RogerN wrote: > I'm retrofitting an Anilam lathe with EMC2. My spindle encoder is > connected to a shaft in the gearbox that rotates 1 turn for every 2 > turns of the spindle. The encoder I have is 1000 line, should give 4000 > counts per encoder revolution, 2000 counts per spindle revolution. The > potential problem is that there will only be one index pulse per 2 > spindle revolutions. So I plan to set this up for 2000 counts per > revolution, will EMC2 have a problem if every other index pulse is > missing? It might. The encoder count is supposed to go from zero to the number you specify as the scale for the spindle. Maybe it is no problem, as the count before spindle sync engages is not considered important. Once it syncs, then having it set to 2000 should give the correct lead per turn. So, I guess the only consequence is that it can only sync on every other turn of the spindle. At any reasonable spindle speed, the extra delay should be minimal. I'm trying to think if there is any problem when doing a multi-start thread. I think there shouldn't be.
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