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Messages - magicniner

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General Mach Discussion / Re: help with hp lap top running cnc controlor
« on: October 18, 2015, 05:17:47 AM »
The Mach3 driver takes over full control of the local parallel port and this is how it can change and read the status of individual pins, the USB to parallel hardware and software creates a local virtual port which Mach3's driver can take over but the hardware and software on the other side of the virtual port is out of sight to and not controlled by Mach3, is designed to read and write full data bytes on the port pins, and doesn't replicate the required pin states and timings needed for CNC
There are PC Card parallel port adapters available which give a PCI parallel port on laptops without one but they aren't cheap and I suspect you'd be better off putting the money into an external motion controller,
 - Nick

General Mach Discussion / Re: 4th Axix
« on: October 17, 2015, 03:43:13 PM »
For a fourth axis you just need 4-axis G-Code, your CAM should be configurable for this,

 - Nick

General Mach Discussion / Re: machine not cutting as simulation.
« on: October 09, 2015, 02:00:56 PM »
then you need to check which post processor you are using in artcam. 

To ensure it's generating a G21 in the header for metric or a G20 for imperial?
As whatever you have Mach3 set to then a G21 or G20 command will override this?

General Mach Discussion / Re: Mach3 connect to RAMPS 1.4
« on: October 07, 2015, 03:57:37 PM »
Mach3 uses the serial port for communication to external devices and the parallel port to control motion via a BOB & stepper drivers, USB and Ethernet motion controllers require a plugin from their manufacturer.
Are you trying to get motion control data out of the serial port?

General Mach Discussion / Re: machine not cutting as simulation.
« on: October 07, 2015, 09:42:29 AM »
When requesting assistance with a specific problem it's always helpful to give full details of any hardware and software involved.
That way you're not forcing those reading your post to help to make guesses or assumptions, with the added advantage that anyone with specific experience of your kit may recognize the issue and comment, rather than just assume they can't help and move on,

General Mach Discussion / Re: DDSM3_V5.0 (USB controller)
« on: October 04, 2015, 02:09:37 PM »
If no one here can offer any help, you may need to refer to the manufacturer.

General Mach Discussion / Re: PC thrown a wobbly?
« on: September 30, 2015, 03:45:42 AM »
It could be that your new PC has a Parallel port with 3.3v logic which won't run your BOB.
Older PCs had 5v PPs, newer ones have 3.3v but there are PP boards that run 5v which you can fit to a newer PC,

 - Nick

General Mach Discussion / Re: Wiring Limit Switches
« on: September 30, 2015, 03:32:01 AM »
That sounds like your BOB should be passing some signals to the parallel port, what's happening to the pin LEDs on the Diagnostics tab in MACH3 while you're switching on & off?

You mentioned getting signals on inputs which weren't being actuated, have you checked the readings on 12 and 13 whilst switching 11 to be sure that they are staying high?

When you actuate a switch you are making or breaking a circuit which here is pulling an input low, technically speaking both wires are carrying the signal and only convention, not functionality, dictates which way around you connect the red & white wires.

It's conventional to use common and normally closed connections on the switches and have the circuit open when the limit switch is actuated, that way in the event of a broken wire or connection you get a limit event rather than not knowing there's a problem until a crash tells you a switch isn't working,

 - Nick

General Mach Discussion / Re: Wiring Limit Switches
« on: September 29, 2015, 05:27:24 PM »
If your switch is connected to the BOB 5V and BOB input check for voltage across the switch when closed if you think it may be causing voltage drop, if there's no drop across the switch and you are getting less than 5v at the input then the input may be sinking enough current to cause the board's 5v supply to drop, kinda guessing without details for the BOB though,

 - Nick

General Mach Discussion / Re: Run Inhibit - Based on Input
« on: September 29, 2015, 04:53:30 PM »
I don't use custom buttons but I've read the documentation and you can replace the code behind many buttons in Mach3

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