lathe spindle question

[midy]

When switching from auto spindle control to manual, the software sets spindle speed to zero (or very low) Is there a parameter to make it stay at 100% ? Small problem I know but would save pressing the button every time I switch.
cheers

[cncsnw]

That is a function of the PLC program.

Typical PLC logic is like this:

Code: Select all

;--Adjust spindle override when entering manual or auto spin mode
;Set the override value to 100% when spin auto mode is first selected
IF SpinAutoManPD && !SpinAutoModeLED
  THEN SV_PLC_SPINDLE_KNOB = 100,
       SET SpinAutoModeLED

;Set the override value to 10% whenever manual mode is entered
IF SpinAutoManPD && SpinAutoModeLED
  THEN SV_PLC_SPINDLE_KNOB = 10, RST SpinAutoModeLED

As you can see, it sets the spindle override percentage to 10% on an auto-to-manual mode switch. This results in a speed that is 5% of the maximum RPM for the current spindle range (10% of half speed).

You can change that behavior to whatever you want, by changing the second SV_PLC_SPINDLE_KNOB assignment, saving your changes, and recompiling the PLC program.

[midy]

Ok, I think I get what to do but not sure where to find this piece of code to change it?

[cnckeith]

default is 50% of max RPM. this is a safety feature so spindle doesn't go to max rpm when you switch to manual.

what is your max rpm set to for this machine? post a fresh report.zip so we can see how you have things setup.

[midy]

When switching from auto spindle control to manual, the software sets spindle speed to zero (or very low) Is there a parameter to make it stay at 100% ? Small problem I know but would save pressing the button every time I switch.
cheers
I never did get this sorted

;--Adjust spindle override when entering manual or auto spin mode
;Set the override value to 100% when spin auto mode is first selected
IF SpinAutoManPD && !SpinAutoModeLED
THEN SV_PLC_SPINDLE_KNOB = 100,
SET SpinAutoModeLED

;Set the override value to 10% whenever manual mode is entered
IF SpinAutoManPD && SpinAutoModeLED
THEN SV_PLC_SPINDLE_KNOB = 10, RST SpinAutoModeLED

Can somebody tell me what/how and where to do with this code please to get my solutuion?

[suntravel]

You have to learn to work with the PLC, edit and compile....

Easy to implement the code from Marc if your NP++ is set up as recommended

Uwe

[midy]

I guess it would help if I knew what the PLC is? Or how to find it?

[suntravel]

Related reading:

https://www.centroidcnc.com/centroid_di ... manual.pdf

The file to edit is acorn_lathe_plc.src in the cnct folder

Uwe

[midy]

Thanks, thats what i was after

[midy]

Oh, I'm not sure if re-compiling is above my pay grade. I've managed to make the change in the code though but not sure about compiling...hmm