The Zzero circuit is relatively simple.
First, any time you run the ZZero, take a second to test it.
Touch the Z zero clip directly to the plate. While it is touching input 1 should come on.
If it doesn’t come on then something in the ZZero circuit has an issue, such as a wire having come loose or disconnected.
Here are the pertinent zzero connections to check:
Ground clip - The ground clip needs to wire to GND on the main control board - there generally is a green wire for this.
Zero Plate – The plate needs to wire to input 1(1/ZZ) on the main control board - there generally is a black wire for this.
If it does come on then simply clip the clip on the collet nut or bit, then test it by touching the plate to the bit, input 1 should come on. Now run the ZZero
Also, go to Values->Cutter Values and make sure the Safe Z pullup is greater than zero.
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