!need Help CNC6040Z USB Limit switch wiring!

Hi Schematicsman

if you have the jumper J1 set for using the boards +5V supply
you don't need to add any resistors - that's why I removed them from the original diagram

as to how you physically wire the switches it depends on what connectors you have fitted to the control box


very often you find "aviation" connectors are used on Chinese control boxes
the boxes having a number of holes for 4 limit switches and a probe
blanked off by a paper label when the connectors have not been installed

a photo of your box will help

if you fit four 2 pin connectors
then one pin on each connector is connected to the common ground
then printer port pins 10 ,11, 12, 13 can be connected to the remaining connector terminals
pin 15 can go to your E-stop switch

I will add more later when I return home

John

PS

this is the typical connectors found on Chinese control boxes
note – the danger of mains voltage on chassis mounting plugs !!!
Attachment 22893

from other posts
some other DIY options that have been used are
either pass the limit switch cable through a strain relief or
used a terminal block fastened to the box


Attachment 22894

Attachment 22895

once I know what you have and what method you want to use
either wire the limit switches directly to the breakout board or go via connectors mounted on the box
I will add more diagrams of the wiring

PPS
Attachment 22896

Attachment 22897
Hi john I would like to know How to wire 2 limits so when either one
Is pressed that axis stopes??? Which one Normally Opened
or Normaly Closed??? Can I use the ground from the pic I upload of my board that has that single black
Wire ??? Or does it need to come from what you have on your drawing???

Quote:

---

Originally Posted by Schematicsman

Attachment 22897
Hi john I would like to know How to wire 2 limits so when either one
Is pressed that axis stopes??? Which one Normally Opened
or Normaly Closed??? Can I use the ground from the pic I upload of my board that has that single black
Wire ??? Or does it need to come from what you have on your drawing???

---

If you are daisy chaining your switches together, ie connecting them in series then they need to be normally closed.

If you look at John's post #11 he shows you the limit switch cables.

as Clive said
wire N/C switches in series

it should be the safer option as the machine will stop if a wire breaks
as this is more likely than a two core cable being short circuited
(although it could happen if a cable is crushed)

the last diagram of post 11 is for 1 axis ,
you will need three pairs of N/C switches for the 3 axis

as mach 3 only homes 1 axis at a time you could connect all 6 switches in series and use just 1 input

Attachment 22903


John

Hi there John but your drawing has com and NO pin connected and mine is NC and COM pin on mini limit switches...
check my pic of 2 switches for one axis in series connected and tell me if I have wired it correctly???Attachment 22904

Then which one of the COM or NC(NO) is GND or +5V and which one signal???

also Can I use all ground connections from that free connector on the right side of the board near 24V that says::--->> C NO 0-10V GND-<<<---?????
Attachment 22906 on this pic??????

I'm confused

Quote:

---

but your drawing has com and NO pin connected and mine is NC and COM pin on mini limit switches...
check my pic of 2 switches for one axis in series connected and tell me if I have wired it correctly???Click image for larger version.

---

Where does it say that John shows com and NO? Do you have a multi meter? I suggest you read the post again. As the drawing clearly shows you the way it is wired.
With a multi meter is is very easy to check you have it OK. You can also check if the two grounds ie the 5V one and the one you referred to are indeed connected together. If you are not sure use the 5v ground

now I have seen the photo of your micro switch
I can see why you are confused

on my diagram the N/C contact is shown as the centre terminal
and on your switches the N/C terminal is at the opposite end to the common

Attachment 22907

John

PS
I can not find any details of the board to tell if the unused GND
terminal can be used as an additional Ground / common for your switches

Attachment 22908

you will have to check for continuiy with the switch common terminal

or use an additional terminal block to connect all the common switch wires together to a single wire from the switch common terminal


Attachment 22909

Hi,there Clive I was saying that Johns pic of two limit switches in Normally Closed connection at the top of this page looked different to my limit switches in NC connection. that's all I guess the the limit switches were different, but thank you both for being patient and very supportive,as I wouldn't even get this far.:)

Now My machine is a cnc6040Z USB 3 axis and I would like to know how and what I need to select from Step 1: of the installing of Mach 3.exe :::of this pic
Attachment 22913

And then from Step 2: after installation on this pic---->Attachment 22912

ect ect..thank you sorry to be a pain but i'm learning allot from you guys :))

Hi I suggest you read through the various manuals and installation vids first.

http://www.machsupport.com/help-lear...eos-tutorials/

http://www.machsupport.com/wp-conten...all_Config.pdf

assuming you have the USB motion controllers "plug in " installed so Mach3 works via the USB connection

to add the probe you will need to go into mach 3 ports & pins
and select input signals
Attachment 22951

about halfway down you will find the probe

john