@kilop said in Bl touch problem and slow homing speed after upgrade to 3.5.4:
M558 K0 P9 C"^zprobe.in" H5 F120 T6000
when I firstly set this option like that Z ( table in my hevo was going down so i reversed that with ! so then table is moving to BL touch probe.
This isn't how you change the direction of homing. All the ! does is invert the probe reading. I expect the Z moves the other way as it sees the Z probe as triggered. What does the Z-probe reading report in DWC? It should be 0 when not triggered. On BLTouch it will very briefly go to 1000 (usually too fast to be reported by DWC).
See https://docs.duet3d.com/User_manual/Connecting_hardware/Z_probe_testing
As for the Z speed, that's limited by
M203 X8000 Y8000 Z120 ; set maximum speeds (mm/min)It's possible the M558 F parameter overrode this limit in older firmware versions, it doesn't now.
Ian
