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Topics - Splint

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PoKeys / Porelay8 with Mach 4 and Pokeys57CNC relays not triggering
« on: May 08, 2022, 07:39:35 AM »
I'm trying out Mach 4 and I can get all of the relays on the Porelay8 board to trigger (the magnet activates and all of the LEDs light up on the board) when I test it in PoExtBus Smart but when I try it in Mach they won't trigger.

When I go into Mach 4 then Diagnostic>Pokeys Plugin-Polabs the status display appears and when I cycle the flood and mist buttons on and off the boxes in the status display switch on and off accordingly. It seems like its working theoretically but the relays won't activate and deactivate.

I did remap the flood and mist buttons to the relays on the 57CNC board and they worked fine there, but not on the Porelay8 board. Any thaughts on this?


PoKeys / Motors not turning
« on: October 23, 2021, 03:36:50 AM »

I'm bench testing a new setup running Mach3, Pokeys57cnc and a DMM-Tech 6 motor servo system. I can run the spindle from Mach and the e-stop works so it looks like Pokeys is working OK. The servo motors can run using the DMM-Tech tuning cable plugged into my laptop and when Mach is in control the motors are holding position but cannot be moved by jogging. None of the axes are inhibited in Mach. I've double checked the pin outs on the looms that run from pokeys to the drives and all is good. Any ideas what is wrong?


PoKeys / Porelay8 and Mach3
« on: October 21, 2021, 10:41:08 PM »

Anyone had experience setting up a Porelay8 on Mach3? The user manual is helpful to a point but I have not been able to get it functioning.

What I aim to do is to use the relays to control a pneumatic valve set to look after tool changes, coolant, extension and retracting a touch probe and camera.

I did find this https://www.youtube.com/watch?v=eFzRodtRJEc&ab_channel=CNCPRINT but it is in German and for Mach4 and there are some major differences between the menus in Mach 3 and 4. It really starts to look different around the 2 minute 13 seconds mark.


PoKeys / Connecting Pokeys57CNC with CNC4PC C4 Charge Pump
« on: October 14, 2021, 03:29:16 AM »

I'm looking for confirmation that I understand the wiring between these two units. From what I can see I run a wire from pin 45 on the DB25 connector to Pulse IN terminal on the C4 then from the Pulse OUT terminal on the C4 I run a wire to any of the ground terminals on the DB25 connector.

I would then need to go into the pulse engine status/control settings abd tick the Enable pulse engine, Enable safety charge pump output and make sure it is set at pin 45.

Is this correct?


Mach4 General Discussion / PLC to start cycle and rewind g-code?
« on: February 17, 2018, 08:22:14 AM »
Hi All,

Is it possible to have PLC operate the cycle start, rewind and reset  functiions?



I have a second parallel port installed on my PC which successfully runs the E-stop button, home and limit switches. I am trying to run a solid state relay off that port to power the spindle (on/off) using pin 17 and ground 19. I can run code with M3 and M5 commands which make the signal show as high and low on the diagnostics page but the measured voltage is a constant 3.2 for either condition.

I'm satisfied that I have the wiring and port and pin addresses correct yet I cannot make the pin follow what Mach is instructing it to. I do have an issue where the voltage is too low to trigger the relay but that is an entirely separate issue and will ultimately result in a replacement card, this is relating to what the pins on the breakout board are doing.

Any suggestions?


General Mach Discussion / Slow jog.
« on: January 22, 2014, 06:34:12 AM »
I've been adjusting the steps per value, velocity and acceleration and everything seems ok, but I do get the occasional warning saying I have one or more axis set up to operate beyond 25,000KHz. This does not appear to be an issue as I can rapid without any problem for quite some time, but there does appear to be an issue where the jog velocity drops to maybe one tenth of it's previous speed for no obvious reason. I tried rebooting the computer and checking the relevant settings, but have not been able to find a fix for this.

Any ideas?

It seems that some electrical noise has been triggering e-stop, home and limit signals on my router, so as suggested in the many threads associated with this issue, I put 0.1uF ceramic caps across the terminals at the break out board. Unfortunately this did not solve the issue.

Shielded wiring is also a recommended fix. Is there a way of shielding existing cables,or should I rip the lot out and replace it with shielded wiring

I haven't done anything with the debounce since I found the caps didn't fix the signal issue, I'll investigate that next. Just interested in suggested ways of dealing with this.

General Mach Discussion / Mouse freezes when USB device is plugged in.
« on: October 18, 2012, 06:00:07 AM »
I doubt that this has anything at all to do with Mach, but every time I plug a USB device into my computer the mouse freezes. I'm unable to copy any files onto my computer, at least via USB. I've tried a couple of fixes I found on the web but no success in resolving the issue so far. Anyone had any experience with this?



I'm still finding my way with Mach, and I'm not happy with the smoothness of my machine. It's in CV mode (the button on the screen is highlited green) and I changed the g-code from g61 to g64 but it still has very jerky movement, more noticable at higher speeds.

Is this something in the settings? I think the settings are default as I've only adjusted the motor tuning settings.


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