I’m around the wires…
When the SPM is enabled, 24v on FG, the spindle starts drifting/vibrating. There is a tiny screw to adjust the rotation, when enabled with no voltage (sw+ sw-). Maybe some MESA voltage offset to adjust this behavior.
If I connect 24v to M19 terminal, led n=0 turns on and led POS turns on also, spindle rotates always to the same angular position and holds with torque, so this is the reference to ATC (later…). If disconnect 24v on M19 the spindle, slowly, continues slowly drifting.
So at the moment I need wiring 2 outputs and 2 inputs from 7i77 (enable, M19, n=0 and POS).
The main issue here (i think) is about the spindle angular/position feedback to 7i77. The spindle encoder (1000 lines TTL) is connected to the SPM. Doesn’t work not connected. Tapping cycle with no kind of feedback?? Or, the +-voltage from 7i77 must be so precise, so fine tuning that assures the correct rpm?
I’ve also measured the voltage on n=ns terminal (it wasn’t used). When the spindle is on high rpm the voltage is low and low rpm the voltage is high. Don’t know if could be used to confirm rpm.
So at the moment my doubts are about the spindle feedback and I’m looking to something kinda terminal/window to see and test the inputs and outputs on 7i77. There is some app to install and see this?
I haven't started messing with the ini and hal files yet
