Hello Guys

I have Mach4 - latest version - going through an Ethernet Smooth Stepper with their latest plug in, driving my spindle through a PWM signal.
The motor behaves wonderfully and seems to be very accurate to the commanded speed.
I have an index input signal from a slotted optical switch which I also believe works well.

My trouble is wildly varying spindle speed read out on my screen. When I look at the machine diagnostics page I see the Spindle Feedback Ratio changing constantly - it is set to 1 in the config settings and I just want it to stay at 1.
Is there any way it can be locked at 1?

Thanks
Steve

Yup....... that will be updated soon but you can edit your screens PLC script now to fix it if you want to.

--Change this ***********************
-------------------------------------------------------
--  Set Feedback Ratio DRO
-------------------------------------------------------
--local spindlerpm = scr.GetProperty('droSpindleRPM', 'Value');   
--local truerpm = scr.GetProperty('droTrueRPM', 'Value');   
--local feedbackratio = (truerpm / spindlerpm);   
--scr.SetProperty('droFeedbackRatio', 'Value', tostring(feedbackratio));

--To this ********************************
-------------------------------------------------------
--  Set Feedback Ratio DRO
-------------------------------------------------------
local range, rc = mc.mcSpindleGetCurrentRange(inst)
local fbratio, rc = mc.mcSpindleGetFeedbackRatio(inst, range)
scr.SetProperty('droFeedbackRatio', 'Value', tostring(fbratio))



Thanks Mate

No problem, hope it gets you sorted.