New Mill Build...Can I use LinuxCNC?

Yes you can have WIFI in addition to the Ethernet or you can also add a second
Ethernet connection for network access with a USB --> Ethernet Dongle

Ok great, thanks!

The 7i76E is on its way!!...Still going to grab a 24v PS, does the PS posted above look correct?...made a little progress on the multi piece aluminum t slot table, plan to mill the surface with the machine, it’s a semi permanent set up...they will bolt on from the bottom...they can be decked off several times, and swapped out for more aluminum or steel whenever necessary. Thanks, Andy

Received the board today, excited to get it wired up...just a quick question on limit switches. On my previous small router I used both work offsets and just finding X and Y zeroing and working from there. I don’t see my self using work offsets with this mill. My original plan was to just wire the switches in series and connect them to one input. I would never use them except when I make a mistake and exceed the travel of the machine... Can any body tell me a good reason for wiring home switches or limit switches individually, besides using work offsets?

Also in the wiring diagram posted earlier it shows the limit switches under “digital inputs.” The switches I am using are just standard mechanical switches so this naming seemed a little strange...I just wanted to verify that this wiring is still correct for my switches? Also on the old Chinese board one wire was wired to the input and one wire to a common terminal...this wiring diagram shows that leg being wired to field power which also seemed strange, and I also wanted to verify that? Thanks in advance, Andy

One reason to wire them individually is that if you do end up on a limit switch the software will tell you which limit switch you are on. Or, if one of the switches or wires fails and goes open LinuxCNC will tell you which axis. I also use mechanical micro switches. Just wire them as shown for the digital inputs.

John

tommylight wrote:

Mayberry Customs wrote: ...can anyone elaborate on the difference between the 7i76e and the 7i96.

Since i never used a 7i96 i am not best suited to reply, but as far as i know 7i96 has less I/O and is better suited for plasma while 7i76E has everything needed for a mill and then some.

I have used both the 7I96 and 7I76e. I would say for 95% of all cases a 7I96 will do just fine. The main difference is the lack of an analog spindle output and less overall I/O pins on the 7I96. But if you have a VFD driven spindle you should drive that using modbus anyway, unless your VFD driver is 40 years old... As for pins, how many do you need? There is enough for XYZ end stops and emergency buttons on the 7I96.