Hi!

I will try to post this again, my first post seems to have crasched when I uploaded some pictures to it.


I recently bought the C3 - Index Pulse Card which I will use for spindle speed control into Mach3.
But how do I get the signal into the PC and Mach3? Can I just open the parallelport-cable cover and solder the wire to a free input pin and set the right pin into Mach3 settings?

I have a Optimum CNC controller III, http://www.optimum-machines.com/products/cnc-pc-controls-complete-and-adapter-kit/6/cnc-controller-iii-and-vi/index.html, and it does not have any inputpins / connectors to it.

This is what the controllercard looks like inside, it also have the cards for each axis and the main power supply. Is there any chance that I can solder the signal from the C3 somewhere into the controller?

Regards
  Per

 You could do that but are you sure there are no inputs internally? What are the CN1/2 ETC?
I tried to download the manual from their site but  just got an error.
Hood

The CN1, CN2 and CN3 is where I connect the cards for each axis.

I have the manual and the only useful info I get for the parallel port is this:

PinNo
2 - Direction X-axis
3 - Cycle X
4 - Direction Y-axis
5 - Cycle Y
6 - Direction Z-axis
7 - Cycle Z
8 to 24 - Free, Not assigned.
25 - DC, earthing

Regards
  Per

Pins 10 TO 13 & 15 are inputs to Mach. So anyone of those pins can  be used for feeding the  signal back to the PP provided they are not in use.

RICH

Just to be sure...
So you mean that I can open the cover for the parallelport cable, solder the cable from the C3 to pin 15 for example, and use pin 15 in the settings in Mach3?
If the pin 15 is not in use of course.

Yes, the signal from the c3 board is being sent form c3/pin 15 to the cable pin 15 on one end of the cable and then the other end of the cable is attching to pin 15 on the PP.
Makes sure pin15 is pin15 at each end of the cable.....straight thru cable.
Suggest that you first check that there is a voltage change coming form c3 / pin15 before you do any soldering.
ie; no signal out of the C3 would mean no signal to the PP
RICH

I will try this very soon.
Thank you for all your help ...

Regards
  Per

Hi!

I have installed my C3 and it works well. I get good RPM readings from the spindle into Mach3.

But when I try to cut threads it will not move at all when I get to the G76 line. I have tried alot of different settings; differnet values on Index Debounce, different setting on the Spindle setup under Ports and Pins etc...
When I am at the diagnosticspage the Index is working but the Wait for trigger and Threading is not marked.

I have read the settingssection in the Mach3_Threading manual.

There are two jumpers on the C3 board; Active low or Active high output signal and TTL or Open collector output signal. What is this? Is there any settings there that might chance my results.

Any other suggestions?? This is really freaking my out ...

Regards
  Per

Do you have a licence?
Attach your xml and I will look through your config to see if there is a problem with it.
Hood

Yes I have a licence. I read that threading was avalible in demomode.

Here is the xml, thank you for your help.

//Per