locations, NC Reset cnc router, use Hand Held programmer or manual teach method to drive machine out and center router bit over intersection of fence location.

I hope this information has been helpful.

Georgi Baltov · Post by **Georgi Baltov** » Thu, Aug 16 2007, 4:33PM

Thanks for the information Ryan. I kind of followed my common sence and I got it running. I made G51 to corespond to G901 and G52 to corespond to G902. So everything worked out pretty good. You have done everything in the machine and the programing very user friendly.

I am not sure but I dont think that you can make the pins to come up. I used mastercam program to raise them up and then nailed my G902 square. Is that the only way?

Ryan Hochgesang · Post by **Ryan Hochgesang** » Tue, Aug 21 2007, 10:43AM

You can go into the SETTINGS of control nesting and select to have code written in cnc program to operate auto popup pins (if your machine has).

Take a look at pict. I attached for further reference.