I've been asked how many lines an encoder on the spindle should have for LinuxCNC. I have a disk I made with 60 slots and IIRC someone else on this forum uses a gear tooth sensor. So a 400 or 600 line encoder isn't really required but likely there is a point where extra lines don't make any difference. Now with the MESA the encoder edges are counted in hardware so in reality likely the MOTMOD grabs the number every period and uses that for the trajectory planning with respect to power tapping. So here's the question. Are the encoder counts acquired from the MESA hardware done on the BASE PERIOD or SERVO PERIOD? Normally you wouldn't be power tapping at 3000 RPM so at slower speeds higher resolution might be useful but at which point is there a tradeoff? Thanks John
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