Here is a possible question related to the error described:

What is error M125-Suction nozzles 1&2 have not reached the safe height when the slide is running (PLC2-X0, X1) machine code 56, and how can it be resolved
The solution to the M125-Suction nozzles 1&2 have not reached the safe height error when the slide is running (PLC2-X0, X1) may involve adjusting the nozzle height