Haas HL4 Lathe centreline setting

Hi everyone, hopefully someone has come across this procedure before.

Working on a 1997 HL4 lathe.

Turret was bumped and knocked out of align radially. The turret has been realigned and moved onto the adjustment of centreline. The clocked new centreline is now -0.065mm from zero (0.000)

I carried out the following procedure for adjusting the centreline by adjusting the pulse coder figure stored in parameter 254.


clocked the tool holding pocket with a DTi clock (-0.065mm x axis error)
Setting 7 parameter write was enabled
Alarm Page
Typed "DEBUG" and pressed WRITE
Pressed POSITION
Page up to display X axis actual position pulse coder figure
Copied this figure and entered it into Parameter 254.

powered down and referenced out machine.
brought axis down to zero and it is still out of position by 0.065mm.

Tried multiple times, even trying with a figure far away from where it should be and it still has no impact on the position.


Is there something I am not doing correctly with this procedure?


Thanks in advance

Paul

Take the value in the "Target" column for the B axis and write it down.
Now page down on the "Position" page until you find the page "B Param B".
Under "Tool Change Offset" (Parameter 213) there is a value.
Take "Tool Change Offset" value minus "Target" value and enter that new value into parameter 213.
Zero return your B and double check it.

This works for A ( I do it all the time) except you use "Target" value in A and "Tool Change Offset" parameter 212 value on page "A Param B"



I copied this from another post I made, I would imagine it would work for you if you search for corresponding X settings.

I will look into this next time I am near the machine.

Thank you

Be sure the headstock has not also moved.

Stupid question- did you reset the tool offsets for X afterwards? To read the new centerline value? Press F2 I think?

I've had to adjust the centerline on my ST10 with parameter 254.

param254 / old X-offset * new X-offset = new param 254