Centroid Community CNC Support Forum

Hi

I am trying to sort out the 4th axis on my machine.

Using a DC1 in conjunction with an MPU11/dc3iob configuration.

The motor and encoder on the axis spin fine, I have connected the "zero setting switch" on the 4th axis back to the com and Lim1 connections on the DC1.

The DC1 Manual states:

If limits are required, it will also be necessary in most cases to run the limit switches in parallel to PLC
inputs to provide feedback to the control.

Please can somebody who has this working, explain which terminals on the dc3io I need to connect in parallel.

Also what connections would I use to drive a solenoid air brake on the spindle and the inputs to confirm the brake status ?

Finally, do I need to modify the M92 macro to home the 4th axis or is this already implemented ?

Thanks for any help that can be provided.

Paul

Duuh !!!!

Woke up this morning and at least I can now read the connection diagram and will try the DC3IO connection clearly labelled Rotary Home input (30) and Rotary Clamp ack input (31).

Also the DC3IO connections for Rotary Clamp NO , Common and NC.

Paul

Hi

Nearly there.

But....

I now have the 4th axis moving as it should but whilst all the other axes home with M92 and move off the stop, the 4th axis / DC1 hits the homing switch and stops, it won't then move back off the limit.

I've tried over riding with the dip switch but then it just doesn't recognise the switch at all.

Any ideas ?

Thanks

Paul

Paul,

If you can send us a report to tech@ajaxcnc.com we can check and make sure all your parameters and settings in software are set correctly. To generate a report, from the main screen press F7-Utilities, F7-Report, and then choose where to save it. We would just need the report.zip created.

Hi

Does that work with Mach3? or is it a CNC11 function ?

Thanks

Paul

That is a CNC11 only function. Scott is our Mach3 expert. I have notified him about this thread.

Paul,

Have you tried setting direction reversal on the 4th axis and/or swapping the +- input wires?